CN103114989A - Follow-up sensitive pump for energy-saving hydraulic pump station - Google Patents
Follow-up sensitive pump for energy-saving hydraulic pump station Download PDFInfo
- Publication number
- CN103114989A CN103114989A CN2013100314381A CN201310031438A CN103114989A CN 103114989 A CN103114989 A CN 103114989A CN 2013100314381 A CN2013100314381 A CN 2013100314381A CN 201310031438 A CN201310031438 A CN 201310031438A CN 103114989 A CN103114989 A CN 103114989A
- Authority
- CN
- China
- Prior art keywords
- pump
- pressure
- follow
- hydraulic pump
- energy
- 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
Images
Landscapes
- Fluid-Pressure Circuits (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention relates to a follow-up sensitive pump for an energy-saving hydraulic pump station. The follow-up sensitive pump for the energy-saving hydraulic pump station comprises a hydraulic pump body, a pump pressure oil port is formed in the exterior of the hydraulic pump body, an built-in pressure follow-up valve is additively arranged on an inner oil way which is placed between the hydraulic pump body and the pump pressure oil port, and one end of the hydraulic pump body is connected with a small flow adjusting module. According to the follow-up sensitive pump for the energy-saving hydraulic pump station, the pressure follow-up valve is inbuilt on the pump, the external output pressure of the pump is enabled to be a little higher than the required loading pressure, and a first step energy-saving purpose is achieved. When the follow-up valve on the pump works, the follow-up pressure is connected with a small cylinder which is connected on a tilting tray, and the tilting tray is pushed to a small flow output, and therefore a small flow follow-up pressure effect is achieved. When the system needs to motion quickly, external pressure is reduced, the follow-up valve is shut down instantly, and meanwhile the tilting tray is pushed to a maximum angle, and therefore the pump output is on a maximum flow.
Description
Technical field
The present invention relates to the hydraulics field, relate in particular to a kind of for the servo-actuated responsive pump on energy-saving hydraulic pump station.
Background technique
Although hydraulics has many advantages, efficient low, the very important weakness such as energy dissipation is large, so energy-conservation be one of the important topic that should inquire into of hydraulic transmission technology.Responsive pump control system comes matched load by flow and the pressure that corresponding control valve induction external signal changes pump self output, avoided in general hydraulic system the overflow and the restriction loss that bring due to relief valve and throttle valve, make it possess the characteristics that energy loss is little, efficient is high, nowadays used widely.In servo loading system, because the low frequency characteristic of variable displacement pump can have influence on high frequency dynamic load performance, be all generally with variable displacement pump when metering pump uses, cause a large amount of fluid heating and energy waste; In recent years, although the use of variable-frequency motor and the use of pressure servo valve are arranged, reduced many energy wastes, the former cost is high, and low speed has certain limitation, and the latter also just reduces the overflow after pressure automatically, still has a lot of energy wastes; Only have from output flow and the pressure of pump and start with, could more thoroughly address these problems.Therefore, need in conjunction with above analysis, prior art effectively be innovated.
Summary of the invention
For above defective, the invention provides and a kind ofly realize energy saving, can reach small flow high with kinetic pressure, machining accuracy, be conducive to reduce costs be used for servo-actuated responsive pump on energy-saving hydraulic pump station, to solve many deficiencies of prior art.
For achieving the above object, the present invention is by the following technical solutions:
A kind of for the servo-actuated responsive pump on energy-saving hydraulic pump station, comprise hydraulic pump body, a pumping pressure hydraulic fluid port is offered in this hydraulic pump body outside, set up built-in pressure servo valve on the internal oil passages between hydraulic pump body and pumping pressure hydraulic fluid port, a described hydraulic pump body wherein end is connected with the small flow regulon; The hydraulic pump body that is positioned at pumping pressure hydraulic fluid port adjacent position is set up a load hydraulic fluid port.
Beneficial effect for the servo-actuated responsive pump on energy-saving hydraulic pump station of the present invention is:
⑴ make pump when external delivery pressure by a built-in pressure servo valve on pump, exceeds slightly required on-load pressure, reaches the energy-conservation purpose of the first step;
⑵ when work when the servo valve on pump, it be connected with the small oil tank that is connected on swash plate with kinetic pressure, promote swash plate to a small flow output and (be generally 0.5 ~ 2% of pump, i.e. 0.5l/min ~ 2l/min), reach small flow with the effect of kinetic pressure;
⑶ when need rapid movement when system, external pressure decreased, servo valve cuts out immediately, simultaneously, swash plate is pulled to maximum angle, pump is by peak rate of flow output, can realize energy saving, can reach small flow with kinetic pressure, be conducive to reduce costs.
Description of drawings
The below is described in further detail the present invention with reference to the accompanying drawings.
Fig. 1 is that the embodiment of the present invention is described for the servo-actuated responsive pump structure schematic diagram on energy-saving hydraulic pump station.
In figure:
1, hydraulic pump body; 2, small flow regulon; 3, pressure servo valve; 4, load hydraulic fluid port; 5, pumping pressure hydraulic fluid port.
Embodiment
As shown in Figure 1, the embodiment of the present invention is described for the servo-actuated responsive pump on energy-saving hydraulic pump station, comprise hydraulic pump body 1, a load hydraulic fluid port 4, a pumping pressure hydraulic fluid port 5 are offered respectively in this hydraulic pump body 1 outside, set up built-in pressure servo valve 3 on the internal oil passages between hydraulic pump body 1 and pumping pressure hydraulic fluid port 5, described hydraulic pump body 1 a wherein end is connected with small flow regulon 2.By a built-in pressure servo valve 3 on pump, make pump when external delivery pressure, exceed slightly required on-load pressure, reach the energy-conservation purpose of the first step; When the servo valve on pump was worked, being connected with the small oil tank that is connected on swash plate with kinetic pressure of it promoted swash plate to a small flow output, reaches small flow with the effect of kinetic pressure; When system needs rapid movement, external pressure decreased, servo valve cuts out immediately, simultaneously, swash plate is pulled to maximum angle, pump is by peak rate of flow output, can realize energy saving, can reach small flow with kinetic pressure, be conducive to reduce costs.
Above embodiment is more preferably embodiment a kind of of the present invention, the common variation that those skilled in the art carry out in the technical program scope and replace and should be included in protection scope of the present invention.
Claims (2)
1. servo-actuated responsive pump that is used on energy-saving hydraulic pump station, comprise hydraulic pump body (1), it is characterized in that: a pumping pressure hydraulic fluid port (5) is offered in this hydraulic pump body (1) outside, be positioned on the internal oil passages between hydraulic pump body (1) and pumping pressure hydraulic fluid port (5) and set up built-in pressure servo valve (3), described hydraulic pump body (a 1) wherein end is connected with small flow regulon (2).
2. according to claim 1 for the servo-actuated responsive pump on energy-saving hydraulic pump station, it is characterized in that: the hydraulic pump body (1) that is positioned at pumping pressure hydraulic fluid port (5) adjacent position is set up a load hydraulic fluid port (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100314381A CN103114989A (en) | 2013-01-28 | 2013-01-28 | Follow-up sensitive pump for energy-saving hydraulic pump station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100314381A CN103114989A (en) | 2013-01-28 | 2013-01-28 | Follow-up sensitive pump for energy-saving hydraulic pump station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103114989A true CN103114989A (en) | 2013-05-22 |
Family
ID=48413410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100314381A Pending CN103114989A (en) | 2013-01-28 | 2013-01-28 | Follow-up sensitive pump for energy-saving hydraulic pump station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103114989A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2060209A (en) * | 1979-08-30 | 1981-04-29 | Akermans Verkstad Ab | Hydraulic system |
| JPH0599124A (en) * | 1991-10-07 | 1993-04-20 | Komatsu Ltd | Capacity control device for variable capacity type hydraulic pump |
| WO1996032587A1 (en) * | 1995-04-12 | 1996-10-17 | Komatsu Ltd. | Apparatus for controlling swash-plate pump and motor |
| CN201771496U (en) * | 2010-09-03 | 2011-03-23 | 安徽理工大学 | Hydraulic tracting system for shearer driven by load sensitive pump |
| CN102416940A (en) * | 2011-10-14 | 2012-04-18 | 三一重工股份有限公司 | Hydraulic control system and engineering machine |
| CN202659436U (en) * | 2012-05-05 | 2013-01-09 | 安徽博一流体传动股份有限公司 | Regulator of load sensitive pump |
| CN202673874U (en) * | 2012-06-25 | 2013-01-16 | 江苏海鹏特种车辆有限公司 | Constant-pressure variable control system of load sensitive hydraulic pump |
-
2013
- 2013-01-28 CN CN2013100314381A patent/CN103114989A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2060209A (en) * | 1979-08-30 | 1981-04-29 | Akermans Verkstad Ab | Hydraulic system |
| JPH0599124A (en) * | 1991-10-07 | 1993-04-20 | Komatsu Ltd | Capacity control device for variable capacity type hydraulic pump |
| WO1996032587A1 (en) * | 1995-04-12 | 1996-10-17 | Komatsu Ltd. | Apparatus for controlling swash-plate pump and motor |
| CN201771496U (en) * | 2010-09-03 | 2011-03-23 | 安徽理工大学 | Hydraulic tracting system for shearer driven by load sensitive pump |
| CN102416940A (en) * | 2011-10-14 | 2012-04-18 | 三一重工股份有限公司 | Hydraulic control system and engineering machine |
| CN202659436U (en) * | 2012-05-05 | 2013-01-09 | 安徽博一流体传动股份有限公司 | Regulator of load sensitive pump |
| CN202673874U (en) * | 2012-06-25 | 2013-01-16 | 江苏海鹏特种车辆有限公司 | Constant-pressure variable control system of load sensitive hydraulic pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101929481A (en) | Three-way pressure compensation valve for hydraulic energy saving system | |
| CN102943500A (en) | Energy-saving control method of hydraulic negative flow of excavator | |
| CN203420858U (en) | Novel hydraulic pump constant-flow output and standby state control structure | |
| CN104976170A (en) | Hydraulic pump station with energy-saving buffering protection device | |
| CN204003685U (en) | A kind of braking in a turn hydraulic system and engineering machinery | |
| CN204061380U (en) | Direct drive type volume hydraulic control system | |
| CN106224313B (en) | A kind of pioneer pump overflow valve | |
| CN202984634U (en) | Servo control system for die-casting machine | |
| CN103114989A (en) | Follow-up sensitive pump for energy-saving hydraulic pump station | |
| CN110966266A (en) | Novel single-pump hydraulic control pumping system | |
| CN103541389A (en) | Adjustable independent heat dissipation device of loader-digger | |
| CN211202067U (en) | Energy-saving turbine EH oil station | |
| CN203114798U (en) | Energy-saving servo hydraulic station | |
| CN203031894U (en) | Injection oil path with servo motor for injection molding machine | |
| CN201650893U (en) | High-speed hydraulic system | |
| CN204431683U (en) | A kind of injection machine servo oil circuit control structure | |
| CN105257605B (en) | Energy conversation method and energy conversation device for pressure control hydraulic systems | |
| CN203144016U (en) | Ultrahigh voltage electric hydraulic pump station | |
| CN203500155U (en) | Closed type hydraulic system of engineering vehicle travelling mechanism | |
| CN204099313U (en) | A kind of motor driven hydraulic station | |
| CN203625949U (en) | Novel energy-saving pilot control system | |
| CN203009420U (en) | A bidirectional pump hydraulic power unit | |
| CN102913498B (en) | A kind of energy saver of filter press hydraulic planger pump | |
| CN220929809U (en) | Hydraulic system for double-pump oil supply | |
| CN204828093U (en) | Hydraulic power unit with energy -conserving buffer protection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130522 |