CN107630839A - A kind of hydraulic pressure soft starting device and its application method - Google Patents
A kind of hydraulic pressure soft starting device and its application method Download PDFInfo
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- CN107630839A CN107630839A CN201711010336.6A CN201711010336A CN107630839A CN 107630839 A CN107630839 A CN 107630839A CN 201711010336 A CN201711010336 A CN 201711010336A CN 107630839 A CN107630839 A CN 107630839A
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- outlet
- valve
- oil
- overflow valve
- hydraulic pressure
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Abstract
The invention discloses a kind of hydraulic pressure soft starting device, its drip irrigation device is to include fuel tank, overflow valve, accumulator and solenoid directional control valve, the oil-out of the import connection oil pump of the overflow valve, the outlet connection fuel tank of overflow valve, the import of the entrance connection overflow valve of the solenoid directional control valve, the outlet of the outlet overflow valve of solenoid directional control valve, the exit of the accumulator connection overflow valve.A kind of hydraulic pressure soft starting device of the present invention effectively solves impact of the electric motor starting to power network.
Description
Technical field
The present invention relates to a kind of hydraulic pressure soft starting device and its application method.
Background technology
All it is that the power unit that hydraulic energy is used as equipment is converted into by electric energy in hydraulic servo loading system, works as equipment
Required hydraulic energy not timing, it is necessary to realized by multiple motor pump groups, but during loading, if can not
Solve the problems, such as to start and power network is impacted, a large amount of wastes of the energy can be caused and influence the operation of experiment, serious situation can also
There is situations such as destroying test specimen.
The similar devices produced currently on the market, its startup is all star-triangle start, and impact of the moment to power network is very big,
Although can also realize startup, certain potential safety hazard be present, to the energy using being also irrational, especially run in equipment
All it is injury to motor and pump if if a motor is again started up during, largely effects on its service life, and to operation
In equipment belt impact
The content of the invention
In view of the deficienciess of the prior art, it is an object of the invention to provide a kind of effective electric motor starting that solves to electricity
The hydraulic pressure soft starting device and its application method of the impact of net.
To achieve the above object, the invention provides following technical scheme：A kind of hydraulic pressure soft starting device, including fuel tank,
Overflow valve, accumulator and solenoid directional control valve, the oil-out of the import connection oil pump of the overflow valve, the outlet connection oil of overflow valve
Case, the import of the entrance connection overflow valve of the solenoid directional control valve, the outlet of the outlet overflow valve of solenoid directional control valve are described
Accumulator connects the exit of overflow valve.
The present invention is further arranged to：The hydraulic pressure soft starting device also includes check valve, the import connection of check valve
The outlet of oil pump, the outlet connection oil cylinder of check valve.
The present invention is further arranged to：The hydraulic pressure soft starting device also includes cooler and return filter, described
The outlet of the entrance connection Ei overflow valves of cooler, the import of the outlet connection return filter of cooler, return filter
Outlet fuel tank.
To achieve the above object, present invention also offers following technical scheme：A kind of user of hydraulic pressure soft starting device
Method, its step are：
(1), when the electric motor starting of oil pump, solenoid directional control valve, which triggers, to be in opening state；
(2) while the liquid oil pressure that pumps out of oil pump is more than the 10bar of overflow valve setting value so that overflow valve is in and opened
Logical state；
(3) then fuel pump outlet pressure oil respectively by overflow valve and solenoid directional control valve via cooler and oil return
Filter is returned in fuel tank so that motor realizes that zero load starts；
(4), after the electric motor starting of oil pump terminates, solenoid directional control valve is automatic that TURP changes to closed mode, now overflow
Valve is closed；
(5), the pressure oil output of fuel pump outlet is system loads and is accumulator pressurizing；
(6), DE device end, when closing motor, the hydraulic oil in accumulator will discharge, and decompression of walking unhurriedly, have
Beneficial to the stabilization of system；
(7), when oil pump starts and stopped repeatedly, circulation step (1) to (6), go round and begin again realization loading, the mistake of unloading
Journey.
Present invention tool has the advantage that：1st, can effectively solve impact of the electric motor starting to power network；
2nd, can effectively solve influence of the electric motor starting to load, other operation motors not had an impact；
3rd, can effectively solve influence of the motor stopping to load, other operation motors not had an impact；
By the setting of check valve, the fluid between multiple motor pump groups can be avoided to disturb, by the setting of cooler,
Cooling down processing can be carried out to the hydraulic oil for the fuel tank that flows back, by the setting of return filter, hydraulic oil can be carried out
Contaminant filter operates.
Brief description of the drawings
Fig. 1 is the structural representation figure of the present invention.
In figure：1st, fuel tank；2nd, overflow valve；3rd, accumulator；4th, solenoid directional control valve；5th, check valve；6th, cooler；7th, oil return
Filter.
Embodiment
Shown in reference picture 1, the hydraulic pressure soft starting device of the present embodiment, including fuel tank 1, overflow valve 2, accumulator 3 and electromagnetism
Reversal valve 4, the oil-out of the import connection oil pump of the overflow valve 2, the outlet connection fuel tank 1 of overflow valve 2, the electromagnetic switch
The import of the entrance connection overflow valve 2 of valve 4, the outlet of the outlet overflow valve 2 of solenoid directional control valve 4, the accumulator 3 connect
The exit of overflow valve 2.
The hydraulic pressure soft starting device also includes check valve 5, the outlet of the import connection oil pump of check valve 5, check valve 5
Outlet connection oil cylinder.
The hydraulic pressure soft starting device also includes cooler 6 and return filter 7, the entrance connection of the cooler 6
The outlet of Ei overflow valves 2, the import of the outlet connection return filter 7 of cooler 6, the outlet fuel tank of return filter 7
1。
A kind of application method of hydraulic pressure soft starting device, its step are：
(1), when the electric motor starting of oil pump, solenoid directional control valve 4, which triggers, to be in opening state；
(2) while the liquid oil pressure that pumps out of oil pump is more than the 10bar of overflow valve 2 setting value so that overflow valve 2 is in
Opening state；
(3) then fuel pump outlet pressure oil respectively by overflow valve 2 and solenoid directional control valve 4 via cooler 6 and oil return
Filter 7 is returned in fuel tank 1 so that motor realizes that zero load starts；
(4), after the electric motor starting of oil pump terminates, solenoid directional control valve 4 is automatic that TURP changes to closed mode, now overflow
Valve 2 is closed；
(5), the pressure oil output of fuel pump outlet is system loads and is the pressurising of accumulator 3；
(6), DE device end, when closing motor, the hydraulic oil in accumulator 3 will discharge, and decompression of walking unhurriedly, have
Beneficial to the stabilization of system；
(7), when oil pump starts and stopped repeatedly, circulation step (1) to (6), go round and begin again realization loading, the mistake of unloading
Journey.
By using above-mentioned technical proposal, 1, can effectively solve impact of the electric motor starting to power network；
2nd, can effectively solve influence of the electric motor starting to load, other operation motors not had an impact；
3rd, can effectively solve influence of the motor stopping to load, other operation motors not had an impact.
This hydraulic pressure soft start structure is the ingenious combination by these three components of 2 accumulator of overflow valve, 3 solenoid directional control valve 4
Come what is realized.When the motor is energized, solenoid directional control valve 4 is in opening state, and now overflow valve 2 is at opening state, oil pump
The pressure oil of outlet is all returned in fuel tank 1 by overflow valve 2 via cooler 6 and return filter 7, therefore motor is achieved that zero
Load starts.After startup terminates, solenoid directional control valve 4 is automatic that TURP changes to closed mode, and now overflow valve 2 is at closing
Closed state (the typically setting 10bar higher than operating pressure or so of overflow valve 2 plays a protective role, and prevents system overload), oil pump goes out
The pressure oil output of mouth is system loads and is the pressurising of accumulator 3.Until DE device end, closing motor, in accumulator 3
Hydraulic oil will discharge, decompression of walking unhurriedly, be beneficial to the stabilization of system, go round and begin again realization loading, the process of unloading.If
It is to have more than two motor pump groups, the can of check valve 5 blocks the fluid between each motor pump group so that each electric-motor pump
Each performs its own functions for group, does not interfere with each other.
So that with beneficial effect once：Reduce the impact to power network；
Remove the influence to load；
Improve the stability of synchronous averaging motor pump group；
Eliminate influence of the synchronous averaging motor pump group to other motor pump groups
Described above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art
Those of ordinary skill for, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (4)
- A kind of 1. hydraulic pressure soft starting device, it is characterised in that：It is described to overflow including fuel tank, overflow valve, accumulator and solenoid directional control valve Flow the oil-out of the import connection oil pump of valve, the outlet connection fuel tank of overflow valve, the entrance connection overflow of the solenoid directional control valve The import of valve, the outlet of the outlet overflow valve of solenoid directional control valve, the exit of the accumulator connection overflow valve.
- 2. a kind of hydraulic pressure soft starting device according to claim 1 and its application method, it is characterised in that：The hydraulic pressure is soft Starter also includes check valve, the outlet of the import connection oil pump of check valve, the outlet connection oil cylinder of check valve.
- 3. a kind of hydraulic pressure soft starting device according to claim 1 and its application method, it is characterised in that：The hydraulic pressure is soft Starter also includes cooler and return filter, the outlet of the entrance connection Ei overflow valves of the cooler, cooler Outlet connection return filter import, the outlet fuel tank of return filter.
- A kind of 4. application method of hydraulic pressure soft starting device, it is characterised in that：Its step is：(1), when the electric motor starting of oil pump, solenoid directional control valve, which triggers, to be in opening state；(2) while the liquid oil pressure that pumps out of oil pump is more than the 10bar of overflow valve setting value so that overflow valve is in and opens shape State；(3) then fuel pump outlet pressure oil respectively by overflow valve and solenoid directional control valve via cooler and return filter Return in fuel tank so that motor realizes that zero load starts；(4), after the electric motor starting of oil pump terminates, solenoid directional control valve is automatic that TURP changes to closed mode, now at overflow valve In closed mode；(5), the pressure oil output of fuel pump outlet is system loads and is accumulator pressurizing；(6), DE device end, when closing motor, the hydraulic oil in accumulator will discharge, and decompression of walking unhurriedly, be beneficial to The stabilization of system；(7), when oil pump starts and stopped repeatedly, circulation step (1) to (6), go round and begin again realization loading, the process of unloading.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711010336.6A CN107630839A (en) | 2017-10-25 | 2017-10-25 | A kind of hydraulic pressure soft starting device and its application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711010336.6A CN107630839A (en) | 2017-10-25 | 2017-10-25 | A kind of hydraulic pressure soft starting device and its application method |
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| Publication Number | Publication Date |
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| CN107630839A true CN107630839A (en) | 2018-01-26 |
Family
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711010336.6A Pending CN107630839A (en) | 2017-10-25 | 2017-10-25 | A kind of hydraulic pressure soft starting device and its application method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109372828A (en) * | 2018-10-15 | 2019-02-22 | 中国北方车辆研究所 | A kind of hydraulic control system for comprehensive actuator |
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|---|---|---|---|---|
| CN201771734U (en) * | 2010-07-20 | 2011-03-23 | 济南重工股份有限公司 | Hydraulic starting device of oil pump motor |
| CN103321975A (en) * | 2013-06-05 | 2013-09-25 | 天津航天瑞莱科技有限公司 | Low-high pressure soft-start hydraulic oil source system |
| CN104314894A (en) * | 2014-09-18 | 2015-01-28 | 芜湖高昌液压机电技术有限公司 | Pressure relay type unloading loop for scissor lift |
| CN204828086U (en) * | 2015-08-05 | 2015-12-02 | 云南南星科技开发有限公司 | No beam type hydraulic pumping unit's collection oil increases a class device |
| CN206487695U (en) * | 2017-02-20 | 2017-09-12 | 武汉长江控制设备研究所有限公司 | A kind of minimum differential pressure type oil pump combination valve |
| CN207393592U (en) * | 2017-10-25 | 2018-05-22 | 北京富力通达科技有限公司 | A kind of hydraulic pressure soft starting device |
-
2017
- 2017-10-25 CN CN201711010336.6A patent/CN107630839A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201771734U (en) * | 2010-07-20 | 2011-03-23 | 济南重工股份有限公司 | Hydraulic starting device of oil pump motor |
| CN103321975A (en) * | 2013-06-05 | 2013-09-25 | 天津航天瑞莱科技有限公司 | Low-high pressure soft-start hydraulic oil source system |
| CN104314894A (en) * | 2014-09-18 | 2015-01-28 | 芜湖高昌液压机电技术有限公司 | Pressure relay type unloading loop for scissor lift |
| CN204828086U (en) * | 2015-08-05 | 2015-12-02 | 云南南星科技开发有限公司 | No beam type hydraulic pumping unit's collection oil increases a class device |
| CN206487695U (en) * | 2017-02-20 | 2017-09-12 | 武汉长江控制设备研究所有限公司 | A kind of minimum differential pressure type oil pump combination valve |
| CN207393592U (en) * | 2017-10-25 | 2018-05-22 | 北京富力通达科技有限公司 | A kind of hydraulic pressure soft starting device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109372828A (en) * | 2018-10-15 | 2019-02-22 | 中国北方车辆研究所 | A kind of hydraulic control system for comprehensive actuator |
| CN109372828B (en) * | 2018-10-15 | 2022-09-09 | 中国北方车辆研究所 | Hydraulic control system for comprehensive transmission device |
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