CN208169218U - A kind of constant pressure accumulator system - Google Patents
A kind of constant pressure accumulator system Download PDFInfo
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- CN208169218U CN208169218U CN201820671202.2U CN201820671202U CN208169218U CN 208169218 U CN208169218 U CN 208169218U CN 201820671202 U CN201820671202 U CN 201820671202U CN 208169218 U CN208169218 U CN 208169218U
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- accumulator
- reversal valve
- hydraulic pump
- connect
- servobcylinder
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Abstract
The utility model discloses a kind of constant pressure accumulator systems, including hydraulic pump, hydraulic pump motor and accumulator, the connection of the oil liquid chamber of the hydraulic pump motor and accumulator, the oil inlet of the hydraulic pump is connect with fuel tank, one end of the rodless cavity of the air cavity and cylinder of the accumulator connects, the oil liquid chamber of accumulator is also connect with the first end of reversal valve, the other end of the rodless cavity of cylinder is connect by pressure sensor with comparator one end, the other end of comparator is connected by the second end of controller and reversal valve, the rod chamber end of cylinder and the rod chamber end of servoBcylinder are connected by public piston rod, the rodless cavity of servoBcylinder and the third end of reversal valve connect, 4th end of oil outlet and reversal valve on the rod chamber of servoBcylinder connects, the first end of reversal valve and the oil outlet of hydraulic pump connect.The utility model solves the problems, such as that existing accumulator can not provide stable energy when filling energy and absorption energy effect is poor.
Description
Technical field
The utility model belongs to hydraulic pressure drive control system technical field, and in particular to a kind of constant pressure accumulator system.
Background technique
The increasingly depleted, global problem of environmental pollution in face of current fossil energy surrounds engineering machinery low-carbon, green, energy conservation
Etc. every technology further investigation that is in full swing, there is important society, economy and Significance for Environment.In engineering machinery field, to can
Recover energy the important directions carried out using being energy saving research.Engineering machinery recycling energy usually with mechanical energy, electric energy,
The form of hydraulic energy, which is stored in energy-storage travelling wave tube, to be utilized, and wherein hydraulic energy storage is main is realized by accumulator, accumulator
It is one of hydropneumatic system energy savings device.Accumulator be in due course by the energy conversion in system for pressure
Contracting energy or position can store, and when system needs, and compression energy or position can be changed into the energy such as hydraulic or air pressure and released
Come, mends feed system again；When system instantaneous pressure increases, the energy of this part is can be absorbed in it, to guarantee whole system
Pressure is normal.Accumulator compares more other energy storage methods as one of hydraulic system energy accumulating device, returns with energy
It receives high-efficient, storage and the advantages that rate of release is fast, functional reliability is high, is widely applied in engineering machinery.
The energy storage component that accumulator is recycled as engineer machinery operation mechanism energy, general energy storage pressure are storage energies
Complex nonlinear function.When fill can when pressure rise and the pressure reduction in exoergic, the energy variation range of release are big, can not
Stable energy is provided；When accumulator inside and outside differential pressure is smaller, energy charge and discharge effect is poor, can not sufficiently inhale the energy of system
It receives, and excessively high or too low the blowing pressure can all bring the upper problem of operation or damage accumulator.
Summary of the invention
The utility model solves the deficiencies in the prior art, provides one kind in charge and discharge energy, makes pressure in accumulator
Keep stable constant pressure accumulator system.
Used technical solution is the utility model to achieve the goals above：
A kind of constant pressure accumulator system, including hydraulic pump, hydraulic pump motor and accumulator, the hydraulic pump motor and accumulation of energy
The oil liquid chamber of device connects, and the oil inlet of the hydraulic pump is connect with fuel tank, the rodless cavity of the air cavity and cylinder of the accumulator
One end connection, the oil liquid chamber of accumulator are also connect with the first end of reversal valve, and the other end of the rodless cavity of cylinder is passed by pressure
Sensor is connect with comparator one end, and the other end of comparator is connected by the second end of controller and reversal valve, and cylinder has bar
Chamber end and the rod chamber end of servoBcylinder are connected by public piston rod, and the rodless cavity of servoBcylinder and the third end of reversal valve connect
Connect, the connection of the 4th end of oil outlet and reversal valve on the rod chamber of servoBcylinder, the first end of reversal valve and hydraulic pump it is fuel-displaced
Mouth connection.The utility model is applied in construction machinery hydraulic system, and hydraulic pump carries out fuel feeding to system, and pressure sensor is used for
The pressure signal of the rodless cavity of cylinder is monitored, and pressure signal is fed back and is believed in comparator, comparator and controller according to pressure
The operating position for number adjusting 3-position 4-way solenoid-operated proportional reversal valve, realizes control to servoBcylinder, since servoBcylinder and cylinder are total
With a piston rod, and then realize the control to cylinder.The rodless cavity of cylinder is communicated with the air cavity of accumulator, in cylinder moving
The pressure in the air cavity of accumulator is adjusted in Shi Shixian, its pressure is made to keep constant value.
Preferably, overflow valve is additionally provided between the oil outlet of the hydraulic pump and the first end of reversal valve.
Further, the I-shaped piston that public piston rod is made of connecting rod and the piston head vertical with connecting rod two end
One end of bar, the connecting rod passes through the rod chamber of cylinder, and connect with the piston head central vertical in the rod chamber of cylinder, connecting rod
The other end pass through the rod chamber of servoBcylinder, and connect with the piston head central vertical in the rod chamber of servoBcylinder.
Preferably, the reversal valve is 3-position 4-way solenoid-operated proportional reversal valve.
Preferably, the controller is proportional reversing valve controller.
Preferably, the comparator is pressure comparator.
The utility model keeps the stability of oily cavity pressure, makes accumulation of energy during accumulator entire pressure oil charge and discharge
Device provides pressure stable hydraulic oil when energizing to hydraulic system, reduce the pressure fluctuation and impact in system；Using constant pressure
Hydraulic accumulator eliminates influence of the conventional accumulator charge and discharge characteristic to transaction capabilities, improves ability and recycles efficiency；Energy
The oil-filled difficulty because of oil pocket pressure rise is enough avoided in the oil-filled later period, causes portion of energy that can not be stored in accumulator, is draining the oil
Later period because caused by oil pocket pressure reduction power weaken, influence engineering machinery working performance.
Detailed description of the invention
The utility model is further described referring now to the drawings, wherein：
Fig. 1 is the utility model structure diagram；
Fig. 2 is that the utility model releases energy schematic diagram；
Fig. 3 is that the utility model stores energy diagram；
Description of symbols：1- accumulator, 2- cylinder, 3- pressure sensor, 4- servoBcylinder, 5- 3-position 4-way solenoid-operated proportional
Reversal valve, 6- comparator, 7- controller, 8- overflow valve, 9- hydraulic pump, 10- fuel tank, 11- hydraulic pump motor, 12- 3-position 4-way
Solenoid directional control valve, 13- bi-bit bi-pass proportional throttle valve, the Ith overflow valve of 14-, the IIth overflow valve of 15-, the IIIth overflow valve of 16-, 17-
Ith check valve, the IIth check valve of 18-, 19- hydraulic pump, 20- two-way variable displacement pump, 21- power source.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally
Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical
Novel protected range.
Embodiment 1
As shown in Figure 1, a kind of constant pressure accumulator system, including hydraulic pump motor 11, hydraulic pump 9 and accumulator 1, the liquid
Press pump motor 11 is connect with the oil liquid chamber of accumulator 1, and the oil inlet of the hydraulic pump 9 is connect with fuel tank, the gas of the accumulator 1
Chamber is connect with one end of the rodless cavity of cylinder 2, and the oil liquid chamber of accumulator 1 is also connect with the first end of reversal valve, cylinder 2 without bar
The other end of chamber passes through pressure sensor（KZ-YLF）3 and comparator（AIRTROL F-4103）The connection of 6 one end, comparator
（AIRTROL F-4103）6 other end passes through controller（VT-3000BS30）7 connect with the second end of reversal valve, cylinder 2
Rod chamber end is connect with the rod chamber end of servoBcylinder 4 by public piston rod, and the of the rodless cavity of servoBcylinder 4 and reversal valve
Three ends connect, and the 4th end of oil outlet and reversal valve on the rod chamber of servoBcylinder 4 connects, the first end and hydraulic pump of reversal valve
9 oil outlet connection.
Preferably, overflow valve 8 is additionally provided between the oil outlet of the hydraulic pump 9 and the first end of reversal valve.
Further, the I-shaped piston that public piston rod is made of connecting rod and the piston head vertical with connecting rod two end
One end of bar, the connecting rod passes through the rod chamber of cylinder 2, and connect with the piston head central vertical in the rod chamber of cylinder 2, even
The other end of bar passes through the rod chamber of servoBcylinder 4, and connect with the piston head central vertical in the rod chamber of servoBcylinder 4.
Preferably, the reversal valve is 3-position 4-way solenoid-operated proportional reversal valve 5.
Preferably, the controller（VT-3000BS30）7 be proportional reversing valve controller（VT-3000BS30）7.
Preferably, the comparator（AIRTROL F-4103）6 be pressure comparator（AIRTROL F-4103）.
The present embodiment is applied in construction machinery hydraulic system, when hydraulic system stable operation, pressure sensor（KZ-
YLF）3 pressure signals and comparator monitored（AIRTROL F-4103）Preset value in 6 is identical, controller（VT-
3000BS30）7 according to comparator（AIRTROL F-4103）During 6 signal control 3-position 4-way solenoid-operated proportional reversal valve 5 is in
Position, 1 state of accumulator maintain to stablize；When pressure rise in corresponding hydraulic control system, pressure sensor（KZ-YLF）3 prisons
The pressure signal measured compares comparator（AIRTROL F-4103）Default duty pressure in 6 is high, controller（VT-3000BS30）7
According to comparator（AIRTROL F-4103）6 signal control 3-position 4-way solenoid-operated proportional reversal valve 5 is in left position, servoBcylinder 4
Piston rod withdraw drive 2 piston rod of cylinder stretch out, 1 air cavity volume of accumulator increase, pressure reduce, 1 stocking system of accumulator
Energy；When pressure reduction in corresponding hydraulic control system, pressure sensor（KZ-YLF）3 pressure signals monitored compare
Compared with device（AIRTROL F-4103）Default duty pressure in 6 is low, controller（VT-3000BS30）7 according to comparator（AIRTROL
F-4103）6 signal control 3-position 4-way solenoid-operated proportional reversal valve 5 is in right position, and 4 piston rod of servoBcylinder, which stretches out, drives cylinder 2
Piston rod is withdrawn, and 1 air cavity volume of accumulator reduces, and pressure increases, and the energy of the release storage of accumulator 1 is energized to system；Work as pressure
Force snesor（KZ-YLF）3 pressure signals and comparator monitored（AIRTROL F-4103）Default duty pressure in 6 is equal
When, controller（VT-3000BS30）7 according to comparator（AIRTROL F-4103）6 signal controls 3-position 4-way solenoid-operated proportional
Position in the recovery of reversal valve 5, makes the gas cavity pressure of accumulator 1 maintain steady state value always.
According to pressure sensor（KZ-YLF）The signal of 3 feedbacks, by comparator（AIRTROL F-4103）6 and controller
（VT-3000BS30）7 control the working condition of 3-position 4-way solenoid-operated proportional reversal valve 5, realize to 1 air cavity volume of accumulator
It adjusts, to reach the adjusting to gas cavity pressure, the gas cavity pressure of accumulator 1 is made to maintain steady state value, filled in accumulator 1
The oil-filled difficulty because of oil pocket pressure rise is avoided in the oil-filled later period when exoergic, causes portion of energy that can not be stored in accumulator 1,
Drain the oil the later period because caused by oil pocket pressure reduction power weaken, influence engineering machinery working performance.
Embodiment 2
As shown in Fig. 2, a kind of constant pressure accumulator system, including hydraulic pump motor 11, hydraulic pump 9 and accumulator 1, the liquid
Press pump motor 11 is connect with the oil liquid chamber of accumulator 1, and the oil inlet of the hydraulic pump 9 is connect with fuel tank, the gas of the accumulator 1
Chamber is connect with one end of the rodless cavity of cylinder 2, and the oil liquid chamber of accumulator 1 is also connect with the first end of reversal valve, cylinder 2 without bar
The other end of chamber passes through pressure sensor（KZ-YLF）3 and comparator（AIRTROL F-4103）The connection of 6 one end, comparator
（AIRTROL F-4103）6 other end passes through controller（VT-3000BS30）7 connect with the second end of reversal valve, cylinder 2
Rod chamber end is connect with the rod chamber end of servoBcylinder 4 by public piston rod, and the of the rodless cavity of servoBcylinder 4 and reversal valve
Three ends connect, and the 4th end of oil outlet and reversal valve on the rod chamber of servoBcylinder 4 connects, the first end and hydraulic pump of reversal valve
9 oil outlet connection.
Further, the first end and second end of the hydraulic pump motor 11 pass through three-position four-way electromagnetic directional valve 12 respectively
It is connect with the oil liquid chamber of accumulator 1, the third end and the 4th end of the hydraulic pump motor 11 throttle with bi-bit bi-pass ratio respectively
The both ends of valve 13 connect, and one end of bi-bit bi-pass proportional throttle valve 13 is connect with 14 one end of the Ith overflow valve, the Ith overflow valve 14
The other end is connect with one end of one end of the IIth overflow valve 15 and the IIIth overflow valve 16 respectively, the other end of the IIIth overflow valve 16 with
The other end of bi-bit bi-pass proportional throttle valve 13 connects, and the other end of the IIth overflow valve 15 is connect with hydraulic pump 19, hydraulic pump 19
Oil inlet connect with fuel tank, the other end of hydraulic pump 19 is connect with one end of two-way variable displacement pump 20, the of two-way variable displacement pump 20
Two ends and third end are separately connected the both ends of hydraulic pump motor 11, and the 4th end of two-way variable displacement pump 20 is connect with power source 21, and the Ith
One end of overflow valve 14 is also connect with one end of the Ith check valve 17, and the one of the other end of the Ith check valve 17 and the IIth check valve 18
End connection, the other end of the IIth check valve 18 are connect with the other end of the IIIth overflow valve 16.
Preferably, overflow valve 8 is additionally provided between the oil outlet of the hydraulic pump 9 and the first end of reversal valve 5.
Further, the I-shaped piston that public piston rod is made of connecting rod and the piston head vertical with connecting rod two end
One end of bar, the connecting rod passes through the rod chamber of cylinder 2, and connect with the piston head central vertical in the rod chamber of cylinder 2, even
The other end of bar passes through the rod chamber of servoBcylinder 4, and connect with the piston head central vertical in the rod chamber of servoBcylinder 4.
Preferably, the reversal valve is 3-position 4-way solenoid-operated proportional reversal valve 5.
Preferably, the controller（VT-3000BS30）7 be 5 controller of proportional reversing valve（VT-3000BS30）7.
Preferably, the comparator（AIRTROL F-4103）6 be pressure comparator（AIRTROL F-4103）6.
A kind of constant pressure accumulator system is applied to energy in single hydraulic motor double-loop control system in the present embodiment
It recycles.When accelerating after equipment starting or slowly, left control loop or right control loop independently drive hydraulic motor.
If right control loop drives hydraulic motor, right control loop control bidirectional hydraulic pump 20 is hydraulic motor fuel feeding, meanwhile, quilt
Three-position four-way electromagnetic directional valve 12 in dynamic control loop is in middle position, and passive control loop does not work；If left control loop
Hydraulic motor is driven, then the bi-bit bi-pass proportional throttle valve 13 in right control loop is connected, the 3-position 4-way in left control loop
Solenoid directional control valve 12 is in upper or the next in figure, pressure reduction in left control loop system, pressure sensor（KZ-YLF）3 prisons
The pressure signal measured compares comparator（AIRTROL F-4103）Default duty pressure in 6 is low, controller（VT-3000BS30）7
According to comparator（AIRTROL F-4103）6 signal control 3-position 4-way solenoid-operated proportional reversal valve 5 is in right position, servoBcylinder 4
Piston rod, which stretches out, drives 2 piston rod of cylinder to withdraw, and 1 air cavity volume of accumulator reduces, and pressure increases, the release storage of accumulator 1
Energy is energized to system.
As shown in figure 3, the bi-bit bi-pass proportional throttle valve 13 in right control loop is led when equipment retarding braking
Logical, right control loop does not work；The hydraulic motor being connected to left control loop is in pump condition, and three four in left control loop
Electric change valve 12 is in upper or the next in figure, pressure rise in left control loop system, pressure sensor（KZ-YLF）3
The pressure signal monitored compares comparator（AIRTROL F-4103）Default duty pressure in 6 is high, controller（VT-3000BS30）
7 according to comparator（AIRTROL F-4103）6 signal control 3-position 4-way solenoid-operated proportional reversal valve 5 is in left position, servoBcylinder 4
Piston rod, which is withdrawn, drives 2 piston rod of cylinder to stretch out, and 1 air cavity volume of accumulator increases, and pressure reduces, 1 stocking system energy of accumulator
Amount, kinetic energy are converted into hydraulic energy and store into accumulator 1 for future use.
It above disclosure is merely preferred embodiments of the utility model, certainly cannot be practical new to limit this with this
The interest field of type, therefore equivalent variations made according to the patent scope of the utility model still belong to the utility model and are covered
Range.It should be appreciated that above description be intended to it is illustrative and not limiting.For example, above-described embodiment (and/or its aspect) can
With in combination with one another.In addition, enlightenment according to the present utility model, which can make many remodeling, is suitable for specific situation or material
Material is without departing from the scope of the utility model.By reading foregoing description, in scope and spirit of the claims it is many its
Its embodiment and remodeling it will be apparent to those skilled in the art that.
Claims (6)
1. a kind of constant pressure accumulator system, including hydraulic pump, hydraulic pump motor and accumulator, the hydraulic pump motor and accumulator
The connection of oil liquid chamber, the oil inlet of the hydraulic pump connect with fuel tank, which is characterized in that the air cavity of the accumulator and cylinder
One end of rodless cavity connects, and the oil liquid chamber of accumulator is also connect with the first end of reversal valve, and the other end of the rodless cavity of cylinder is logical
Over-voltage force snesor is connect with comparator one end, and the other end of comparator is connected by the second end of controller and reversal valve, gas
The rod chamber end of cylinder and the rod chamber end of servoBcylinder are connected by public piston rod, the rodless cavity of servoBcylinder and reversal valve
4th end of the connection of third end, oil outlet and reversal valve on the rod chamber of servoBcylinder connects, the first end of reversal valve with it is hydraulic
The oil outlet of pump connects.
2. constant pressure accumulator system according to claim 1, which is characterized in that the oil outlet and reversal valve of the hydraulic pump
First end between be additionally provided with overflow valve.
3. constant pressure accumulator system according to claim 1, which is characterized in that the public piston rod be by connecting rod and
The I-shaped piston rod of vertical with connecting rod two end piston head composition, one end of the connecting rod pass through the rod chamber of cylinder, and with
Piston head central vertical connection in the rod chamber of cylinder, the other end of connecting rod pass through the rod chamber of servoBcylinder, and and servoBcylinder
Rod chamber in piston head central vertical connection.
4. constant pressure accumulator system according to any one of claim 1 to 2, which is characterized in that the reversal valve is three
Position four-way electromagnetic proportional reversing valve.
5. constant pressure accumulator system according to claim 1, which is characterized in that the controller is proportional reversing valve control
Device.
6. constant pressure accumulator system according to claim 1, which is characterized in that the comparator is pressure comparator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820671202.2U CN208169218U (en) | 2018-05-07 | 2018-05-07 | A kind of constant pressure accumulator system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820671202.2U CN208169218U (en) | 2018-05-07 | 2018-05-07 | A kind of constant pressure accumulator system |
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| Publication Number | Publication Date |
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| CN208169218U true CN208169218U (en) | 2018-11-30 |
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| CN201820671202.2U Active CN208169218U (en) | 2018-05-07 | 2018-05-07 | A kind of constant pressure accumulator system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108386397A (en) * | 2018-05-07 | 2018-08-10 | 太原科技大学 | A kind of constant pressure accumulator system |
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2018
- 2018-05-07 CN CN201820671202.2U patent/CN208169218U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108386397A (en) * | 2018-05-07 | 2018-08-10 | 太原科技大学 | A kind of constant pressure accumulator system |
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