CN209278258U - A kind of double fuel tank voltage-dropping type energy regenerating hydraulic test beds - Google Patents
A kind of double fuel tank voltage-dropping type energy regenerating hydraulic test beds Download PDFInfo
- Publication number
- CN209278258U CN209278258U CN201821742815.7U CN201821742815U CN209278258U CN 209278258 U CN209278258 U CN 209278258U CN 201821742815 U CN201821742815 U CN 201821742815U CN 209278258 U CN209278258 U CN 209278258U
- Authority
- CN
- China
- Prior art keywords
- fuel tank
- oil
- decompression
- hydraulic
- oil pocket
- 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.)
- Withdrawn - After Issue
Links
- 239000002828 fuel tank Substances 0.000 title claims abstract description 104
- 238000012360 testing method Methods 0.000 title claims abstract description 67
- 230000001172 regenerating effect Effects 0.000 title claims abstract description 33
- 230000006837 decompression Effects 0.000 claims abstract description 80
- 239000007788 liquid Substances 0.000 claims description 105
- 239000000243 solution Substances 0.000 claims description 86
- 238000007789 sealing Methods 0.000 claims description 20
- 238000006073 displacement reaction Methods 0.000 claims description 15
- 238000002955 isolation Methods 0.000 claims description 10
- 239000012085 test solution Substances 0.000 claims description 4
- 239000003921 oil Substances 0.000 description 271
- 239000002184 metal Substances 0.000 description 11
- 239000000843 powder Substances 0.000 description 11
- 230000001133 acceleration Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 238000005299 abrasion Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000004886 head movement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Abstract
Double fuel tank voltage-dropping type energy regenerating hydraulic test beds of the utility model include motor, tested solution press pump, the first fuel tank, hydraulic motor and generator；The motor is connect with tested solution press pump, and first fuel tank in turn switches on tested solution press pump and hydraulic motor by oil pipe, and the generator is connect with hydraulic motor；It further include the second fuel tank and pressure unit；Second fuel tank connects the output end of hydraulic motor by oil pipe；For the pressure unit between tested solution press pump and hydraulic motor, the pressure unit includes decompression cylinder and non-test hydraulic pump；The decompression cylinder interior is provided with piston, and the bottom surface of the piston is less than top surface, and the first oil pocket is formed between the bottom surface of piston and decompression cylinder, forms the second oil pocket between top surface and decompression cylinder；The tested solution press pump connects the first oil pocket；Second oil pocket is respectively turned on the input terminal of the second fuel tank and hydraulic motor；The non-test hydraulic pump is between the second fuel tank and the second oil pocket.
Description
Technical field
The utility model relates to hydraulic observation and control technology fields, hydraulic more particularly to a kind of double fuel tank voltage-dropping type energy regeneratings
Testboard.
Background technique
Hydraulic test bed is to critical elements such as hydraulic pump, hydraulic motor, hydraulic cylinder and hydraulic valves in hydraulic system
The device tested of performance.When hydraulic test bed tests hydraulic pump, pressure oil caused by hydraulic pump is directly passed through
Overflow valve outflow, i.e. hydraulic energy are converted to thermal energy and discharge, and cause the consume in vain of energy.
For this phenomenon, it has been developed that energy regenerating hydraulic test bench, the energy wasted for no reason with utilization.Please
It refering to fig. 1, is the schematic diagram of the energy regenerating hydraulic test bed of the prior art.The work of existing energy regenerating hydraulic test bed
It is as follows to make principle: motor driven tested solution press pump sucks oil liquid from fuel tank and tested solution press pump is made to obtain hydraulic energy, quilt
It tests hydraulic pump and hydraulic energy is conveyed to hydraulic motor, hydraulic motor is given by hydraulic energy transfer at mechanical energy and by mechanical energy transmission
Generator, while oil liquid being discharged in oil return box, electrical power generators, which produce electricl energy to be passed through in power grid, realizes energy regenerating, and simultaneously
Oil liquid is recycled.
Applicant have discovered that since energy regenerating hydraulic test bed carries out durability and intensity survey to tested solution press pump
When examination, need to carry out prolonged super-pressure test, and in the form of super-pressure existing for hydraulic energy hydraulic motor can be caused to damage
Wound, causes hydraulic motor short-lived；And tested solution press pump draws the fuel tank of oil liquid and the oil of hydraulic motor release oil liquid
Case is same, then the tested solution press pump by high-intensitive operating, can wear generation metal powder, metal powder is mixed into oil
Hydraulic motor is flowed in liquid, and hydraulic motor is caused to damage.
Utility model content
Based on this, the purpose of the utility model is to provide one kind can be by the High Voltage that tested solution press pump exports
Oil liquid is converted into the oil liquid input hydraulic pressure motor of low pressure, and the metal powder generated by tested solution press pump is avoided to be mixed into oil liquid
The energy regenerating hydraulic test bed of middle abrasion hydraulic motor.
Double fuel tank voltage-dropping type energy regenerating hydraulic test beds of the utility model include motor, tested solution press pump, first
Fuel tank, hydraulic motor and generator；The motor is connect with the tested solution press pump, and first fuel tank is connected by oil pipe
The input terminal of the input terminal of the tested solution press pump, the hydraulic motor connects the defeated of the tested solution press pump by oil pipe
Outlet, the generator are connect with the hydraulic motor；It further include the second fuel tank and pressure unit；Second fuel tank passes through oil
Pipe connects the output end of the hydraulic motor；The pressure unit be located at the tested solution press pump and the hydraulic motor it
Between, the pressure unit includes several decompression cylinders and non-test hydraulic pump；Several described decompression cylinders are arranged in parallel, the drop
Cylinder pressure is internally provided with piston, and the base area of the piston is less than top surface area, and the bottom surface of the piston and the decompression
The first oil pocket is formed between cylinder, forms the second oil pocket between top surface and the decompression cylinder；The tested solution press pump passes through oil pipe
Connect first oil pocket；Second oil pocket is respectively turned on the input of second fuel tank and the hydraulic motor by oil pipe
End；The non-test hydraulic pump is between second fuel tank and the second oil pocket.
Compared with the existing technology, double fuel tank voltage-dropping type energy regenerating hydraulic test beds of the utility model pass through setting decompression
The top surface area of piston in cylinder is greater than base area, so that the cross-sectional area of the second oil pocket is greater than the cross section of the first oil pocket
Product, according to pressure formula F (pressure)=P (pressure) * S (area), in the case where pressure is constant, the pressure of oil liquid in the second oil pocket
The strong pressure lower than oil liquid in the first oil pocket, so that the oil liquid of the low pressure in the second oil pocket flows into hydraulic motor, protection
Hydraulic motor is not damaged by the High Voltage oil liquid from tested solution press pump；In addition, foring one by the second fuel tank of setting
Second fuel tank-the-the second fuel tank of the-the second oil pocket of non-test hydraulic pump-hydraulic motor closed circuit, flows in and out hydraulic motor
Oil liquid be all from the second fuel tank so that flowing through the oil liquid of hydraulic motor without tested solution press pump and hydraulic to be tested
First fuel tank of oil pump feed is worn from tested solution press pump so as to avoid because of the operating of tested solution press pump high intensity
Metal powder be mixed into oil liquid flow into hydraulic motor in wear hydraulic motor the case where appearance.
Further, the pressure unit further includes decompression regulator control system, and the decompression regulator control system includes PLC, several
A displacement sensor and several proportional reversing valves, institute's displacement sensors, the quantity of proportional reversing valve and the decompression cylinder
Quantity is identical, each corresponding displacement sensor of the decompression cylinder and a proportional reversing valve；The setting of institute's displacement sensors
In the decompression cylinder, Xiang Suoshu PLC sends the position signal of piston；The proportional reversing valve is located at the tested solution press pump
On oil circuit on oil circuit between the first oil pocket and between first oil pocket and the first fuel tank, the life of the PLC is received
Control is enabled to be switched on or switched off oil circuit between the tested solution press pump and the first oil pocket and first oil pocket and described the
Oil circuit between one fuel tank, and control the size of oil mass in oil circuit.If an only decompression cylinder working, then only on piston
It is capable of providing oil liquid during moving to use to hydraulic motor, oil liquid cannot be provided in piston folding process for hydraulic motor.Pass through
Setting decompression regulator control system works at the same time so as to coordinate multiple decompression cylinders, during the piston that part is depressured in cylinder moves up,
The piston of other part moves down simultaneously, alternately reciprocal, realizes that the hydraulic energy supply for constantly generating tested solution press pump is hydraulic
Motor and generator carry out energy regenerating.
Further, the inside of the decompression cylinder is T-type cavity, and the piston is T-type piston.
Further, the decompression cylinder interior is additionally provided with sealing ring, and described sealing ring one end is fixed on the decompression cylinder
On inner wall, the other end surrounds the T-type piston；The T-type piston includes wide head and narrow waist, the cross section on the width head
Product is greater than the cross-sectional area of the narrow waist；It is formed between the sealing ring and wide head and epicoele is isolated, the isolation epicoele is logical
It crosses oil pipe and the second fuel tank is connected；It is formed between the sealing ring and narrow waist and cavity of resorption is isolated, the isolation cavity of resorption passes through oil pipe
It is connected with the first fuel tank.Although tested solution press pump and hydraulic motor are arranged on two oil circuits the utility model, liquid is avoided
Pressure motor damage, still can be as the reciprocating movement of piston enters an other oil but be attached to a small amount of oil liquid on piston side wall
Road.Pass through setting sealing ring and be arranged and oil pocket is isolated with what two fuel tanks respectively communicated, so that mixed on a small quantity with piston
Oil liquid, which is passed at once in fuel tank, is diluted replacement, further avoids the intersection of two oil circuits, has ensured hydraulic motor not
Solid impurity damage where being mixed in tested solution press pump in oil circuit oil liquid.
Further, the pressure unit further includes the first accumulator, the second accumulator and third accumulator；Described first
Accumulator is between the non-test hydraulic pump and the second oil pocket；Second accumulator be located at second oil pocket with it is hydraulic
Between motor；The third accumulator receives the oil liquid from tested solution press pump, by the proportional reversing valve to described the
One oil pocket inputs oil liquid.
Further, the pressure unit further includes several first check valves and several second one-way valves and third
Check valve and the 4th check valve；First check valve is between the first accumulator and the second oil pocket, the second one-way valve
Between the second oil pocket and the second accumulator；The number of the quantity of first check valve and second one-way valve and the decompression cylinder
Measure identical, each corresponding first check valve of the decompression cylinder and a second one-way valve, several described first check valves
It is arranged in parallel, several described second one-way valves are arranged in parallel；The third check valve is located at tested solution press pump and third stores
Between energy device, the 4th check valve is between non-test hydraulic pump and the first accumulator.
Further, the pressure unit further includes the 5th check valve, and the 5th check valve is located at non-test hydraulic pump
Between the second accumulator.
It further, further include first filter and the second filter；The first filter is located at the tested solution
Between press pump and third check valve, second filter is between second accumulator and hydraulic motor.
It further, further include the first overflow valve, the first filter is connected in the side of first overflow valve, another
It flanks and leads to first fuel tank；The pressure unit further includes the second overflow valve, described in the side connection of second overflow valve
Second fuel tank is connected in second filter, the other side.
Further, the sealing ring and the decompression inside wall of cylinder are integrally formed.
In order to better understand and implement, according to the present invention will be described in detail below with reference to the accompanying drawings.
Detailed description of the invention
Fig. 1 is the schematic diagram of the energy regenerating hydraulic test bed of the prior art；
Fig. 2 is the schematic diagram of double fuel tank voltage-dropping type energy regenerating hydraulic test beds of the utility model；
Fig. 3 is the connection structure schematic diagram of double fuel tank voltage-dropping type energy regenerating hydraulic test beds of the utility model；
Fig. 4 is the structural schematic diagram of the decompression cylinder of the utility model.
Specific embodiment
Referring to Fig. 2, its schematic diagram for double fuel tank voltage-dropping type energy regenerating hydraulic test beds of the utility model.This reality
The pressure of oil liquid is reduced by the way that pressure unit is arranged between tested solution press pump and hydraulic motor with novel, to protect hydraulic
Motor is not damaged by high-voltage oil liquid；Meanwhile different fuel tanks are separately connected from hydraulic motor by tested solution press pump, so that through
The oil liquid of tested solution press pump is crossed without going past hydraulic motor, is ground so as to avoid because of the operating of tested solution press pump high intensity
The metal powder damaged, which is mixed into oil liquid, to be entered in hydraulic motor, and appearance the case where cause hydraulic motor to wear.
Specifically, referring to Fig. 3, it is the connection of double fuel tank voltage-dropping type energy regenerating hydraulic test beds of the utility model
Structure principle chart.Double fuel tank voltage-dropping type energy regenerating hydraulic test beds of the utility model include motor 10, the first fuel tank 20, quilt
Hydraulic pump 30, pressure unit 40, hydraulic motor 50, generator 60, the second fuel tank 70, first filter 80, second is tested to filter
Device 90 and the first overflow valve 100.
The motor 10 is connect with the tested solution press pump 30；First fuel tank 20 is connected described tested by oil pipe
The input terminal of test solution press pump 30, the output end of the tested solution press pump 30 by oil pipe in turn switch on the pressure unit 40 with
And the input terminal of the hydraulic motor 50, the output end of the hydraulic motor 50 access in the second fuel tank 70；The generator 60
It is connect with the hydraulic motor 50.When work, the motor 10 drives the tested solution press pump 30 from first fuel tank 20
It draws oil liquid and is converted to high hydraulic energy, high hydraulic energy obtains low hydraulic energy by the decompression of pressure unit 40, and low hydraulic energy is passed through liquid
It is converted to mechanical energy in pressure motor 50, while discharging oil liquid into the second fuel tank 70, mechanical energy is converted to electric energy by generator 60
The recycling for realizing tested solution press pump energy consumption for users to use is passed through in power grid.
In addition, output end of the first filter 80 close to the tested solution press pump 30；Second filter 90
Close to the input terminal of the hydraulic motor 50.Filter tentatively filters out the solid impurity in oil liquid, such as metal powder, from
And avoid solid impurity abrasion tested solution press pump 30 and hydraulic motor 50.One end of first overflow valve 90 is connect by oil pipe
Lead to the first filter 80, the other end is accessed in first fuel tank 20 by oil pipe, and formation one hydraulic including being tested
Pump the closed circuit of the first fuel tank of 30- first filter 80- the first overflow valve 100- 20.The closed circuit is in tested solution press pump
30 play a role when withstanding greater than the first overflow valve 100 setting operating pressure, at this point, excessive oil liquid is released by the first overflow valve 90
It is put back into the first fuel tank 20, to reduce the oil liquid pressure that tested solution press pump 30 flows to the first oil pocket A1, alleviates entire oil pipe
The pressure of access is realized to tested solution press pump 30 and with the protection for each component that the first fuel tank 20 is oil liquid source.
The pressure unit 40 includes several decompression cylinders 41, non-test hydraulic pump 42 and decompression regulator control system 43, wherein
In several described decompression access oil circuits parallel with one another of cylinder 41.
Specifically, the decompression cylinder 41 is internally provided with piston 411, and the top surface area of the piston 411 is greater than bottom surface face
Product.The piston 411 moves back and forth in decompression cylinder 41, will be separated into two independent chambers inside the decompression cylinder 41；Wherein,
The first oil pocket A1, the top surface of the piston 411 and decompression cylinder 41 are formed between the bottom surface and decompression 41 bottom surface of cylinder of the piston 411
The second oil pocket A2 is formed between top surface.The first oil pocket A1 is connected described in the connection of first filter 80 by oil pipe
The output end of tested solution press pump 30, to receive the oil liquid with high hydraulic energy being converted to from tested solution press pump 30.Institute
It states the second oil pocket A2 and on the one hand passes through non-test oil liquid of the acquisition of hydraulic pump 42 from the second fuel tank 70, on the other hand pass through oil pipe
It connects second filter 80 and then connects the input terminal of the hydraulic motor 50, supplied with release from 70 oil liquid of the second fuel tank
Hydraulic motor 50 is converted to mechanical energy.According to pressure formula F (pressure)=P (pressure) * S (area), due to the top surface of piston 411
Area is greater than base area, so that the cross-sectional area of the second oil pocket A2 is greater than the cross-sectional area of the first oil pocket A1, it is constant in pressure
In the case where, the pressure of oil liquid is lower than the pressure of oil liquid in the first oil pocket A1 in the second oil pocket A2, so that flowing into hydraulic horse
Oil liquid up to 50 has relatively low pressure, i.e. hydraulic energy, realizes and hydraulic motor 50 is protected not damaged by high hydraulic energy.
The decompression regulator control system 43 includes PLC431, several displacement sensors 432, several proportional reversing valves 433,
Wherein, the quantity of institute's displacement sensors 432 and proportional reversing valve 433 is identical as the decompression quantity of cylinder 41 and one is a pair of
It answers.Institute's displacement sensors 432 are set on the piston 411, for experiencing the piston 411 in the decompression cylinder 41
Position, and the position signal of the piston 411 is transferred to the PLC431.The proportional reversing valve 433 is set to described
On oil circuit between three accumulators 49 and 30 output end of tested solution press pump and the first oil pocket A1 and the first oil pocket A1
On oil circuit between first fuel tank 20, the proportional reversing valve 433 is also electrically connected with the PLC；The ratio commutation
Valve 433 receives the order of the PLC431, controls the oil circuit between open or closed tested solution press pump 30 and the first oil pocket A1,
With the oil circuit being switched on or switched off between the first oil pocket A1 and the first fuel tank 20, and control oil liquid flowing speed, to control work
Moving direction and speed of the plug 411 in decompression cylinder 41.Specifically, when the left station of proportional reversing valve 433 works, tested solution
Oil circuit between press pump 30 and the first oil pocket A1 is connected, the oil circuit between the first oil pocket A1 and the first fuel tank 20 disconnects, oil liquid from
Tested solution press pump 30 flows to the first oil pocket A1, and piston 411 moves up；When 433 right working position of proportional reversing valve works, the first oil pocket A1
Oil circuit between the first fuel tank 20 is connected, the oil circuit between tested solution press pump 30 and the first oil pocket A1 disconnects, and oil liquid is from the
One oil pocket A1 flows to the first fuel tank 20, and piston 411 moves down.Also, no matter proportional reversing valve 433 carries out left station work or the right side
Station work, when spool moves to right, the oil mass in oil circuit increases, and the speed that piston 411 moves up and declines is accelerated；Its spool moves to left
When, the oil mass in oil circuit is reduced, and the speed that piston 411 moves up and declines slows down.
From the foregoing, it will be observed that 433 (left station of the first fuel tank 20- tested solution press pump 30- first filter 80- proportional reversing valve
Work) the-the first oil pocket A1- proportional reversing valve 433 (right working position work) the-the first fuel tank 20 formation one closed circuit；Second oil
The second fuel tank of case 70- non-test the second oil pocket of hydraulic pump 42- A2- the second filter 90- hydraulic motor 50- 70 forms another and closes
Oil circuit is closed, and the first oil pocket A1 and the second oil pocket A2 are separated by piston 411.As it can be seen that flow through the oil liquid of tested solution press pump 30 with
The oil liquid for flowing through hydraulic motor 50 is non-cross, the metal worn so as to avoid tested solution press pump by high-intensitive operating
Powder, which is mixed into oil liquid, flows into hydraulic motor, and damages hydraulic motor.
In addition, being provided with the first accumulator 44, institute between the output end of the non-test hydraulic pump 42 and the second oil pocket A2
It states and is provided with the second accumulator 45 between the second oil pocket A2 and the second filter 80, the first filter 70 and the first oil pocket A1
Between be provided with third accumulator 46.A small amount of oil liquid can be stored using accumulator and can stablize the feature of output oil liquid, made
The first oil pocket A1, the second oil pocket A2 and hydraulic motor 50 can steadily be entered in time by obtaining oil liquid.
The first check valve 47, first check valve are provided between first accumulator 44 and the second oil pocket A2
47 control oil liquid uni-directionally flow to the second oil pocket A2 from the first accumulator 44；The second oil pocket A2 and second accumulator
Second one-way valve 48 is provided between 45, the second one-way valve 48 controls oil liquid and uni-directionally flows to second from the second oil pocket A2
Accumulator 45.The quantity of first check valve 47 and second one-way valve 48 is identical as the decompression quantity of cylinder 41 and one is a pair of
It answers, i.e. the second oil pocket A2 of each decompression cylinder 41 is correspondingly connected with first check valve 47 and a second one-way valve 48.Institute
It states and is provided with third check valve 49 between first filter 70 and the third accumulator 46, the third check valve 49 controls oil
Liquid uni-directionally flows to the third accumulator 46 from the tested solution press pump 30, described tested for avoiding oil liquid from flowing back to
Test solution press pump 30 and the damage for causing the tested solution press pump 43；The output end of the non-test hydraulic pump 42 and described first
The 4th check valve 410 is provided between accumulator 44, the 4th check valve 410 control oil liquid is uni-directionally from described non-test
Hydraulic pump 42 flows to first accumulator 44, causes described non-for avoiding oil liquid from flowing back to the non-test hydraulic pump 42
Test the damage of hydraulic pump 42.
In summary, two complete oil circuits in the utility model are as follows: the non-test hydraulic pump 42- the 4th of the second fuel tank 70-
Check valve 410- the first accumulator 44- the first check valve 47- the second oil pocket A2- second one-way valve the second accumulator of 48- 45- second
The second fuel tank of filter 90- hydraulic motor 50- 70；With the first fuel tank 20- tested solution press pump 30- first filter 80- third
433 (left station work)-the first oil pocket A1- proportional reversing valve of check valve 49- third accumulator 46- proportional reversing valve, 433 (right work
Position work) the-the first fuel tank 20.Wherein, in above-mentioned Article 2 oil circuit, the third accumulator 46 can also be from the tested solution
After drawing oil liquid in press pump 30, is accessed in oil circuit by the way of in parallel with the tested solution press pump 30, be jointly first
Oil pocket A1 provides oil liquid.
Further, it is single that the 5th is provided between the output end of the non-test hydraulic pump 42 and second accumulator 45
To valve 420.The 5th check valve 420- the second accumulator 45- the second filter 90- hydraulic motor the second fuel tank of 50- 70- is non-
It tests hydraulic pump 42 and constitutes a closed circuit.The closed circuit has supplementary function.As second the second oil pocket of fuel tank 70- A2-
(the first check valve 47, second one-way valve 48 and the 4th are single for any check valve on second accumulator 45- hydraulic motor, 50 working connection
To valve 410) breaking down causes oil circuit obstructed, and when hydraulic motor 50 can not obtain oil liquid, the 5th check valve 420 is opened, above-mentioned
Closed circuit is connected offer oil liquid and is used to hydraulic motor 50, until working connection restores.
The output end of the non-test hydraulic pump 42 is provided with the second overflow valve 430, one end of second overflow valve 430
The output end of the non-test hydraulic pump 42 is connected by oil pipe, the other end accesses second fuel tank 70 by oil pipe, is formed
One closed circuit including non-test the second overflow valve of hydraulic pump 42- 430 of the second fuel tank 70-.The closed circuit is non-test
Hydraulic pump 42 plays a role when withstanding greater than the second overflow valve 430 setting operating pressure, and excessive oil liquid passes through the second overflow valve 430
The second fuel tank 70 is released back to, so that the oil liquid pressure that non-test hydraulic pump 42 flows to the first oil pocket A1 is reduced, to non-test liquid
Press pump 42 and with the second fuel tank 70 be oil liquid source all components protected.
It preferably, is the cavity of T-type inside the decompression cylinder 41, the piston 411 is T-type piston, the T-type piston
411 move back and forth in the cavity of T-type.Referring to Fig. 4, its structural schematic diagram for the decompression cylinder of the utility model.The T-type
Cavity include wide cavity portion and with the orthogonal narrow cavity portion in wide cavity portion, wherein the diameter of wide cavity portion is greater than the diameter of narrow cavity portion；Institute
State T-type piston 411, including wide head and with the orthogonal narrow waist 4112 in wide head 4111, the width of the T-type piston 411
Head 4111 is moved in the wide cavity portion of the decompression cylinder 41, and the narrow waist 4112 of the T-type piston 411 is in the decompression cylinder 41
Wide cavity portion and narrow cavity portion in move.The first oil pocket A1 being separated to form inside the decompression cylinder 41 by T-type piston 411 is located at narrow
Cavity portion, the second oil pocket A2 are located at wide cavity portion.
The wide cavity portion of the decompression cylinder 41 is additionally provided with sealing ring 412, and the side of the sealing ring 412 is fixed on the drop
On cylinder pressure 41, narrow waist 4112 of the other side immediately around the T-type piston 411.At this point, the wide head of the T-type piston 411
4111 move between the sealing ring 412 and decompression 41 top surface of cylinder of the wide cavity portion.And 412 bottom surface of sealing ring and the drop
It is formed between the wide cavity portion of cylinder pressure 41 and the inner wall of narrow cavity portion boundary and cavity of resorption A3 is isolated, the isolation cavity of resorption A3 is connected by oil pipe
First fuel tank 20 replaces the oil liquid in isolation cavity of resorption A3；412 top surface of sealing ring and the T-type piston 411
4111 bottom surface of wide head between form isolation epicoele A4, the isolation epicoele A4 connects second fuel tank 70 by oil pipe,
Oil liquid in isolation epicoele A4 is replaced.
Because while the utility model utilizes two non-cross oil circuits, so that hydraulic motor will not be hydraulic because being tested
It pumps the metal powder generated and wears, still, since mobile meeting of piston 411 comes from the so that being adhered on 411 wall of piston
A small amount of oil liquid of one oil pocket A1 enters in the second oil pocket A2, enters hydraulic motor to be mixed into the oil liquid of the second oil pocket A2
50.And sealing ring 412, isolation cavity of resorption A3 and the setting that epicoele A4 is isolated, it is able to solve above-mentioned technical problem.Because being adhered to
It is mixed into the oil liquid within the scope of wide head movement through the movement of piston 411 on 411 wall of piston, it can be by from the clean of the second fuel tank 70
Oil liquid replaces, thus further reduced hydraulic motor by tested solution press pump oil circuit metal powder wear can
It can property.Preferably, the sealing ring 42 is integrally formed with 41 inner wall of decompression cylinder, and the other side is closely around the T-type piston
411 narrow waist 4112, can play preferably sealing effect.
Hereinafter, telling about the utility model by taking two decompression cylinders 41 (the first decompression cylinder 41a and the second decompression cylinder 41b) as an example
Double fuel tank voltage-dropping type energy regenerating hydraulic test beds the course of work.Wherein, corresponding with the first decompression cylinder 41a is the first T
Type piston 411a, the first displacement sensor 423a, the first proportional reversing valve 433a, No.1 the first check valve 47a and No.1 second
Check valve 48a, and two oil pockets in the first decompression cylinder 41a are respectively No.1 the first oil pocket A1a and the second oil pocket of No.1 A2b；
With second decompression cylinder 41b it is corresponding be the second T-type piston 411b, second displacement sensor 423b, the second proportional reversing valve 433b,
No. two first check valve 47b and No. two second one-way valve 48b, and two oil pockets in the second decompression cylinder 41b are respectively No. two the
One oil pocket A1b and No. two second oil pocket A2b.In addition, the top surface area of setting decompression cylinder 41 is twice of base area, Suo Youdan
It is zero to the cracking pressure of valve.Before also setting test starts, the pressure of the first overflow valve 100 is zero, the pressure of the second overflow valve 430
Power is 1 megapascal.
When starting to test the performance of tested solution press pump 30, the pressure of the first overflow valve 100 is set as 2 megapascal and starts electricity
Machine 10.Motor 10 drives tested solution press pump 30 to draw oil liquid from the first fuel tank 20 and is tested, and tested solution press pump 30 will
Oil liquid with high hydraulic energy (High Voltage), which is output in third accumulator 46, temporarily to be stored.It is exported when tested solution press pump 30
Oil liquid pressure is higher than 2 megapascal, and part oil liquid returns in the first fuel tank 20 through the first overflow valve 100, so that tested solution press pump 30
The oil liquid pressure in third accumulator 46 is output to not higher than 2 megapascal, to protect all components in oil circuit (high not by High Voltage
Hydraulic energy) oil liquid damage.In order to avoid the top and bottom of the piston direct collision decompression inside wall of cylinder, piston and decompression cylinder are caused
Inner wall abrasion sets T-type piston 411 movably extreme higher position and extreme lower position in decompression cylinder 41 by PLC431.The T-type
Piston 411 is located at lowest position before activation.
Start non-test hydraulic pump 42, non-test hydraulic pump 42 draws oil liquid by the 4th check valve from the second fuel tank 70
In 410 the first accumulators 44 of input, after the pressure in the first accumulator 44 rises to 1 megapascal, the first check valve of No.1 is opened
47a and No. two first check valve 47b, the oil liquid in the first accumulator 44 pass through No.1 the first check valve 47a respectively and flow into No.1
In second oil pocket A2b, flowed into No. two second oil pocket A2b by No. two first check valve 47b.
Next the pressure of the first overflow valve 100 is turned up, more oil liquid is allowed to flow to first from tested solution press pump 30
Oil pocket A1.PLC431 is run simultaneously, the first proportional reversing valve of PLC431 order 433a at the uniform velocity increases electric current, so that the first ratio is changed
It is at the uniform velocity moved to right to the spool of valve 433a, carries out left station work, connect third accumulator 430 and tested solution press pump 30 and one
Oil circuit between number the first oil pocket A1a, third accumulator 430 and tested solution press pump 30 pass through the first proportional reversing valve 433a
Accelerate injection oil liquid into the first oil pocket of No.1 A1a, the first T-type piston 411a acceleration moves up will be in the second oil pocket of No.1 A2a
Oil liquid is released, and oil liquid enters in the second accumulator 45 by No.1 second one-way valve 48a to be stored.First T-type piston 411a accelerates
When moving up the extreme higher position set close to PLC431, the first displacement sensor 423a is by the position signal of the first T-type piston 411a
PLC431 is passed to, the first proportional reversing valve of PLC431 order 433a at the uniform velocity reduces electric current, so that its spool moves to left, still carries out a left side
Station work, third accumulator 430 and tested solution press pump 30 are continued by the first proportional reversing valve 433a to No.1 first
Oil liquid is injected in oil pocket A1a but oil injecting speed reduction, the first T-type piston 411a, which continues to move up, releases the second oil pocket of No.1 A2b
In oil liquid but move up speed and slow down；At the same time, the second proportional reversing valve of PLC431 order 433b at the uniform velocity increases electric current, makes
The spool for obtaining the second proportional reversing valve 433b moves to right, and carries out left station work, third accumulator 430 and tested solution press pump 30
Oil circuit between No. two first oil pocket A1b is also switched on, and third accumulator 430 and tested solution press pump 30 compare by second
Example reversal valve 433b injects oil liquid into No. two first oil pocket A1b, and the second T-type piston 411b acceleration is moved up No. two second oil pockets
Oil liquid in A2b is released, and oil liquid enters in the second accumulator 45 by No. two second one-way valve 48b keeps in.To the first T-type piston
When moving to extreme higher position on 411a, the spool of the first proportional reversing valve 433a is located at middle position and continues to move to left, the commutation of the first ratio
Valve 433a carries out right working position work, the oil between third accumulator 430 and tested solution press pump 30 and the first oil pocket of No.1 A1a
Road disconnects, and connects the oil circuit between No.1 the first oil pocket A1a and the first fuel tank 20, at this time due to No.1 the second oil pocket A2a and the
One accumulator 44 is connected, and the pressure in the second oil pocket of No.1 A2a is 1 megapascal, and No.1 the first oil pocket A1a connects with the first fuel tank 20
Logical, the pressure in the first oil pocket of No.1 A1a is 0 megapascal, and the first T-type piston 411a acceleration moves down；At the same time, the second T-type is living
Plug 411b still is accelerating to move up the oil liquid released in No. two second oil pocket A2b.The speed that moves down of PLC431 setting piston 411 is greater than
Therefore the rate of climb is moved up compared to the second T-type piston 411b acceleration close to extreme higher position, the first T-type piston 411a takes the lead in accelerating
Decline is close to extreme lower position, and then the first T-type piston 411a is slowed down to extreme lower position and standby in extreme lower position, and then the
Two T-type piston 411b acceleration is moved up close to extreme higher position, and second displacement sensor 432b believes the position of the second T-type piston 411b
Number PLC431 being passed to, the second proportional reversing valve of PLC431 order 433b at the uniform velocity reduces electric current, so that its spool moves to left, at this time
Two proportional reversing valve 433b still carry out left station work, and third accumulator 430 and tested solution press pump 30 are remained to by second
Proportional reversing valve 433b, which continues to inject oil liquid but oil injecting speed into No. two first oil pocket A1b, to be slowed down, the second T-type piston 411b after
The continuous oil liquid moved up in No. two second oil pocket A2b of release still moves up speed and slows down；Simultaneously, the first ratio of PLC431 order
Reversal valve 433a at the uniform velocity increases electric current, carries out left station work, connects third accumulator 430 and tested solution press pump 30 and one
Oil circuit between number the first oil pocket A1a is accelerated injection oil liquid in the first oil pocket of No.1 A1a, the first T-type piston 411a is pushed to add
Speed is moved up for the oil liquid in the second oil pocket of No.1 A2a to be pushed into the second accumulator 45 and be kept in.When in the second T-type piston 411b deceleration
Move on to extreme higher position, the spool of the second proportional reversing valve 433b is located at middle position and continues to move to left, the second proportional reversing valve 433b into
The work of row right working position, the oil circuit between third accumulator 430 and tested solution press pump 30 and No. two first oil pocket A1b disconnect,
The oil circuit between No. two first oil pocket A1b and the first fuel tank 20 is connected, at this time due to No. two second oil pocket A2b and the first accumulator
44 connect, and the pressure in No. two second oil pocket A2b is 1 megapascal, and No. two first oil pocket A1b and the first fuel tank 20 are connected, and No. two
Pressure in first oil pocket A1b is 0 megapascal, and the second T-type piston 411b acceleration moves down, and is moved up to the first T-type piston 411a acceleration
To close to before extreme higher position, the second T-type piston 411b acceleration is displaced downwardly to close to extreme lower position and then and slows down to most
Lower position is simultaneously standby in extreme lower position.
Above-mentioned movement, the oil liquid in the second accumulator 45 is repeated in first T-type piston 411a and the second T-type piston 411b
It is just ceaselessly supplemented, pressure, which is slowly increased, to be sent out until hydraulic motor 50 can be driven to be converted into mechanical energy for generator 60
Electricity realizes energy regenerating.In the device course of work, the pressure of the oil liquid of input hydraulic pressure motor 50 is only tested solution press pump
The half of the 30 oil liquid pressure generated protects hydraulic motor 50 not to be damaged while completing pump performance test；And
And tested solution press pump 30 and hydraulic motor 50 are located at two non-cross oil circuits, avoid from tested solution press pump 30
The metal powder worn, which is mixed into oil liquid, wears hydraulic motor.
Compared with the existing technology, double fuel tank voltage-dropping type energy regenerating hydraulic test beds of the utility model pass through setting decompression
The top surface area of piston in cylinder is greater than base area, so that the cross-sectional area of the second oil pocket is greater than the cross section of the first oil pocket
Product, according to pressure formula F (pressure)=P (pressure) * S (area), in the case where pressure is constant, the pressure of oil liquid in the second oil pocket
The strong pressure lower than oil liquid in the first oil pocket, so that the oil liquid of the low pressure in the second oil pocket flows into hydraulic motor, protection
Hydraulic motor is not damaged by the High Voltage oil liquid from tested solution press pump；Meanwhile hydraulic motor and tested in the utility model
Test solution press pump is located in two non-cross oil circuits, so as to avoid due to the operating of tested solution press pump high intensity from tested
The metal powder to get off is worn on hydraulic pump is mixed into oil liquid the case where flowing into abrasion hydraulic motor in hydraulic motor appearance；And
And worked at the same time by setting decompression regulator control system so as to coordinate multiple decompression cylinders, the piston that part is depressured in cylinder moves up
In the process, the piston of other part moves down simultaneously, alternately reciprocal, realizes that the hydraulic energy for constantly generating tested solution press pump supplies
Energy regenerating is carried out to hydraulic motor and generator；In addition, respectively communicated by setting sealing ring and setting with two fuel tanks
Oil pocket is isolated, so that mixed oil liquid is passed into fuel tank at once and is diluted replacement on a small quantity with piston, further avoids
The intersections of two oil circuits has ensured the solid impurity damage in oil circuit oil liquid where hydraulic motor is not mixed in tested solution press pump
Wound.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The protection scope of the utility model.
Claims (10)
1. a kind of double fuel tank voltage-dropping type energy regenerating hydraulic test beds, including it is motor, tested solution press pump, the first fuel tank, hydraulic
Motor and generator；The motor is connect with the tested solution press pump, and first fuel tank is connected described tested by oil pipe
The input terminal of test solution press pump, the input terminal of the hydraulic motor connect the output end of the tested solution press pump, institute by oil pipe
Generator is stated to connect with the hydraulic motor；It is characterized by also including the second fuel tank and pressure units；Second fuel tank is logical
Cross the output end that oil pipe connects the hydraulic motor；The pressure unit is located at the tested solution press pump and the hydraulic motor
Between, the pressure unit includes several decompression cylinders and non-test hydraulic pump；Several described decompression cylinders are arranged in parallel, described
Decompression cylinder interior is provided with piston, and the base area of the piston is less than top surface area, and the bottom surface of the piston and the drop
The first oil pocket is formed between cylinder pressure, forms the second oil pocket between top surface and the decompression cylinder；The tested solution press pump passes through oil
Pipe connects first oil pocket；Second oil pocket is respectively turned on the defeated of second fuel tank and the hydraulic motor by oil pipe
Enter end；The non-test hydraulic pump is between second fuel tank and the second oil pocket.
2. double fuel tank voltage-dropping type energy regenerating hydraulic test beds according to claim 1, it is characterised in that: the decompression is single
Member further includes decompression regulator control system, and the decompression regulator control system includes PLC, several displacement sensors and the commutation of several ratios
Valve, institute's displacement sensors, the quantity of proportional reversing valve are identical with the quantity of the decompression cylinder, each decompression cylinder corresponding one
A displacement sensor and a proportional reversing valve；Institute's displacement sensors are set in the decompression cylinder, and Xiang Suoshu PLC, which is sent, to live
The position signal of plug；The proportional reversing valve is on the oil circuit between the tested solution press pump and the first oil pocket, Yi Jisuo
It states on the oil circuit between the first oil pocket and the first fuel tank, the order control for receiving the PLC is switched on or switched off the tested solution
The oil circuit between oil circuit and first oil pocket and first fuel tank between press pump and the first oil pocket, and control in oil circuit
The size of oil mass.
3. according to claim 1 or double fuel tank voltage-dropping type energy regenerating hydraulic test beds, feature described in 2 any one exist
In: the inside of the decompression cylinder is T-type cavity, and the piston is T-type piston.
4. double fuel tank voltage-dropping type energy regenerating hydraulic test beds according to claim 3, it is characterised in that: the decompression cylinder
Inside is additionally provided with sealing ring, and described sealing ring one end is fixed on the decompression inside wall of cylinder, and the other end is living around the T-type
Plug；The T-type piston includes wide head and narrow waist, and the cross-sectional area on the width head is greater than the cross section of the narrow waist
Product；It is formed between the sealing ring and wide head and epicoele is isolated, the isolation epicoele is connected by oil pipe and the second fuel tank；It is described
It is formed between sealing ring and narrow waist and cavity of resorption is isolated, the isolation cavity of resorption is connected by oil pipe and the first fuel tank.
5. according to claim 1, double fuel tank voltage-dropping type energy regenerating hydraulic test beds, feature described in 2 or 4 any one exist
In: the pressure unit further includes the first accumulator, the second accumulator and third accumulator；First accumulator is located at described
Between non-test hydraulic pump and the second oil pocket；Second accumulator is between second oil pocket and hydraulic motor；It is described
Third accumulator receives the oil liquid from tested solution press pump, inputs oil to first oil pocket by the proportional reversing valve
Liquid.
6. double fuel tank voltage-dropping type energy regenerating hydraulic test beds according to claim 5, it is characterised in that: the decompression is single
Member further includes several first check valves and several second one-way valves and third check valve and the 4th check valve；Described first
Check valve between the first accumulator and the second oil pocket, the second one-way valve be located at the second oil pocket and the second accumulator it
Between；The quantity of first check valve and second one-way valve is identical as the decompression quantity of cylinder, and each decompression cylinder is corresponding
One the first check valve and a second one-way valve, several described first check valves are arranged in parallel, several described second lists
It is arranged in parallel to valve；The third check valve is between tested solution press pump and third accumulator, the 4th check valve position
Between non-test hydraulic pump and the first accumulator.
7. double fuel tank voltage-dropping type energy regenerating hydraulic test beds according to claim 6, it is characterised in that: the decompression is single
Member further includes the 5th check valve, and the 5th check valve is between non-test hydraulic pump and the second accumulator.
8. double fuel tank voltage-dropping type energy regenerating hydraulic test beds, feature described according to claim 6 or 7 any one exist
In: it further include first filter and the second filter, the first filter is located at the tested solution press pump and third is unidirectional
Between valve, second filter is between second accumulator and hydraulic motor.
9. double fuel tank voltage-dropping type energy regenerating hydraulic test beds according to claim 8, it is characterised in that: further include first
The first filter is connected in overflow valve, the side of first overflow valve, and first fuel tank is connected in the other side；The decompression
Unit further includes the second overflow valve, and second filter is connected in the side of second overflow valve, and the other side connects described the
Two fuel tanks.
10. double fuel tank voltage-dropping type energy regenerating hydraulic test beds, feature according to claim 4 or 9 any one exist
In: the sealing ring and the decompression inside wall of cylinder are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821742815.7U CN209278258U (en) | 2018-10-25 | 2018-10-25 | A kind of double fuel tank voltage-dropping type energy regenerating hydraulic test beds |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821742815.7U CN209278258U (en) | 2018-10-25 | 2018-10-25 | A kind of double fuel tank voltage-dropping type energy regenerating hydraulic test beds |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209278258U true CN209278258U (en) | 2019-08-20 |
Family
ID=67599335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821742815.7U Withdrawn - After Issue CN209278258U (en) | 2018-10-25 | 2018-10-25 | A kind of double fuel tank voltage-dropping type energy regenerating hydraulic test beds |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209278258U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026906A (en) * | 2018-10-25 | 2018-12-18 | 广东天恒液压机械有限公司 | A kind of double fuel tank voltage-dropping type energy regenerating hydraulic test beds |
| CN113586538A (en) * | 2021-08-02 | 2021-11-02 | 中机试验装备股份有限公司 | Energy-saving dual-drive coupling dynamic actuator |
-
2018
- 2018-10-25 CN CN201821742815.7U patent/CN209278258U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026906A (en) * | 2018-10-25 | 2018-12-18 | 广东天恒液压机械有限公司 | A kind of double fuel tank voltage-dropping type energy regenerating hydraulic test beds |
| CN109026906B (en) * | 2018-10-25 | 2023-11-24 | 广东天恒液压机械有限公司 | Double-oil tank pressure-reducing type energy recovery hydraulic test bench |
| CN113586538A (en) * | 2021-08-02 | 2021-11-02 | 中机试验装备股份有限公司 | Energy-saving dual-drive coupling dynamic actuator |
| CN113586538B (en) * | 2021-08-02 | 2023-10-24 | 中机试验装备股份有限公司 | Energy-saving dual-drive coupling dynamic actuator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209278258U (en) | A kind of double fuel tank voltage-dropping type energy regenerating hydraulic test beds | |
| CN110513097A (en) | A kind of electricity drives the wellsite system of pressure break | |
| CN110124574A (en) | A kind of multi-functional mixing device | |
| CN105757015A (en) | Hydraulic driven type non-intermittent supercharging device | |
| CN107980081A (en) | For manufacturing the device for the mixture being made of the plastic fraction of at least one gas and at least one liquid | |
| CN104612793A (en) | Air pressure type urea metering spraying system easy to control | |
| CN101576069B (en) | Arrangement for dispensing color paste, apparatus and method | |
| CN109026906A (en) | A kind of double fuel tank voltage-dropping type energy regenerating hydraulic test beds | |
| CN105324188A (en) | Washer | |
| CN202538447U (en) | Vertical press filter hydraulic system | |
| CN2169722Y (en) | High effect energy saving pressure increasing device | |
| CN105705743B (en) | The booster excess power retracting device of internal combustion engine | |
| CN208503121U (en) | Synchronous lifting hydraulic system | |
| CN211692395U (en) | Novel super large discharge capacity superhigh pressure well cementation equipment | |
| CN108437775A (en) | A kind of parallel connection type oil electric mixed dynamic towed concrete pump | |
| CN212672128U (en) | Pulse pump station | |
| CN102937074A (en) | Continuous material feeding system and control method and elevating platform fire truck thereof | |
| CN101328874B (en) | Hydraulic slurry pump | |
| CN107387473A (en) | Tandem piggybacking formula multipath hydraulic control device | |
| CN207261338U (en) | Tandem piggybacking formula multipath hydraulic control device | |
| CN2644245Y (en) | Hydro-peening device for windscreen of automobile | |
| CN102309830B (en) | High-pressure water conveying system and water supply device | |
| CN203161688U (en) | Hydraulic system for mixer truck and mixer truck with hydraulic system | |
| CN102168800A (en) | Dual-point oil supply oil feeder and oil feeder integration | |
| CN106151868A (en) | Fluid pressure type air entraining substation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190820 Effective date of abandoning: 20231124 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20190820 Effective date of abandoning: 20231124 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |