CN109175183A - Large-scale stamp forging hydraulic press hybrid-power hydraulic transmission system and method - Google Patents
Large-scale stamp forging hydraulic press hybrid-power hydraulic transmission system and method Download PDFInfo
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- CN109175183A CN109175183A CN201811202320.XA CN201811202320A CN109175183A CN 109175183 A CN109175183 A CN 109175183A CN 201811202320 A CN201811202320 A CN 201811202320A CN 109175183 A CN109175183 A CN 109175183A
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- 238000005242 forging Methods 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 38
- 230000005540 biological transmission Effects 0.000 title claims abstract description 33
- 239000011159 matrix material Substances 0.000 claims abstract description 24
- 239000002828 fuel tank Substances 0.000 claims abstract description 15
- 239000007788 liquid Substances 0.000 claims description 25
- 239000007789 gas Substances 0.000 claims description 12
- 238000003860 storage Methods 0.000 claims description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 11
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 abstract description 16
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 239000000446 fuel Substances 0.000 abstract description 6
- 238000009434 installation Methods 0.000 abstract description 6
- 239000003921 oil Substances 0.000 description 75
- 238000005516 engineering process Methods 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000009740 moulding (composite fabrication) Methods 0.000 description 8
- 150000001875 compounds Chemical class 0.000 description 7
- 238000013461 design Methods 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 5
- 238000001192 hot extrusion Methods 0.000 description 5
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000009966 trimming Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000010725 compressor oil Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010729 system oil Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J9/00—Forging presses
- B21J9/10—Drives for forging presses
- B21J9/12—Drives for forging presses operated by hydraulic or liquid pressure
- B21J9/16—Drives for forging presses operated by hydraulic or liquid pressure in conjunction with steam or gas power
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/16—Control arrangements for fluid-driven presses
- B30B15/163—Control arrangements for fluid-driven presses for accumulator-driven presses
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
- Press Drives And Press Lines (AREA)
Abstract
The invention discloses large-scale stamp forging hydraulic press hybrid-power hydraulic transmission system and methods, valve block is controlled including super-pressure plunger variable pump group, mesohigh accumulator, matrix form multiple-channel output integrated control valve block, accumulator control valve block, low-pressure reservoir, no pressure fuel tank, inflation system, the circulatory system and master cylinder and auxiliary cylinders, the master cylinder and auxiliary cylinders control valve block pass through pipeline and matrix form multiple-channel output integrated control valve block respectively, connect with super-pressure plunger variable pump group and accumulator control valve block and mesohigh accumulator.The present invention is under the premise of fully meeting technique force-power parameter, within a process cycles period, hybrid-power hydraulic transmission system can be more hydraulic press fuel feeding by technique load curve in different periods, installation general power needed for each hydraulic press individually establishes pumping plant can be greatly reduced, the idle or few function of accumulator is effectively reduced to consume, operational efficiency is improved, hydraulic system buying expenses can be substantially reduced, reduces project investment and production run cost.
Description
Technical field
The present invention relates to large-scale stamp forging hydraulic press hybrid-power hydraulic transmission system and methods, belong to metal forming liquid
Technical field of pressing machine.
Background technique
Hydraulic drive pumping plant is the power source of large-scale stamp forging hydraulic press, is the most important technology heart of equipment.When work, liquid
The huge power and operating rate that compressor operation cylinder issues are passed out by hydraulic power unit.Therefore, hydraulic power unit is had
Pressure energy and flow and power consumption, it is necessary to meet the characteristic requirements of various processes and the economy of equipment operation
It is required that.
Currently, Hydraulic Power Transmission System used by large-scale stamp forging hydraulic press, generally there is following two ways:
Traditional water pump-accumulator transmission system, when heavy reduction, can only generate 90% rated pressure, and pressure adjustment is difficult, pressure
Machine stroke control accuracy difference, pressing speed are difficult to automatically adjust, and production technology characteristic is poor；Though the installed power of pump is lower, effect
Rate is lower than 74%, no matter payload size, each impulse stroke all consumes total power, and gross efficiency is low, and energy consumption is higher.For super-huge
Stamp forging hydraulic press then need to increase the face of working cylinder due to the limitation that ultra-high pressure high flow water pump and high pressure accumulator are applied
Product, or take supercharging technology.
Oil pump direct drive system can expire pressure continuous work, and pressing speed automatic control performance is good, the control of press stroke
Precision is high, and the efficiency of pump is greater than 93%, and compared with water pump-accumulator, low energy consumption 30%, and production technology characteristic adaptation is fine；But the dress of pump
Machine power is very high, 60 is reached if a 500MN stamp forging hydraulic press only the main pump quantity of 42MPa pressure, a 800MN die forging
The main pump quantity of hydraulic press reaches 68, also has 30 high pressure turbochargers, and pipe-line system is complicated, and pumping plant is built very huge
Greatly.The installed power of two hydraulic press main pumps is respectively in 24000kW and 27000kW or more.So high installed power, Homes Using TV
It is but very low with operational efficiency, cause project investment increase and production run cost to improve.
Summary of the invention
To solve the above problems, the invention discloses large-scale stamp forging hydraulic press hybrid-power hydraulic transmission systems
And method, propose the hybrid-power hydraulic transmission system of a kind of oil pump direct drive+accumulator flow and Pressure behaviour compensation
Technology develops super-huge multidirectional double acting precise extrusion molding hydraulic press hybrid-power hydraulic transmission joint pumping plant.For spy
Large-scale multidirectional double acting precise extrusion molding hydraulic press, be widely portable to ocean engineering, ship, oil gas, chemical industry, aerospace,
The multidirectional mould extruding, die forging of complicated difficult formed product in weapons, Nuclear Power Industry, isothermal die forging process, etc. drafts forming, etc. forging ratios at
The various metals plasticity flexible compound forming technology such as shape, precision form, superplasticforming, realizes the near-net-shape of such part.
Its specific technical solution is as follows:
Large-scale stamp forging hydraulic press hybrid-power hydraulic transmission system, including several super-pressure plunger variable pump groups, in several
High pressure accumulator, matrix form multiple-channel output integrated control valve block, accumulator control valve block, low-pressure reservoir, no pressure fuel tank, inflation
System, the circulatory system and several master cylinders and auxiliary cylinders control valve block for more hydraulic presses.
The master cylinder and auxiliary cylinders control valve block pass through pipeline and matrix form multiple-channel output integrated control valve block respectively, and super
High-pressure plunger variable pump group controls valve block with accumulator and mesohigh accumulator connects, the output of master cylinder and auxiliary cylinders control valve block
Pipeline is connected respectively to the master cylinder or auxiliary cylinders of controlled hydraulic press.
The super-pressure plunger variable pump group includes several variable pumps, the low-pressure reservoir to every variable oil pump feed and
For the master cylinder filling liquid of each hydraulic press, every variable pump discharge configures a check valve, and it is defeated to be respectively independently connected to matrix form multichannel
Integrated control valve block out；
Mesohigh accumulator includes several oil tanks and gas tank, and tank outlet pipeline is directly connected to accumulator control valve block, stores
Gesture device controls the compensating flowrate of valve block control oil tank output；
Matrix form multiple-channel output integrated control valve block is used to control the flow of super-pressure plunger variable pump group and mesohigh accumulator
It outputs and inputs；
Accumulator control valve block includes high frequency sound proportioning valve, reversal valve, lowest liquid level valve, guide's two-stage pressure overflow valve, decompression
Valve and manual gate valve.The output of the motor-driven flow of the high frequency sound proportional valve control oil tank；The reversal valve controls superelevation compression leg
It fills in variable pump group to operate in a cycle period to the repairing of oil tank, is allowed to restore the power of storage；The lowest liquid level valve
It is responsible for security control of the oil tank in minimum oil level；The operating pressure conversion of guide's two-stage pressure overflow valve control oil tank；
The pressure reducing valve maintains pilot control oil sources of the pressure oil of oil tank as entire hydraulic system；Pass through several manual gate valves
Switching successively connects oil tank oil circuit with the kicker cylinder of corresponding Main cylinder, can be manually implemented under forced outage state
Mold die sinking and backhaul；
Low-pressure reservoir is connect with inflation system and the circulatory system, is filled with or discharges the gas in low-pressure reservoir 5 by inflation system
Pressure realizes heating, cooling and the filtration cycle of low-pressure reservoir by the circulatory system.
In the matrix form multiple-channel output integrated control valve block, the isolating valve of every longitudinal rows be respectively every variable pump and
Accumulator provides input duct, and each input duct is respectively arranged with guide and recycles overflow valve；
It is respectively each independent master cylinder and auxiliary cylinders control per horizontally-arranged isolating valve in matrix form multiple-channel output integrated control valve block
Valve block processed provides the delivery channel of flow, and each delivery channel is respectively arranged with pipeline pressure release valve, makes to lead to each master cylinder and auxiliary
The pipeline and all variable pumps for helping cylinder control valve block being capable of independent pressure releases；
With corresponding horizontally-arranged delivery channel by isolating valve connection, every road delivery channel individually connects the input duct of every file
Valve block is controlled to corresponding master cylinder and auxiliary cylinders.
It further include no pressure fuel tank, the no pressure fuel tank is for collecting super-pressure plunger variable pump group and master cylinder and auxiliary
Cylinder controls the interior leakage oil of valve block, and clean oil liquid is returned to low-pressure reservoir after filtering.
The low-pressure reservoir selects 0.3-0.5MPa pressure oil tank.
The mesohigh accumulator further includes the scene PSA nitrogen gas generating system, is by the scene PSA nitrogen gas generating system and gas compressor
Oil tank and the gas tank pressurising for the first time of mesohigh accumulator, and be allowed to store power.
Large-scale stamp forging hydraulic press hybrid-power hydraulic drive method, when operating pressure is less than 25MPa, speed 25-30mm/
When s, by super-pressure plunger variable pump group oil pump power direct-drive；When operating pressure is greater than 25MPa, less than 32MPa, speed is
When 50-60mm/s, by super-pressure plunger variable pump group oil pump power direct-drive, moved by mesohigh accumulator storage power
State compensation；When operating pressure is greater than 32MPa, less than 42MPa, when speed is 20-30mm/s, by super-pressure plunger variable pump group oil
Pump power direct-drive；Die forging operating condition after prefabricated blank, by 1 oil pump power direct-drive of super-pressure plunger variable pump group, by matching
It closes mesohigh accumulator storage power and carries out dynamic compensation, final shaping stage is by 1 oil pump power of super-pressure plunger variable pump group
Direct-drive；Each auxiliary cylinders of 1# hydraulic press and the working cylinder of other hydraulic presses are dynamic by super-pressure plunger variable pump group oil pump
Power direct-drive.
The beneficial effects of the present invention are:
The present invention is different from existing any oil pump direct drive system or traditional water pump-accumulator transmission system, tool
There are significant novelty, creativeness and practicability.
Oil pump direct drive of the present invention+accumulator flow and the hybrid power of Pressure behaviour compensation combine pumping plant, are oil pumps
Power direct-drive and accumulator storage of power are driven the system combined, are a kind of accumulator storage of power progress dynamic compensation
Oil pump direct drive system.
(1) the characteristics of present invention is according to multidirectional double acting compound hot extrusion process and contour forging technique, has drawn existing transmission system
The advantages of, the shortcomings that having evaded them, under the premise of fully meeting technique force-power parameter, within a process cycles period,
Joint pumping plant can be more hydraulic press fuel feeding by technique load curve in different periods, and it is independent that each hydraulic press can be greatly reduced
Installation general power needed for establishing pumping plant is effectively reduced the idle or few function of accumulator and consumes, improves operational efficiency, can substantially reduce
Hydraulic system buying expenses reduce project investment and production run cost.
(2) when the liquid supply rate of pump direct drive accounts for about 50%, it can satisfy the flow of each 50% maximum operating speed of master cylinder
It needs, fully meets the flow needs of each master cylinder lost motion and other all cylinder maximum operating speeds.Accumulator compensation supplies
50% shared by liquid measure, dynamic flow compensation when can be used for master cylinder middle pressure can be adjusted to 25MPa according to process requirement
With two kinds of pressure rank work of 32MPa, it is also used as oil pump-accumulator transmission.
(3) using multidirectional double acting compound hot extrusion process and direct contour forging technique when, within 85% period, filling or upsetting
Thick load is less than 50% maximum load, using the 25MPa pressure rank of about 42MPa maximum working pressure 50%, directly passes with pump
The dynamic feed flow into cylinder together.The accumulator pressure rate of rise is fast, and energy can be made full use of, meanwhile, 50% is compensated for master cylinder
Liquid supply rate reaches maximum operating speed requirement.When load pressure is more than 25MPa, accumulator stops feed flow, by pumping with 50% most
The flow direct-drive of big operating rate, until work terminates.
(4) it using when contour forging technique, mold one contacts base, and quickly, curring time is shorter for upper pressure after prefabricated blank, uses
32MPa pressure rank, together with pump direct drive into cylinder feed flow.Accumulator energy can be made full use of, meanwhile, to master cylinder
50% liquid supply rate is compensated for, maximum operating speed requirement is reached.When load pressure is more than 32MPa, accumulator stops feed flow, by
Pump is with the flow direct-drive of 50% maximum operating speed, until work terminates.
Or in the license of any operating condition, oil pump direct drive can first be used to carry out jumping-up with 50% maximum operating speed or fill
Extruding is filled out, when load pressure rises to 20MPa, starting accumulator is flow-compensated, until load pressure is more than accumulator pressure
After power, accumulator stops feed flow, by pumping the flow direct-drive with 50% maximum operating speed, until work terminates.Therefore, it stores
Gesture device energy is just fully exploited, and efficiency is improved.
It can be seen that using the oil pump direct drive system of accumulator dynamic compensation, different from unrelated payload size, always
With traditional water pump of maximum pressure work-accumulator transmission, it is also different from the oil of maximum pressure and maximum stream flow, full power installation
Pump direct drive system.Accumulator storage power is intended merely to compensate oily oil pump direct drive in the stream of mesolow load stage
Insufficient section is measured, defined operating rate requirement is reached.
(5) matrix form multiple-channel output integrated valve block is relative to traditional independent, distributed pump head valve, so that entire power train
Road under the overall leadership is most short, and caliber is smaller, it is not necessary that the isolating valve of big orifice is arranged in systems, can effectively reduce pressure when isolation Vavle switching
Power impact；The flow that matrix form multiple-channel output integrated valve block can make each operating cylinder share every pump in different periods supplies
It gives, any pump breaks down in system, can be by any other online substitute work of pump.
The present invention will result directly in a kind of reality of completely new super-huge multidirectional double acting combined precision extrusion molding hydraulic press of mould
It is existing.Its hybrid power transmission principle and structure can be widely applied to the stamp forging hydraulic press of various tonnages, multi-ram forging hydraulic press,
Multidirectional mould hydraulic extrusion press, multidirectional hydralic stamping press etc. can carry out various heat ductile formings, ausforming technique.It is all to bring
Mostly the utility model has the advantages that from technological angle, different directions band branch tooth shape and the complicated integrally-built high-precision zero of cavity type can be shaped
Part realizes flow of metal rate control, enhances product performance and quality, greatly improves production efficiency and stock utilization, lowers
Energy consumption realizes low-carbon production, reduces cost；From engineering viewpoint, extremely it is intimately associated using process characteristic, reasonable disposition is dynamic
Power resource, not only meets the function and performance requirement of hydraulic press, but also total installation of generating capacity and reactive loss is greatly reduced, thus
Reduce energy consumption in the basic charge expenditure and production of customer power supply transformer capacity.Weight of equipment is reduced, equipment is reduced and accounts for
Ground area and melt pit depth simplify Equipment Foundations, plant working area and height space are made to be fully used, and reduce maintenance cost
With with investment cost etc..
Detailed description of the invention
Fig. 1 is the working principle of the invention schematic diagram,
Fig. 2 is the song that the resistance of deformation of the multidirectional double acting compound hot extrusion process simulation of 5 1/8 〞 valve body of representative workpiece changes over time
Line,
Reference signs list: 1-super-pressure plunger variable pump group, 2-mesohigh accumulators, 3-matrix form multiple-channel outputs are integrated
Control valve block, 4-accumulators control valve block, 5-low-pressure reservoirs, 6-no pressure fuel tanks, 7-inflation systems, the 8-circulatory systems,
9-master cylinders and auxiliary cylinders control valve block, 10-pipelines, 11-check valves, 12-1-oil tank, 12-2-gas tank, the scene 13-PSA
Nitrogen gas generating system, 14-isolating valves, 15-guides recycle overflow valve, and 16-pipeline pressure release valves, 17-high frequency sound proportioning valves, 18-change
To valve, 19-lowest liquid level valves, 20-guide's two-stage pressure overflow valves, 21-pressure reducing valves, 22-manual gate valves.
Specific embodiment
With reference to the accompanying drawings and detailed description, the present invention is furture elucidated.It should be understood that following specific embodiments are only
For illustrating the present invention, rather than limit the scope of the invention.
Large-scale stamp forging hydraulic press hybrid-power hydraulic transmission system, main device include: several super-pressure plunger variables
Pump, several mesohigh accumulators, low-pressure reservoir and no pressure fuel tank and its circulatory system, matrix form multiple-channel output integrated control
Valve block, the scene PSA nitrogen gas generating system etc..It is by the pipeline of suitable flow rate that each device is organically connected, to constitute
One can satisfy multidirectional mould extruding, die forging, isothermal die forging process, etc. drafts forming, etc. forging ratios forming, precision form, superplasticity
What the requirement of the various metals plasticity flexible compound forming technologies such as forming and the more hydraulic presses such as prefabricated blank and punching trimming were shared
Joint pumping plant, both can be by pump direct drive, can also be by oil pump-accumulator separate transmission, can also be by pump direct drive+storage
The hybrid power transmission of gesture device flow and Pressure behaviour compensation.
The super-pressure plunger variable pump of large-scale stamp forging hydraulic press hybrid-power hydraulic transmission system is several variable pumps, work
Make pressure greater than 42MPa, output flow is greater than 635L/min, is its fuel feeding by low-pressure reservoir.Accumulator be several oil tanks and
Gas tank, according to production technology needs, operating pressure can adjust between 25-32 MPa, be that it is filled for the first time by the scene PSA nitrogen gas generating system
Pressure.
The maximum output flow of variable pump and the motorised volume of accumulator, by the speed of transmission condition and each Main cylinder
It determines.When operating pressure is less than 25MPa, and speed is 25-30mm/s, by variable pump direct drive；When operating pressure is less than
32MPa when speed is 50-60mm/s, is compensated by variable pump direct drive+accumulator dynamic；When operating pressure be greater than 32MPa,
To 42MPa, when speed is 20-30mm/s, by variable pump direct drive；Die forging operating condition after prefabricated blank is directly passed by variable pump
Dynamic+accumulator dynamic compensates, and final shaping stage is by variable pump direct drive；The master cylinder of 1# hydraulic press and each auxiliary cylinders and
The master cylinder of other hydraulic presses controls valve block with master cylinder and auxiliary cylinders by pipeline respectively and connect, by variable pump direct drive.
Accumulator also can be used as the pilot control oil sources of entire hydraulic system, including to each super-pressure plunger variable pump
Group, auxiliary pump, master cylinder and auxiliary cylinders control valve block, accumulator control the pilot control of valve block；Meanwhile in forced outage state
Down, it can be achieved that mold die sinking function and backhaul function.
The low-pressure reservoir operating pressure is 0.3-0.5MPa, has each Main cylinder idle running fortune for each hydraulic press
Dynamic filling liquid for super-pressure plunger variable pump group and assists the function of oil pump feed.When for Main cylinder filling liquid, using lower pressure
Power, when being super-pressure plunger variable pump group and auxiliary oil pump feed, using the pressure requirements for the oil sucting cavity for being suitable for different pumps, and must
It must be the oil liquid by circulatory system secondary filter and suitable oil temperature.
No pressure fuel tank is for the collection of normal leakage oil, mistake inside the oil return and hydraulic system of pilot control system
Filter and be recirculated back to low-pressure reservoir.
The matrix form multiple-channel output integrated control valve block, by pump head multiple-channel output integrated valve block and accumulator output control
Valve block is constituted.
Pump head multiple-channel output integrated valve block can integrate the motor-driven flow of the total flow of several variable pumps, accumulator input and
Output.The output oil of every variable pump high-pressure outlet oil and the motor-driven flow of accumulator, is input to by a check valve respectively
Integrated valve block.Respectively there is a guide to recycle overflow valve and several isolating valves on each input duct in integrated valve block.Collection
At the total input duct of valve block be equal to variable pump quantity and accumulator input duct and.The total delivery channel of integrated valve block is on-demand
The Main cylinder quantity to be driven determines, generally should be each independent Main cylinder setting delivery channel all the way, if one
When can be compatible in a cycle period, or delivery channel all the way is arranged in more than two Main cylinders altogether.Every road
Delivery channel is by an isolating valve and input duct connection, and the control valve for being connected to each Main cylinder is fast.Every road output stream
Road is respectively arranged with a pipeline pressure release valve.
After the manual gate valve of accumulator be arranged an accumulator output control valve block, by automatically controlled double pressure regulation relief valves,
The composition such as lowest liquid level valve, proportional reversing valve, high-pressure liquid-filling valve, pressure reducing valve.It is more that proportional reversing valve oil outlet pipeline leads to pump head
Road exports integrated valve block.
According to the control needs of each Main cylinder, matrix form multiple-channel output integrated valve block can be exported by the road isolating valve Shi Mei
Mouth shares the flow supply of every pump in different periods.I.e. each master cylinder can share the fuel feeding of all pumps, can both obtain
Single pump, dual stage pump, the more fuel feeding pumped, if it is desired, the flow supply of all pumps can also be obtained.Namely any main pump
With accumulator flow can be provided for any one Main cylinder.
The setting of high-pressure output port runner quantity, in addition to considering what each hydraulic press Main cylinder difference operating condition independently drove
It needs, should also take into account each Main cylinder combined running operating condition.For example, for 1# hydraulic press, it can be achieved that master cylinder 1 or master cylinder 2 are closing
Pressure maintaining, extruding, perforation, ejection (or perforation), die forging, isothermal die forging process, forging pressure classification, moved cross beam correction leveling after mould
Function, synchronization control function.
This oil pump direct drive+accumulator flow and the hybrid-power hydraulic of Pressure behaviour compensation are driven joint pumping plant, such as
Shown in attached drawing 1, including several super-pressure plunger variable pump groups 1, several mesohigh accumulators 2 and the scene PSA nitrogen gas generating system
13, matrix form multiple-channel output integrated control valve block 3, accumulator control valve block 4, low-pressure reservoir 5, no pressure fuel tank 6, inflation system
7, the circulatory system 8, main operating cylinder 9.Each device is connected as shown in schematic diagram by the pipeline 10 of suitable flow rate.
1) super-pressure plunger variable pump group 1
Super-pressure plunger variable pump group 1 of the present invention, according to the process conditions of pump direct drive and deformation technique curve, configuration is minimum
The variable pump of number of units, the operating pressure of variable pump are greater than 42MPa, and output flow is greater than 635L/min, are held using high frequency sound ratio
Product Variable Control is its fuel feeding by low-pressure reservoir 5.Every variable pump discharge configures a check valve 11, is respectively independently connected to square
Configuration multiple-channel output integrated control valve block 3.
It is configured relative to variable pump direct drive system by maximum stream flow, maximum pressure needed for technique maximum operating speed
The quantity of traditional design method, variable pump is greatly reduced, and can reduce by 50% or more installed power, effectively reduce reactive loss
With idle loop power loss, system heat generation is reduced.Variable pump outlet conduit independently arranges that caliber is small, liquid holds small, the rate of rise
Fastly, pressure release impact is small.
2) mesohigh accumulator 2 and the scene PSA nitrogen gas generating system 13
Mesohigh accumulator 2 of the present invention determines motor-driven when mesohigh dynamic compensates according to process conditions and deformation technique curve
Volume and flow configure several oil tanks and gas tank 12.Operating pressure can adjust between 25-32 MPa, by the scene PSA nitrogen system
System 13 is its pressurising for the first time, and is allowed to store power.Tank outlet pipeline is directly connected to accumulator control valve block 4, and by it
Control the compensating flowrate of oil tank output.
Traditional water pump-accumulator the transmission exported relative to unrelated payload size, always with maximum pressure and maximum stream flow
System provides the traditional design method of motorised volume by accumulator completely, and the quantity of required tank is greatly reduced, and can effectively reduce storage
Gesture device is idle or few function consumption, improves transmission efficiency.
3) matrix form multiple-channel output integrated control valve block 3
Matrix form multiple-channel output integrated control valve block 3 of the present invention is integrated with several super-pressure plunger variable pump groups 1 and mesohigh
The flow of accumulator 2 is output and input.
The file of matrix is the input duct of each variable pump 1 and the motor-driven flow of accumulator 2, and the sum of input duct is equal to
The quantity of variable pump 1 and 2 input duct of accumulator and.The horizontally-arranged of matrix 1 is to control valve block 9 to each independent Main cylinder
The delivery channel of flow is provided, the Main cylinder quantity that the sum of delivery channel drives as needed determines, if recycled at one
When can be compatible in period, or delivery channel all the way is arranged in more than two Main cylinders altogether.
Respectively by m isolating valve 14 and m horizontally-arranged delivery channel connection in every file input duct；Every road delivery channel quilt
It is separately connected to m Main cylinder control valve block 9.
Every file input duct is always respectively set a guide and recycles overflow valve 15, both can be used as pump head safety valve,
Middle idle loop can be carried as pump to use；A pipeline pressure release valve 16 is respectively set in every road delivery channel, makes to lead to each master cylinder
Pipeline and all pumps can independent pressure releases.
The traditional design method an of independence, distributed pump head valve group is respectively set relative to every pump, avoids pump head
Circulating valve pressure release impact；Each pump can be in pumping plant individually upper pressure debugging, it is not necessary to worry the switch shape of each main valve block inlet valve
State；The isolating valve that setting big orifice is not needed in pumping plant or main valve block can effectively reduce compression shock when isolation Vavle switching；
The connecting pipe and connector quantity between pump and master cylinder control valve block are greatly reduced, so that entire transmission system pipeline is most short,
Caliber is smaller, and reduces the leakage link that thus may cause；Master cylinder that can be directly different by oil dispensing in pumping plant, institute
There is pump that can serve any one master cylinder.The flow for sharing every pump in different periods per each operating cylinder can be made to supply
It gives, any pump breaks down in system, can be by any other online substitute work of pump, it is not necessary to worry wherein one
Pump does not have oil sources problem after breaking down.
4) accumulator controls valve block 4
Accumulator of the invention controls valve block 4, and the output of the motor-driven flow of oil tank 12-1 is controlled by high frequency sound proportioning valve 17；By changing
Super-pressure plunger variable pump group 1 is controlled in a cycle period to the repairing of oil tank 12-1 operation to valve 18, is allowed to restore to deposit
The power of storage；Security control of the oil tank 12-1 in minimum oil level is responsible for by lowest liquid level valve 19；By guide's two-stage pressure overflow
Valve 20 controls the operating pressure conversion of oil tank 12-1；By pressure reducing valve 21, oil tank 12-1 pressure oil can be made as entire hydraulic pressure system
The pilot control oil sources of system；By the switching of several manual gate valves 22, by oil tank 12-1 oil circuit respectively with the backhaul of Main cylinder
Cylinder connection can manually implemented mold die sinking and the certain stroke of backhaul under forced outage state.
Relative to traditional water pump-accumulator transmission system, accurate control is can be obtained in the flow output of oil tank 12-1, can be real
Existing pressure adjusts and eliminates compression shock, can be used as the pilot control oil sources of hydraulic system, including to each superelevation hydraulic plunger
Variable pump group, auxiliary pump, master cylinder and auxiliary cylinders control valve block, accumulator control the pilot control of valve block, reduce individual control
Make configuration and the installed power of pump.
5) low-pressure reservoir 5 and no pressure fuel tank 6
Low-pressure reservoir 5 of the invention is a 0.3-0.5MPa pressure oil tank, has and meets to each Main cylinder low pressure filling liquid
Function, and have and provide the function of low pressure oil for each super-pressure pump.The gas pressure of fuel tank is filled with or discharged by inflation system 7
Power realizes heating, cooling and the filtration cycle of fuel tank by the circulatory system 8.No pressure fuel tank 6 is connected and is collected by pipeline super
High-pressure plunger variable pump group, auxiliary pump, master cylinder and auxiliary cylinders control valve block, accumulator control returning for the pilot control system of valve block
Normal interior leakage oil, returns to low-pressure reservoir 5 for clean oil liquid after filtering, to keep system oil in oil, pump and system
The balance of liquid measure.
Relative to the design method of oil pump direct drive system conventional, the centrifugation of big flow, high power, poor efficiency is not used
Pump is Main cylinder filling liquid, does not use big flow, high-power screw pump to provide low pressure oil for super-pressure pump, greatly reduces dress
Machine power reduces operation power loss, has saved the energy.
6) the embodiment of the present invention is to develop a kind of oil pump direct drive+accumulator flow and Pressure behaviour compensates
Hybrid-power hydraulic is driven joint pumping plant, is used for the double acting combined precision extrusion molding hydraulic press of the multidirectional mould of seven Shaft and NC Machining Test of 350MN, with
And the driving of 30MN base hydraulic press and 20MN punching three equipment of trimming hydraulic machine.Compared with traditional design, project investment subtracts
Few and production cost reduces significant: installation general power is reduced to 6081.5kW by the former 19253kW that designs, transformer installed capacity by
20000kVA is reduced to 8000kVA, reduces 6,370,000 yuan of capacity basic charge year, year reduces 10,630,000 yuan of energy consumption cost；Substation
Cost, Equipment Foundations cost and hydraulic electric control buying expenses can reduce by more than 50.
Attached drawing 2 is that the resistance of deformation of the multidirectional double acting compound hot extrusion process simulation of 5 1/8 〞 valve body of representative workpiece changes over time
Curve, as seen from the figure, within a loaded cycle period, duration of load application less than 15%, non-duration of load application be greater than 85%, maximum become
Shape drag only accounts for the 15% of duration of load application, accounts for the 2% of entire cycle period.It is average to become even for the die forging operating condition after prefabricated blank
For shape drag also less than the 50% of nominal pressure, duration of load application is much smaller than 10%.
The dust cycle of above-mentioned multidirectional double acting extruding or die forging operating condition is longer, and impulse stroke is smaller, and rate of load condensate is lower,
If designing by pump direct drive system, installed power is very high；If by traditional water pump-accumulator transmission system, the quantity of water pump is pressed
The average value of required flow determines that the quantity of required pump is seldom, and is not able to satisfy a production line in one dust cycle
In the auxiliary cylinder of 350MN hydraulic press, 30MN hydraulic press and 20MN hydraulic press cylinder operating rate needs.Moreover, because
Accumulator maximum pressure is 32MPa, can not meet the requirement of 350MN hydraulic press system pressure 42MPa.
For this purpose, according to the characteristics of multidirectional double acting compound hot extrusion process and the transmission needs of Duo Tai hydraulic press, it is straight using oil pump
It connects transmission and accumulator dynamically compensates the mode combined, constitute hybrid power and combine pumping plant, it is direct oil pump can be given full play to
Be driven power consumption, hyperpressure and speed control, in terms of superiority, meanwhile, using accumulator in mesohigh
The technology of power stage dynamic compensating flowrate, power can be made full use of, and energy consumption is relatively low, reduce installation total work to the maximum extent
Rate, it is energy saving, project investment is reduced significantly and reduces production run cost.
Taking the above-mentioned ideal embodiment according to the present invention as inspiration, through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property range is not limited to the contents of the specification, it is necessary to which the technical scope thereof is determined according to the scope of the claim.
Claims (6)
1. large-scale stamp forging hydraulic press hybrid-power hydraulic transmission system, which is characterized in that including several super-pressure plunger variables
Pump group (1), several mesohigh accumulators (2), matrix form multiple-channel output integrated control valve block (3), accumulator control valve block
(4), several master cylinders of low-pressure reservoir (5), no pressure fuel tank (6), inflation system (7), the circulatory system (8) and more hydraulic presses
Valve block (9) are controlled with auxiliary cylinders,
The master cylinder and auxiliary cylinders control valve block (9) pass through pipeline (10) and matrix form multiple-channel output integrated control valve block respectively
(3), it is connect with super-pressure plunger variable pump group (1) and accumulator control valve block (4) and mesohigh accumulator (2), master cylinder and auxiliary
The output channel of cylinder control valve block (9) is helped to be connected respectively to the master cylinder or auxiliary cylinders of controlled hydraulic press,
The super-pressure plunger variable pump group (1) includes several variable pumps, and the low-pressure reservoir (5) gives every variable oil pump feed
With the master cylinder filling liquid for each hydraulic press, every variable pump discharge configures a check valve (11), is respectively independently connected to matrix form
Multiple-channel output integrated control valve block (3)；
Mesohigh accumulator (2) includes that several oil tanks (12-1) and gas tank (12-2), tank outlet pipeline are directly connected to storage
Gesture device controls valve block (4), and accumulator controls the compensating flowrate of valve block (4) control oil tank output；
Matrix form multiple-channel output integrated control valve block (3) is for controlling super-pressure plunger variable pump group (1) and mesohigh accumulator
(2) flow is output and input；
It includes high frequency sound proportioning valve (17), reversal valve (18), lowest liquid level valve (19), guide's twin-stage that accumulator, which controls valve block (4),
Pressure relief valve (20), pressure reducing valve (21) and manual gate valve (22), high frequency sound proportioning valve (17) control oil tank (12-1)
The output of motor-driven flow；Reversal valve (18) control super-pressure plunger variable pump group (1) is in a cycle period to oil tank
The repairing of (12-1) operates, and is allowed to restore the power of storage；The lowest liquid level valve (19) is responsible for oil tank (12-1) in minimum oil
Security control when position；The operating pressure conversion of guide's two-stage pressure overflow valve (20) control oil tank (12-1)；It is described to subtract
Pressure valve (21) maintains pilot control oil sources of the pressure oil of oil tank (12-1) as entire hydraulic system；Pass through several manual brakes
The switching of valve (22) successively connects oil tank (12-1) oil circuit, in forced outage state with the kicker cylinder of corresponding Main cylinder
Under, it being capable of manually implemented mold die sinking and backhaul；
Low-pressure reservoir (5) is connect with inflation system (7) and the circulatory system (8), is filled with or discharges low pressure oil by inflation system (7)
Gas pressure in case (5) realizes heating, cooling and the filtration cycle of low-pressure reservoir (5) by the circulatory system (8).
2. large size stamp forging hydraulic press hybrid-power hydraulic transmission system according to claim 1, which is characterized in that the square
In configuration multiple-channel output integrated control valve block (3), the isolating valve (14) of every longitudinal rows is respectively every variable pump and mesohigh
Accumulator (2) provides input duct, and each input duct is respectively arranged with guide and recycles overflow valve (15)；
In matrix form multiple-channel output integrated control valve block (3), per horizontally-arranged isolating valve (14) be respectively each independent master cylinder and
Auxiliary cylinders control valve block (9) and provide the delivery channel of flow, and each delivery channel is respectively arranged with pipeline pressure release valve (16), makes to lead to
It being capable of independent pressure release to the pipeline and all variable pumps of each master cylinder and auxiliary cylinders control valve block (9)；
The input duct of every file is with corresponding horizontally-arranged delivery channel by isolating valve (14) connection, and every road delivery channel is individually
It is connected to corresponding master cylinder and auxiliary cylinders control valve block (9).
3. large size stamp forging hydraulic press hybrid-power hydraulic transmission system according to claim 1, which is characterized in that
It further include no pressure fuel tank (6), the no pressure fuel tank (6) is for collecting super-pressure plunger variable pump group (1) and master cylinder
Interior leakage with auxiliary cylinders control valve block (9) is oily, and clean oil liquid is returned to low-pressure reservoir (5) after filtering.
4. large size stamp forging hydraulic press hybrid-power hydraulic transmission system according to claim 1, which is characterized in that
The low-pressure reservoir (5) selects 0.3-0.5MPa pressure oil tank.
5. large size stamp forging hydraulic press hybrid-power hydraulic transmission system according to claim 1, which is characterized in that
The mesohigh accumulator (2) further includes the scene PSA nitrogen gas generating system (13), is middle height by the scene PSA nitrogen gas generating system (13)
Oil tank (12-1) and gas tank (12-2) pressurising for the first time of accumulator (2) are pressed, and is allowed to store power.
6. large-scale stamp forging hydraulic press hybrid-power hydraulic drive method, which is characterized in that when operating pressure is less than 25MPa, speed
When for 25-30mm/s, by super-pressure plunger variable pump group (1) oil pump power direct-drive；When operating pressure be greater than 25MPa, it is small
It, by super-pressure plunger variable pump group (1) oil pump power direct-drive, is stored by mesohigh when speed is 50-60mm/s in 32MPa
Gesture device (2) stores power and carries out dynamic compensation；When operating pressure is greater than 32MPa, less than 42MPa, when speed is 20-30mm/s,
By super-pressure plunger variable pump group (1) oil pump power direct-drive；Die forging operating condition after prefabricated blank, by super-pressure plunger variable pump
Group (1) oil pump power direct-drive carries out dynamic compensation by mesohigh accumulator (2) storage power, and final shaping stage is by surpassing
High-pressure plunger variable pump group (1) oil pump power direct-drive；Each auxiliary cylinders of one of hydraulic press and other hydraulic presses
Master cylinder is by super-pressure plunger variable pump group (1) oil pump power direct-drive.
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