CN108317076A - Axial plunger pump with self-checking function - Google Patents
Axial plunger pump with self-checking function Download PDFInfo
- Publication number
- CN108317076A CN108317076A CN201810296224.XA CN201810296224A CN108317076A CN 108317076 A CN108317076 A CN 108317076A CN 201810296224 A CN201810296224 A CN 201810296224A CN 108317076 A CN108317076 A CN 108317076A
- Authority
- CN
- China
- Prior art keywords
- shell
- end cap
- sensing unit
- plunger pump
- exploration hole
- 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.)
- Pending
Links
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
- F04B51/00—Testing machines, pumps, or pumping installations
-
- 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
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/122—Details or component parts, e.g. valves, sealings or lubrication means
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- 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
Abstract
This application involves a kind of axial plunger pumps with self-checking function, including shell, end cap, and cylinder body, plunger rod, transmission shaft and the swash plate of installation inside housings；Swash plate is close to one end of shell；The other end of the cylinder body close to shell；End cap is fixed on the other end of shell, and the inside of shell is closed；Axial plunger pump further includes thrust button and valve plate, and the two is arranged between cylinder body and end cap；It is provided with the first exploration hole in an axial direction on end cap and valve plate, the first sensing unit is provided in the first exploration hole；It is provided with the second exploration hole radially on the side wall of shell, the second sensing unit is provided in the second exploration hole.The application is detected abrasion condition using sensing unit, situations such as capable of monitoring chronic abrasion, particulate matter Fast Wearing, water shortage Fast Wearing simultaneously；Pump inner core element such as cylinder body, plunger, thrust button etc. are not changed, are easy to reequip the product produced.
Description
Technical field
This application involves fluid machinery technical fields, and in particular to a kind of axial plunger pump with self-checking function.
Background technology
Axial plunger pump is widely used in sea water desalination, rubbish due to having the characteristics that self-lubricating, pressure is high, efficiency is excellent
The water treatment fields such as percolate processing and zero discharge of industrial waste water, provide pressure environment, ingredient for nanofiltration and counter-infiltration system
Complicated concentrated water is processed into clean water.Axial plunger pump is a kind of volumetric water pump, by the past of the plunger for being against swash surfaces
Multiple movement carrys out pumped (conveying) medium and thus establishes hyperbaric environment.Since its pumped (conveying) medium is water, lubricity is poor, and is difficult to completely
Fine impurity is avoided, so the friction pair in axial plunger pump is easy to happen chronic abrasion.In actual moving process, if gone out
There is the case where large granular impurity enters in existing water shortage, and the secondary abrasion that rubs can be accelerated.The above abrasion can all cause complete machine to fail,
The loss of time, operation loss and economic loss are brought to user.
There are a series of friction pairs in axial plunger pump, such as：Piston shoes and swash plate, piston shoes and chuck, chuck and backhaul
Ball, thrust button and valve plate, etc..These friction pairs provide sealing and support under the lubrication of aqueous medium for axial plunger pump.It rubs
It wipes secondary generally using metal with plastics.The flatnesses of these surface of friction pair, profile tolerance and roughness requirements are all very high, work
When the degree of filtration of medium is required it is also very high.But since the lubricity of water is poor, even if the above high request all meets,
After long-play, the secondary chronic abrasion that rubs can still result in complete machine failure so that water treatment system can not work normally.Such as
There are frequent start-stop processes, this chronic abrasion to accelerate in fruit operating mode.Once encountering fore filter failure or being
Water shortage of uniting causes axial plunger pump to break down then these friction pairs can be worn rapidly.
In the related technology, for chronic abrasion the case where, mainly periodically tears machine check state of wear open.Filter is lost
The case where effect (especially partial failure), there are currently no ripe methods to monitor on-line.The case where being run for water shortage, it is existing
Some methods are mainly to monitor the pressure of water inlet to shut down to alarm.
Invention content
To overcome the problems, such as at least to a certain extent present in the relevant technologies, the application provides a kind of with self-test measurement of power
The axial plunger pump of energy.
According to an embodiment of the present application, a kind of axial plunger pump with self-checking function, including shell, end cap are provided,
And the cylinder body mounted on the enclosure interior, plunger rod, transmission shaft and swash plate；
The swash plate is close to one end of the shell；The other end of the cylinder body close to the shell；The end cap is fixed
On the other end of the shell, the inside of the shell is closed；
The axial plunger pump further includes thrust button and valve plate, the two be arranged at the cylinder body and the end cap it
Between；The thrust button is close to the cylinder body；The valve plate is close to the end cap；
It is provided with the first exploration hole in an axial direction on the end cap and the valve plate, is provided in first exploration hole
First sensing unit；
It is provided with the second exploration hole radially on the side wall of the shell, the second biography is provided in second exploration hole
Feel unit.
Further, the thrust button, the valve plate and the end cap are bonded successively；
First exploration hole inwardly sequentially passes through the end cap and the valve plate from the outside of the end cap, reaches institute
Near the contact surface for stating thrust button and the valve plate.
Further, one end of first sensing unit is inserted into from the outside of the end cap in first exploration hole,
Near the contact surface for reaching the thrust button and the valve plate；
The other end of first sensing unit stays on the lateral surface of the end cap；First sensing unit it is another
Draw signal transmission cable in end.
Further, on the thrust button at position corresponding with first exploration hole it is an annular step surface.
Further, second exploration hole extends internally from the lateral surface of the shell reaches the inside of the shell.
Further, second exploration hole is arranged connects close to one end of the swash plate with the shell in the cylinder body
Tactile position.
Further, second exploration hole is inserted into one end of second sensing unit from the lateral surface of the shell
In, reach the medial surface of the shell；
The other end of second sensing unit stays on the lateral surface of the shell；Second sensing unit it is another
Draw signal transmission cable in end.
Further, first sensing unit and second sensing unit are all made of the position with bolt appearance and open
Pass or displacement sensor；
The screw rod end of bolt is inserted into first exploration hole or second exploration hole；Signal transmission cable is from bolt
Nut end draw.
Further, first exploration hole and second exploration hole are threaded hole.
Further, it is provided with seal groove on the nut lower face of the bolt, is provided in the seal groove close
Seal is used for waterproof sealing.
The technical solution that embodiments herein provides can include the following benefits：
The abrasion condition of plunger pump is detected using sensing unit, it is fast that chronic abrasion, particulate matter can be monitored simultaneously
Situations such as speed abrasion, water shortage Fast Wearing, can prompt system open and inspect and trigger emergency shutdown, can avoid for user or
Reduce the loss of time, operation loss and economic loss.
The scheme of the application is also small to the change of axial plunger pump, to pumping inner core element such as cylinder body, plunger rod, thrust button
Deng not changing, it is easy to reequip the product produced, axial plunger pump is worked normally also without any shadow
It rings.
It should be understood that above general description and following detailed description is only exemplary and explanatory, not
The application can be limited.
Description of the drawings
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the application
Example, and the principle together with specification for explaining the application.
Fig. 1 is a kind of structure chart of axial plunger pump with self-checking function shown according to an exemplary embodiment.
In figure：1- cylinder bodies；2- plunger rods；3- springs；4- transmission shafts；5- backhaul balls；6- chucks；7- piston shoes；8- swash plates；9-
Spring block；10- thrust buttons；11- valve plates；12- end caps；13- shells；14- sensing units；15- sealing rings；
The first sensing units of 1401-；The second sensing units of 1402-.
Specific implementation mode
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the application.On the contrary, they be only with it is such as appended
The example of consistent device and method of some aspects be described in detail in claims, the application.
Fig. 1 is a kind of structure chart of axial plunger pump with self-checking function shown according to an exemplary embodiment,
It includes shell 13, end cap 12, and cylinder body 1, plunger rod 2, transmission shaft 4 and swash plate 8 inside the shell 13.
The swash plate 8 is close to one end of the shell 13；The other end of the cylinder body 1 close to the shell 13；The end
Lid 12 is fixed on the other end of the shell 13, and the inside of the shell 13 is closed.
The transmission shaft 4 is stretched into from one end of the shell 13, is passed through the swash plate 8 and is entered the cylinder body 1, the biography
Moving axis 4 is connected through a screw thread with the cylinder body 1；The swash plate 8 maintains static dynamic, and the transmission shaft 4 can drive the cylinder body 1
Rotation.
Plunger hole in an axial direction is provided on the cylinder body 1, the plunger rod 2 is inserted into the plunger hole.
The axial plunger pump further includes thrust button 10 and valve plate 11, the two be arranged at the cylinder body 1 with it is described
Between end cap 12；The thrust button 10 is close to the cylinder body 1；The valve plate 11 is close to the end cap 12.
For this patent is described in further detail, expansion explanation is carried out in conjunction with the operation principle of axial plunger pump.
Such as Fig. 1, at work, cylinder body 1 rotates a circle axial plunger pump, and plunger rod 2 can be in the plunger hole of cylinder body 1
Middle disengaging, to realize extraction and the force feed of medium.There are one springs 3 in the hole of 1 central area of cylinder body, it is in compression shape
State.The elastic force of spring 3 is propagated along axis to both direction.The direction of propagation one：Backhaul ball 5 is transmitted to by cylinder body 1 and transmission shaft 4, by
Backhaul ball 5 is transmitted to chuck 6, and plunger piston slippery boots 7 are transmitted to by chuck 6, and plunger piston slippery boots 7 are finally pressed to 8 surface of swash plate.In this power
Part on the direction of propagation, when pump work, swash plate 8 is static, and other parts are movements.The direction of propagation two：By
Spring block 9 is transmitted to thrust button 10, is transmitted to valve plate 11 by thrust button 10, valve plate 11 is finally pressed to Inlet and outlet water end cap 12
On.Part on the direction of propagation of this power, when pump work, valve plate 11 and Inlet and outlet water end cap 12 be it is static,
Other parts are movements.
The axial abrasion of axial plunger pump is primarily present in following several secondary to friction：Thrust button 10 and valve plate 11, backhaul
Ball 5 and chuck 6, chuck 6 and plunger piston slippery boots 7, plunger piston slippery boots 7 and swash plate 8.Wherein, the abrasion hair of thrust button 10 and valve plate 11
Life is happened at the other side of spring 3 in the side of spring 3, others abrasion.Occur when between thrust button 10 and valve plate 11
When abrasion, thrust button 10 can be moved along axis to 11 direction of valve plate.When other friction pair is worn,
Cylinder body 1 can be moved along axis to 8 direction of swash plate.
Based on two above along the wear direction of axis, position switches or displacement sensor can come on the pump housing
Inner body is monitored, such as the displacement of cylinder body 1 and thrust button 10 in the axial direction.Abrasion is represented when displacement reaches certain position
Reach a certain degree, position switch or displacement sensor send out corresponding signal to control unit, and control unit is then according in advance
Setting come send out maintenance standby signal or start emergency stopping procedures.
As shown in Figure 1, the first exploration hole in an axial direction is provided on the end cap 12 and the valve plate 11, described first
The first sensing unit 1401 is provided in exploration hole.
It is provided with the second exploration hole radially on the side wall of the shell 13, second is provided in second exploration hole
Sensing unit 1402.
Further, the thrust button 10, the valve plate 11 and the end cap 12 are bonded successively.First exploration hole
Inwardly sequentially pass through the end cap 12 and the valve plate 11 from the outside of the end cap 12, reach the thrust button 10 with it is described
Near the contact surface of valve plate 11.
Further, first detection is inserted into one end of first sensing unit 1401 from the outside of the end cap 12
Kong Zhong, near the contact surface for reaching the thrust button 10 and the valve plate 11.The other end of first sensing unit 1401
It stays on the lateral surface of the end cap 12；The other end of first sensing unit 1401 draws signal transmission cable.
Further, on the thrust button 10 at position corresponding with first exploration hole it is an annular step surface.
Since sensing unit 14 has certain detecting distance, so one end of the first sensing unit 1401 can be with thrust
Disk 10 and the contact surface of valve plate 11 have certain distance, do not need to reach contact surface.For example, it is assumed that the step of thrust button 10 is high
Degree is 1.0mm, and the step height of valve plate 11 is 1.0mm, and the distance of reaction of the first sensing unit 1401 is 0.8mm.If it is desired to
It allows, when the distance between the bench floor of thrust button 10 and the bench floor of valve plate 11 become 0.5mm from 2.0mm, is
System sends out alarm, then the distance of bench floor of the bottom end of the first sensing unit 1401 apart from valve plate 11 should be 0.5-0.8
=-0.3mm, i.e., under the bench floor of valve plate 11 at 0.3mm.
Further, second exploration hole extends internally from the lateral surface of the shell 13 and reaches in the shell 13
Portion.
Further, second exploration hole is arranged in the cylinder body 1 close to one end of the swash plate 8 and the shell 13
Near the position being in contact.
Further, one end of second sensing unit 1402 is inserted into described second from the lateral surface of the shell 13 and is visited
In gaging hole, near the medial surface that reaches the shell 13.The other end of second sensing unit 1402 stays in the shell 13
Lateral surface on；The other end of second sensing unit 1402 draws signal transmission cable.
It should be noted that sensing unit 14 is not limited to be mounted on shell 13 and Inlet and outlet water end cap 12, their installation
Only need the demand for meeting axial displacement of the monitoring axial plunger pump internal element caused by abrasion.
Further, first sensing unit 1401 and second sensing unit 1402 are all made of with bolt appearance
Position switch or displacement sensor.The screw rod end of bolt is inserted into first exploration hole or second exploration hole；
Signal transmission cable is drawn from the nut end of bolt.
Further, first exploration hole and second exploration hole are threaded hole.
Further, it is provided with seal groove on the nut lower face of the bolt, is provided in the seal groove close
Seal 15 is used for waterproof sealing.
The concrete methods of realizing of the application is described further with reference to specific embodiment.
As shown in Figure 1, the suitable position on Inlet and outlet water end cap 12 and shell 13 beats threaded hole, it will be with bolt appearance
Sensing unit 14 (including the first sensing unit 1401 and second sensing unit 1402) screws in threaded hole.First sensing unit
The displacement of 1401 monitoring thrust buttons 10 in the axial direction, the second sensing unit 1402 monitor the displacement of cylinder body 1 in the axial direction.
Position switch or displacement sensor may be used in sensing unit 14, they can use and be threadedly coupled, dismounting
With it is easy to maintain.Wherein, displacement sensor has higher monitoring precision relative to position switch, sets alarm parameters also more
Flexibly；Displacement sensor can the real-time continuous reading degree of wear, more meticulously understand axial plunger pump working condition.
Sensing unit 14 is fixed by screw thread on outer package and nut end face.There is seal groove on nut end face,
It is sealed from there through sealing ring 15.
Sensing unit 14 is resistant to certain pressure (being more than 5bar) and corrosion-resistant, reliability height, suitable long-play.
Sensing unit 14 transmitted a signal to by waterproof shield cable water treatment system control unit (such as PLC) or
The other independent electronic control unit of person, such as compact battery powered low-power scm system being installed together.
When thrust button 10, valve plate 11 may wear to a certain degree, thrust button 10 can be to the side of Inlet and outlet water end cap 12
To being moved to corresponding position.When thrust button 10 is moved to the first 1401 preset alert locations of sensing unit, first passes
Sense unit 1401 can send out alarm signal and be transferred to control unit.
When plunger piston slippery boots 7, chuck 6 or backhaul ball 5 may wear to a certain degree, cylinder body 1 can be moved to 8 direction of swash plate
It moves to corresponding position.When cylinder body 1 is moved to the second 1402 preset alert locations of sensing unit, the second sensing unit
1402, which can send out alarm signal, is transferred to control unit.
The axial plunger pump of the application can coordinate control unit (such as Programmable logical controller of water treatment system itself
Device, i.e. PLC, Programmable Logic Controller), to realize system-level monitoring and trigger shutdown；It can also coordinate
Other electronic control unit, such as compact battery powered low-power scm system being installed together, to realize independent warning function.This
The scheme electrical connection of application is simple, and big change need not be done to water treatment system.
After control unit obtains alarm signal, machine can be kept to continue to run with and be simultaneously emitted by the signal that prompt is opened and inspect,
The direct emergency shutdown of machine can be controlled.Both the above control mode can be according to the mill representated by 14 alert locations of sensing unit
Damage degree is configured.
The axial plunger pump of the application can monitor the state of wear of itself on-line, and send out early warning signal
Or directly control emergency shutdown；Early warning is made to complete machine failure, user is helped to be monitored the operating status of plunger pump.It is sending out
Go out alarm, after the machine of tearing open is detected, continues to run with but pay close attention to according to actual conditions removable parts part, or selection
It waits for accessory, thus can reduce or even eliminate every loss of user.
It is understood that same or similar part can mutually refer in the various embodiments described above, in some embodiments
Unspecified content may refer to same or analogous content in other embodiment.
It should be noted that in the description of the present application, term " first ", " second " etc. are used for description purposes only, without
It can be interpreted as indicating or implying relative importance.In addition, in the description of the present application, unless otherwise indicated, the meaning of " multiple "
Refer at least two.
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 contained at least one embodiment or example of the application.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 embodiments or example in can be combined in any suitable manner.
Although embodiments herein has been shown and described above, it is to be understood that above-described embodiment is example
Property, it should not be understood as the limitation to the application, those skilled in the art within the scope of application can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (10)
1. a kind of axial plunger pump with self-checking function, including shell, end cap, and the cylinder mounted on the enclosure interior
Body, plunger rod, transmission shaft and swash plate；
The swash plate is close to one end of the shell；The other end of the cylinder body close to the shell；The end cap is fixed on institute
It states on the other end of shell, the inside of the shell is closed；
It is characterized in that：Further include thrust button and valve plate, the two is arranged between the cylinder body and the end cap；It is described to stop
Push-plate is close to the cylinder body；The valve plate is close to the end cap；
It is provided with the first exploration hole in an axial direction on the end cap and the valve plate, first is provided in first exploration hole
Sensing unit；
It is provided with the second exploration hole radially on the side wall of the shell, the second sensing list is provided in second exploration hole
Member.
2. a kind of axial plunger pump with self-checking function according to claim 1, it is characterised in that：The thrust
Disk, the valve plate and the end cap are bonded successively；
First exploration hole inwardly sequentially passes through the end cap and the valve plate from the outside of the end cap, reaches described stop
Near the contact surface of push-plate and the valve plate.
3. a kind of axial plunger pump with self-checking function according to claim 2, it is characterised in that：Described first passes
The one end for feeling unit is inserted into from the outside of the end cap in first exploration hole, and the thrust button and the valve plate are reached
Near contact surface；
The other end of first sensing unit stays on the lateral surface of the end cap；The other end of first sensing unit draws
Go out signal transmission cable.
4. a kind of axial plunger pump with self-checking function according to claim 2, it is characterised in that：The thrust button
It is an annular step surface at upper position corresponding with first exploration hole.
5. a kind of axial plunger pump with self-checking function according to claim 1, it is characterised in that：Described second visits
Gaging hole extends internally from the lateral surface of the shell reaches the inside of the shell.
6. a kind of axial plunger pump with self-checking function according to claim 5, it is characterised in that：Described second visits
Gaging hole is arranged in the position that the cylinder body is in contact close to one end of the swash plate with the shell.
7. a kind of axial plunger pump with self-checking function according to claim 5, it is characterised in that：Described second passes
The one end for feeling unit is inserted into from the lateral surface of the shell in second exploration hole, and the medial surface of the shell is reached；
The other end of second sensing unit stays on the lateral surface of the shell；The other end of second sensing unit draws
Go out signal transmission cable.
8. a kind of axial plunger pump with self-checking function according to any one of claims 1 to 7, it is characterised in that：
First sensing unit and second sensing unit are all made of position switch or displacement sensor with bolt appearance；
The screw rod end of bolt is inserted into first exploration hole or second exploration hole；Spiral shell of the signal transmission cable from bolt
Female end is drawn.
9. a kind of axial plunger pump with self-checking function according to claim 8, it is characterised in that：Described first visits
Gaging hole and second exploration hole are threaded hole.
10. a kind of axial plunger pump with self-checking function according to claim 8, it is characterised in that：The bolt
Nut lower face on be provided with seal groove, sealing ring is provided in the seal groove for waterproof sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810296224.XA CN108317076A (en) | 2018-04-02 | 2018-04-02 | Axial plunger pump with self-checking function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810296224.XA CN108317076A (en) | 2018-04-02 | 2018-04-02 | Axial plunger pump with self-checking function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108317076A true CN108317076A (en) | 2018-07-24 |
Family
ID=62897366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810296224.XA Pending CN108317076A (en) | 2018-04-02 | 2018-04-02 | Axial plunger pump with self-checking function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108317076A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439800A (en) * | 2019-07-26 | 2019-11-12 | 北京精密机电控制设备研究所 | A kind of variable pump swash plate control moment measuring device |
| CN113417867A (en) * | 2021-06-21 | 2021-09-21 | 中南大学 | Embedded slurry pump guard plate abrasion on-line monitoring system |
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| CN2654897Y (en) * | 2003-11-06 | 2004-11-10 | 浙江大学 | Low friction wear pure water hydraulic axial plunger pump/motor |
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| CN2654897Y (en) * | 2003-11-06 | 2004-11-10 | 浙江大学 | Low friction wear pure water hydraulic axial plunger pump/motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439800A (en) * | 2019-07-26 | 2019-11-12 | 北京精密机电控制设备研究所 | A kind of variable pump swash plate control moment measuring device |
| CN113417867A (en) * | 2021-06-21 | 2021-09-21 | 中南大学 | Embedded slurry pump guard plate abrasion on-line monitoring system |
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