CN103629094B - Pump installation - Google Patents
Pump installation Download PDFInfo
- Publication number
- CN103629094B CN103629094B CN201210375263.1A CN201210375263A CN103629094B CN 103629094 B CN103629094 B CN 103629094B CN 201210375263 A CN201210375263 A CN 201210375263A CN 103629094 B CN103629094 B CN 103629094B
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- CN
- China
- Prior art keywords
- pump
- dosing pump
- rotating speed
- driving means
- variable speed
- 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.)
- Expired - Fee Related
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- Reciprocating Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
Disclosing a kind of pump installation, preferably as constant-voltage system, have the dosing pump of multiple parallel connection, they are driven by the driving means of a variable speed jointly.Each dosing pump has the service line of subordinate, is respectively provided with a distributing valve in it, can derive the delivered volume stream of the dosing pump of subordinate to groove by it.In one public high pressure line of service line injection pump device.In accordance with the invention it is possible to depend on a respective threshold rotation rate of the driving means of variable speed, switch or run for deactivation or invalid connection or the distributing valve of dosing pump belonging to activate or connect.This is preferably realized by a regulating loop.Thus providing can powered pump installation in its variable speed ground in wide rotating speed band to a great extent.
Description
Technical field
The present invention relates to a kind of pump installation and for the method running it.
Background technology
EP 1 564 414 A1 prospectus represents the pump installation of a kind of subject matter according to claim 1, wherein
The load of individual hydraulic pressure by two dosing pumps coupled to each other and supplied by the driving means of a public variable speed or
Person drives.In the case of less than prespecified load pressure, two pumps are deactivated by distributing valve or invalid connect
Logical, this is connected realization by making their high voltage interface with groove.Hydraulic load is there is in it in the switch of distributing valve by one
The control pipeline of load pressure is carried out, that is this distributing valve relates to a kind of pressure distributing valve.
This pump installation disadvantageously, its for load supply two pressure spaces being oppositely arranged.
Summary of the invention
The task of the present invention is on the other hand, it is provided that a kind of pump installation, and it can be that multiple and different loads supplies
Give and use.
This task by have the feature of claim 1 pump installation and by operation according to claim 9 or 10 it
Method solve.
The pump installation of the present invention has the dosing pump of multiple parallel connection, and they are driven by the driving means of a variable speed jointly
Dynamic.Each dosing pump has the service line of subordinate, is respectively provided with a distributing valve in it, can be derived to liquid bath by it
The delivered volume stream of the dosing pump of subordinate.Service line connects a public high voltage interface or the injection pump device of pump installation
The public high pressure line of bar in.In accordance with the invention it is possible to depend on the threshold rotation rate of the driving means of variable speed, switch or
Person's operation is used for the distributing valve deactivated or the dosing pump belonging to activation or connection is connected or be used for effect especially.Thus carry
Supply to be the pump installations that multiple different load supplies with high motility.
The most favourable structure of the present invention illustrates in the dependent claims.
Particularly preferably pump installation is constant-voltage system, driving means different of variable speed in its high pressure line
It also is able to produce and keep constant operating pressure under rotating speed.This uses regulating loop to realize, and it has pressure transducer, logical
Cross this pressure transducer and can determine the load pressure in public high pressure line.Can be switched with it even by this regulating loop
The distributing valve connect.It is possible to by this pump installation with constant power or torque and bearing with variable speed operation hydraulic pressure
Carry.
The preferably driving means of variable speed is motor, and wherein, the rotating speed of motor can be by converter by regulating back
Road adjusts.
This part thing can provide a rotating speed to pass in operation with closed ring (the regulation circuit of Guan Bi) on motor
Sensor, it is connected with regulation circuit.
Or the modification according to a low cost can in open loop operation (the regulation circuit of unlatching) in converter structure
Build equivalent circuit or rotating speed model.
Preferably dosing pump uses bonder each other and/or to couple with the driving means of variable speed by axle.So energy
The single dosing pump of enough complete static regulations is also.
When dosing pump has different specified delivered volume, produce the different combinatory possibility of dosing pump so that energy
Enough there is the rotating speed band limiting driving means further.Here can design the dosing pump with minimum specified delivered volume for
The zero stroke of load runs and/or remains on to compensate the pump installation of the present invention or whereby the supply of load for pressure
Leakage.
When distributing valve is connected with liquid Cao by a public liquid bath pipeline returning guiding, can be at this liquid bath pipeline
Cooler and/or filter are inside set.
A kind of preferred extension at the pump installation of the present invention connects pressure reservoir on public high pressure line.
Here particularly preferably an adjustable throttling one-way valve is set between pressure reservoir and high pressure line.
It can be with pressure reservoir together as damping element effect.
The present invention is used for raising according in the public high pressure line of the pump installation one of the claims Suo Shu
The method of volume flow there is step:
The rotating speed of-special the driving means improving variable speed constantly；
-activate by-the most adjustable-threshold rotation rate or connect one of them by belonging to the distributing valve of dosing pump
Dosing pump；With
The rotating speed of-special the driving means improving variable speed constantly.
Being achieved in a kind of method for running pump installation, the driving means of its variable speed to a great extent can
Enough operations on wide rotating speed band.
In the step of middle " activating or connect one of them dosing pump " can-the most jumpily-reduce rotating speed
The rotating speed of variable device.It is possible to compensate the volume flow of the rising of saltatory in theory in high pressure line.
Correspondingly, the present invention for reduce at the public high pressure according to the pump installation one of the claims Suo Shu
The method of the volume flow in pipeline has a step:
The rotating speed of-special the driving means reducing variable speed constantly；
-deactivate or invalid connection by-the most adjustable-threshold rotation rate by belonging to the distributing valve of dosing pump
One of them dosing pump；With
The rotating speed of-special the driving means reducing variable speed constantly.
Being achieved in a kind of method for running pump installation, the driving means of its variable speed to a great extent can
Enough operations on wide rotating speed band.
In the step of middle " deactivation or one of them dosing pump of invalid connection " can-the most jumpily-
Improve the rotating speed of the device of variable speed.It is possible to compensate the volume flow of the reduction of saltatory in theory in high pressure line.
In two kinds of methods particularly preferably, activate when higher threshold rotation rate (such as 1500 revs/min) or connect it
In dosing pump and the deactivation when relatively low threshold rotation rate (such as 500 revs/min) or invalid connect identical quantitative
Pump.Thus produce and there is wide delayed rotating speed band.
Accompanying drawing explanation
One embodiment of the present of invention is described in detail below according to accompanying drawing.In accompanying drawing:
Fig. 1 represents the embodiment of the pump installation of the present invention in the case of the maximum volume stream demand of load,
Fig. 2 represents the embodiment according to Fig. 1 in zero stroke runs or pressure remains on.
Detailed description of the invention
Fig. 1 represents the present invention's in the case of the maximum volume stream demand of a load 1 connected on pump installation
One embodiment of pump installation, it constructs as constant-voltage system.This pump installation has three dosing pump P1, P2, P3 in parallel.They
Open loop is arranged, and is respectively provided with service line 2,4,6.Service line 2,4,6 injects a public high-voltage tube
In line 8, give load 1 supply pump pressure by it.
Three dosing pumps can have different specified delivered volume, according to distinguish below this option big dosing pump P3,
Middle dosing pump P2 and little dosing pump P1.Little dosing pump P1 is that zero stroke runs or pressure keeps driving design.
Distributing valve 10,12,14 it is respectively provided with in service line 2,4,6.Each distributing valve 10,12,14 is as 3/2 valve
Structure, and there are two position of the switch, wherein by the position of the switch each dosing pump P1, P2, the P3 represented in FIG and high pressure
Pipeline 8 thus 1 be connected with load.Dosing pump P1, P2, the P3 relevant in each second switch position of distributing valve 10,12,14 pass through
Respective ballast line 16,18,20 unloads to liquid bath T.A public connection pipeline is injected for this ballast line 16,18,20
In 21, the latter injects in liquid bath pipeline 22.Load 1 is connected by liquid bath pipeline 22 with liquid bath T.
Arranging a check valve 24 by spring pretension within connecting pipeline 21, its opening direction is from ballast line
16,18,20 towards liquid bath pipeline 22 thus it is orientated towards liquid bath T.
Arrange one in a section of the liquid bath pipeline 22 arranged between load 1 and the decanting point connecting pipeline 21 and pass through bullet
The check valve 26 of spring pretension, its opening direction is orientated towards liquid bath T from load 1.
In a section of the liquid bath pipeline 22 arranged between decanting point and the liquid bath T connecting pipeline 21, a filter is set
28 and a cooler 30.By them, not only from the pressure medium of load 1 backflow but also pass through theirs from pump P1, P2, P3
The pressure medium that ballast line 16,18,20 refluxes towards liquid bath T is all filtered and is cooled down.
Connecting a pressure transducer 34 by control pipeline 32 on high pressure line 8, it is connected to by holding wire 36
The pump installation control unit 38 of the present invention.Each distributing valve 10,12,14 passes through a conductor wire 54,56,58 by control unit
38 run or switch.In addition control unit 38 is by the rotating speed of (end represents in detail) converter regulation motor 40,
The latter is connected with big proportional valve P3 by drive shaft 42.Big proportional valve P3 is coupled with middle proportional valve P2 by connecting shaft 44, and it
Coupled with little proportional valve P1 by connecting shaft 46.One coupling device 48,50,52 of each offer in axle 42,44,46, by it
Can be separated from each other or decoupled equipment 40, P1, P2, P3.
These dosing pumps connect without going through coupling device, and they can also be connected to each other directly and constitute multistage pump.
High pressure line 8 connects pressure reservoir 62 by throttling one-way valve 60.Pressure reservoir 62 can by than
Bigger unlatching is transversal towards high pressure line 8 thus to loading 1 output pressure medium, and makees during stuffing pressure memorizer 62
Unlatching cross section is less and scalable.
When loading 1 needs maximum volume flow, distributing valve 10,12,14 is connect by control unit 38 and to represent in FIG
The position of the switch so that the delivered volume stream of all three dosing pump P1, P2, P3 is transported to load by public high pressure line 8
1。
Fig. 2 represents the embodiment of the pump installation of the present invention in zero stroke runs or pressure remains on according to Fig. 1.
Here two distributing valves 12,14 with big dosing pump P2, P3 are so changed by control unit 38 so that the conveying of each of which
Volume flow thus transports towards liquid bath pipeline 22 towards liquid bath T by respective ballast line 18,20 with by connecting pipeline 21.
In a kind of special design of above-described embodiment, motor 40 can be with 3000 under the running status shown in Fig. 1
Rev/min rotating speed drive all of dosing pump P1, P2, P3, and rotating speed is 200 revs/min under the running status shown in Fig. 2.?
The (not shown) method of operation below between two kinds of running statuses that Fig. 1 and 2 represents is possible.
-big dosing pump P3 and middle dosing pump P2 is to load 1 conveying；
-big dosing pump P3 and little dosing pump P1 is to load 1 conveying；
-middle dosing pump P2 and little dosing pump P1 is to load 1 conveying；
-the biggest dosing pump P3 is to load 1 conveying；With
-only middle dosing pump P2 is to load 1 conveying.
The most public delivered volume stream thus relatively " wide " can change towards load 1 in high pressure line 8.
Second embodiment of the pump installation of the present invention is described below: 10ccm pump is in order to the constant voltage at 100 bars in zero stroke
Under with 2 liters/min keep load 1 leakages balance.Here the rotating speed of motor 40 is about 200 revs/min.By 10ccm pump and
Require when the demand of " 100 bar constant voltage " does not consider efficiency that motor 40 has the torque of 15.9Nm.
In the case of load 1 is required the maximum volume stream of 90 liters/min, further will be from such as 1500 revs/min for this
Rotating speed rise conversion 20ccm pump.Therefore the volume flow of 45 liters/min is carried when the rotating speed of 1500 revs/min.Motor 40 accelerates directly
To 3000 revs/min thus reach the volume flow of required 90 liters/min.To 1500 revs/min of torques requiring motor 40 it is
15.9Nm, therefore this can accelerate very fast.After by during at 1500 revs/min, 20ccm pump connected by changing-over distributing valve, it is desirable to
The torque of motor 40 is 47.7Nm.Switching wave is rotating speed, and it is from converter, and the latter has motor
The currently practical rotating speed of 40.Motor 40 continues to accelerate until 3000 revs/min as far as possible in overload region.Use motor 40 He
This overload of converter is possible.
As long as in deferring procedure, two constant pressure valve P1 and P2 activate just conveying in systems, until again reaching a threshold
Value rotating speed.This threshold rotation rate needs not to be connects the identical rotating speed of process (how significantly less than such as 500 revs/min) with for distributing valve.
Participating in deferring procedure by two constant pressure valve P1 and P2, produce a higher countertorque on motor 40, therefore its ratio is worked as
Slowed down quickly during only one dosing pump performance countertorque.
Disclosing a kind of pump installation, preferably as constant-voltage system, have the dosing pump of multiple parallel connection, they are jointly by one
Variable speed driving dress Mus drive.Each dosing pump has the service line of subordinate, is respectively provided with a distribution in it
Valve, can derive the delivered volume stream of the dosing pump of subordinate by it to liquid bath.One of service line injection pump device public
High pressure line in.In accordance with the invention it is possible to depend on the corresponding threshold rotation rate of the driving means of variable speed, switch or
Operation distributing valve is for deactivation or invalid connection or is used for the dosing pump belonging to activation or connection.This preferably passes through
One regulating loop realizes.Thus provide can pump installation, transport in wide rotating speed band to a great extent its variable speed
OK.
Reference numerals list
1 load
2,4,6 service line
8 high pressure lines
10,12,14 distributing valve
16,18,20 ballast line
21 connect pipeline
22 liquid bath pipelines
24,26 check valve
28 filters
30 coolers
32 control pipeline
34 pressure transducers
36 holding wires
38 control units
40 motor
42 drive shafts
44,46 connecting shaft
48,50,52 bonder
54,56,58 conductor wire
60 throttling one-way valves
62 pressure reservoir
The little constant pressure valve of P1
Constant pressure valve in P2
The big constant pressure valve of P3
T liquid bath
Claims (10)
1. having the pump installation of multiple dosing pump (P1, P2, P3), they are driven by the driving means (40) of a variable speed jointly
Dynamic, each of which dosing pump (P1, P2, P3) has service line (2,4,6), be respectively provided with in it distributing valve (10,12,
14), the delivered volume stream of the dosing pump (P1, P2, P3) of subordinate, wherein wall scroll can be derived to liquid bath (T) by this distributing valve
Service line (2,4,6) is connected on public high voltage interface or injects in public high pressure line (8), it is characterised in that
Threshold rotation rate conversion distributing valve (10,12,14) of the driving means (40) of variable speed can be depended on, wherein, at high-voltage tube
Constant operating pressure, wherein pump installation tool can be produced during the different rotating speed of the driving means of the inherent variable speed of line (8)
Having regulating loop (34,38), the latter has pressure transducer (34), by it may determine that load pressure in high pressure line (8)
Power, wherein, can change distributing valve (10,12,14) by regulating loop (34,38).
Pump installation the most according to claim 1, wherein, the driving means of variable speed is motor (40), itself and regulation
Loop (34,38) connects, and the rotating speed of motor (40) can be adjusted by regulating loop (34,38) by converter.
Pump installation the most according to claim 1, wherein, dosing pump (P1, P2, P3) uses coupling by axle (42,44,46)
Device (48,50,52) can each other or couple with the driving means (40) of variable speed.
Pump installation the most according to claim 1, wherein, dosing pump (P1, P2, P3) has different specified delivered volume.
Pump installation the most according to claim 1, wherein, distributing valve (10,12,14) by public liquid bath pipeline (22) with
Liquid bath (T) connects, and arranges cooler (30) or filter (28) in liquid bath pipeline (22).
Pump installation the most according to claim 1, wherein, connects pressure reservoir (62) on high pressure line (8).
Pump installation the most according to claim 6, arranges adjustable between pressure reservoir (62) and high pressure line (8)
Throttling one-way valve (60).
8. for improving the side of the volume flow in the high pressure line (8) according to the pump installation one of the claims Suo Shu
Method, has a step:
The rotating speed of the driving means (40) of-raising variable speed；
-activate by threshold rotation rate or connect wherein by belonging to the distributing valve (10,12,14) of dosing pump (P1, P2, P3)
One dosing pump (P1, P2, P3)；With
The rotating speed of the driving means (40) of-raising variable speed.
9. for reducing the side of the volume flow in the high pressure line (8) according to the pump installation one of claim 1 to 7 Suo Shu
Method, has a step:
The rotating speed of the driving means (40) of-reduction variable speed；
-deactivate or invalid by threshold rotation rate by belonging to the distributing valve (10,12,14) of dosing pump (P1, P2, P3)
Connect one of them dosing pump (P1, P2, P3)；With
The rotating speed of the driving means (40) of-reduction variable speed.
10. according to the method described in claim 9 or 8, wherein, activate when first threshold rotating speed or connect one of them calmly
Amount pump (P1, P2, P3) and the deactivation when Second Threshold rotating speed or invalid connect identical dosing pump (P1, P2, P3), its
Middle first threshold rotating speed is more than Second Threshold rotating speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210375263.1A CN103629094B (en) | 2012-08-24 | 2012-08-24 | Pump installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210375263.1A CN103629094B (en) | 2012-08-24 | 2012-08-24 | Pump installation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103629094A CN103629094A (en) | 2014-03-12 |
| CN103629094B true CN103629094B (en) | 2016-12-21 |
Family
ID=50210473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210375263.1A Expired - Fee Related CN103629094B (en) | 2012-08-24 | 2012-08-24 | Pump installation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103629094B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2503227B2 (en) * | 1987-04-06 | 1996-06-05 | 日産自動車株式会社 | Hydraulic supply system for vehicles |
| DE3727633A1 (en) * | 1987-08-19 | 1989-03-02 | Manfred Rattunde | Cone pulley transmission with controlled quantity of pressure medium |
| DE19930562A1 (en) * | 1999-07-02 | 2001-01-04 | Still Gmbh | Hydraulic system for an industrial truck |
| JP4218261B2 (en) * | 2002-06-11 | 2009-02-04 | ダイキン工業株式会社 | Pumping unit |
| DE102009025707B4 (en) * | 2009-06-20 | 2021-06-02 | Robert Bosch Gmbh | Device for controlling a system with hydraulic circuits |
-
2012
- 2012-08-24 CN CN201210375263.1A patent/CN103629094B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN103629094A (en) | 2014-03-12 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161221 |
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| CF01 | Termination of patent right due to non-payment of annual fee |