CN107575426A - Oxygen mix natural gas power pipe network big diameter elbow machine hydraulic system - Google Patents
Oxygen mix natural gas power pipe network big diameter elbow machine hydraulic system Download PDFInfo
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- CN107575426A CN107575426A CN201710858179.8A CN201710858179A CN107575426A CN 107575426 A CN107575426 A CN 107575426A CN 201710858179 A CN201710858179 A CN 201710858179A CN 107575426 A CN107575426 A CN 107575426A
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 24
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 13
- 239000001301 oxygen Substances 0.000 title claims abstract description 13
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 13
- 239000003345 natural gas Substances 0.000 title claims abstract description 12
- 238000005452 bending Methods 0.000 claims abstract description 32
- 239000012530 fluid Substances 0.000 claims description 36
- 239000002828 fuel tank Substances 0.000 claims description 19
- 239000007788 liquid Substances 0.000 claims description 8
- 230000008676 import Effects 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 abstract description 48
- 239000010959 steel Substances 0.000 abstract description 48
- 239000000203 mixture Substances 0.000 abstract description 13
- 238000010276 construction Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 176
- 230000009471 action Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000010720 hydraulic oil Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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- Forklifts And Lifting Vehicles (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
Oxygen mix natural gas power pipe network big diameter elbow machine hydraulic system disclosed by the invention, it is divided into by hydraulic system bend pipe using function：1) hoist engine and inner tube of a tyre walking loop, including elevator hydraulic motor, inner tube of a tyre hydraulic motor Liang Tiao branches oil inlet and oil return tube loop, the left and right walking in steel pipe with the inner tube of a tyre is moved left and right in bending machine for steel pipe；2) inner tube of a tyre cylinder, clamping cylinder and voussoir cylinder loop, including three inner tube of a tyre cylinder, clamping cylinder, voussoir cylinder branch's oil inlet and oil return tube loops, for the support during bend pipe to steel pipe inner wall, the clamping of steel pipe one end and release, the lifting of steel pipe and decentralization；3) master cylinder and lift cylinder loop, including four lift cylinders, six master cylinders, one branch's oil inlet and oil return tube loop, for making outer wall of steel pipe be close to upper tyre surface and applying moment of flexure to the steel pipe other end, steel pipe is made to produce plastic deformation.Advantage is that simple in construction, working stability, system failure rate are low.
Description
Technical field
The present invention relates to oxygen mix natural gas power pipe network technology field, more particularly to a kind of oxygen mix are naturally pneumatic
Solenoid net big diameter elbow machine hydraulic system.
Background technology
Bending machine is in the oxygen mix natural gas power pipe-networks engineering of large-scale long range, for changing pipeline direction
A kind of plant equipment, it is possible to achieve field condition bend pipe operation.Field condition construction operation, site contour landforms are complicated, power
The laying of pipe network pipeline need to determine according to the basic trend of landform, use big diameter elbow machine in pipeline construction often.But mesh
It is preceding unreasonable design structure, complicated, job insecurity, the system failure to be present with the Hydraulic Power Transmission System of bend pipe machine equipment
The shortcomings of rate is high, the phenomenon for the damage of bend pipe finished product occur is tended to, has a strong impact on the life of oxygen mix natural gas power pipe network
Produce efficiency.In addition, no less than three workers assistance bend pipe operation on the scene, and bending simultaneously is needed during angle pipe equipment bend pipe operation
Each step is by the manually operated completion of worker during tubing, and during each bending, worker is required for the device flag that stops
The crooked place of steel pipe, and the angle that steel pipe is bent every time is come by the data reduction of manual measurement, these operation streams
Journey has all aggravated the workload of worker and has added the error rate of bend pipe finished product, and wastes time and energy, operator's labor intensity
It is larger.For the relatively low present situation of current big diameter elbow machine automaticity, inventor have developed the hydraulic pressure of big diameter elbow machine
System, realize the hydraulic pressure automation of big diameter elbow process.
The content of the invention
For above the deficiencies in the prior art, it is an object of the invention to provide a kind of simple in construction, working stability, system event
Barrier rate it is low be used for oxygen mix natural gas power pipe network big diameter elbow machine hydraulic system, to solve in above-mentioned background technology
The problem of proposition.
To achieve the above object, the present invention is realized using following technical scheme：
Oxygen mix natural gas power pipe network big diameter elbow machine hydraulic system, it includes fuel tank, and fuel tank is provided with liquid
Position liquid thermometer, air cleaner and temperature sensor, fuel tank is interior to be provided with tubular heater, in addition to hydraulic pump, hydraulic pressure pump inlet
The oil pipe of connection is provided with oil filter, and the oil pipe tail end of hydraulic pressure pump inlet connection is placed in fuel tank, the oil of hydraulic pump outlet connection
The import of the other end and check valve of pipe is connected, and one-way valved outlet is connected with pressure piping filter inlet by oil pipe, pressure
In-line filter outlet is connected with oil inlet pipe, and oil inlet pipe is provided with six branch's oil inlet pipes, i.e. first branch's oil inlet pipe, second
Individual branch's oil inlet pipe, the 3rd branch's oil inlet pipe, the 4th branch's oil inlet pipe, the 5th branch's oil inlet pipe, the 6th branch enter
Oil pipe；Also include an aerial cooler, the other end of oil pipe of aerial cooler outlet connection is connected with the entrance of filter
Connect, the end of the oil pipe of filter outlet connection is placed in fuel tank, and air cooler air inlet is connected with oil return pipe, described oil return
Pipe is provided with six branch's oil return pipes, i.e. first branch's oil return pipe, second branch's oil return pipe, the 3rd branch's oil return pipe,
4th branch's oil return pipe, the 5th branch's oil return pipe, the 6th branch's oil return pipe；Also include six 3-position 4-way electromagnetic switch
Valve, ten one-way throttle valves, a hydraulic control one-way valve, an one way sequence valve, in addition to overflow pipe, one end of overflow pipe is with entering
Oil pipe is connected, and the other end of overflow pipe is placed in fuel tank, and overflow pipe is provided with electromagnetic relief valve；
First described branch's oil inlet pipe and the other end of first branch's oil return pipe respectively with first 3-position 4-way
Two hydraulic fluid ports of solenoid directional control valve are connected, and an oil is respectively connected with the another two hydraulic fluid port of first three-position four-way electromagnetic directional valve
Manage, the other end of an oil pipe in this two oil pipes is connected with first one-way throttle valve, another in this two oil pipes
The other end of oil pipe is connected with second one-way throttle valve, first one-way throttle valve inner tube of a tyre hydraulic pressure with two bending machines respectively
Connected between one chamber of motor by oil pipe, second one-way throttle valve respectively with the inner tube of a tyre hydraulic motor of two bending machines
Connected between another chamber also by oil pipe；
Second described branch's oil inlet pipe and the other end of second branch's oil return pipe respectively with second 3-position 4-way
Two hydraulic fluid ports of solenoid directional control valve are connected, and an oil is respectively connected with the another two hydraulic fluid port of second three-position four-way electromagnetic directional valve
Manage, the other end of an oil pipe in this two oil pipes is connected with the 3rd one-way throttle valve, another in this two oil pipes
The other end of oil pipe is connected with the 4th one-way throttle valve, and the one of the elevator hydraulic motor of the 3rd one-way throttle valve and bending machine
Connected by oil pipe between individual chamber, also led between another chamber of the elevator hydraulic motor of the 4th one-way throttle valve and bending machine
Cross oil pipe connection；
The 3rd described branch's oil inlet pipe and the other end of the 3rd branch's oil return pipe respectively with the 3rd 3-position 4-way
Two hydraulic fluid ports of solenoid directional control valve are connected, and an oil is respectively connected with the another two hydraulic fluid port of the 3rd three-position four-way electromagnetic directional valve
Manage, the other end of an oil pipe in this two oil pipes is connected with the 5th one-way throttle valve, another in this two oil pipes
The other end of oil pipe is connected with the 6th one-way throttle valve, the rodless cavity of the inner tube of a tyre cylinder of the 5th one-way throttle valve and bending machine it
Between connected by oil pipe, connected between the 6th one-way throttle valve and the rod chamber of the inner tube of a tyre cylinder of bending machine also by oil pipe；
The 4th described branch's oil inlet pipe and the other end of the 4th branch's oil return pipe respectively with the 4th 3-position 4-way
Two hydraulic fluid ports of solenoid directional control valve are connected, and an oil is respectively connected with the another two hydraulic fluid port of the 4th three-position four-way electromagnetic directional valve
Manage, the other end of an oil pipe in this two oil pipes is connected with the 7th one-way throttle valve, another in this two oil pipes
The other end of oil pipe is connected with the 8th one-way throttle valve, the rodless cavity of the clamping cylinder of the 7th one-way throttle valve and bending machine it
Between connected by oil pipe, the 8th connects between one-way throttle valve and the rod chamber of the clamping cylinder of bending machine also by oil pipe；
The 5th described branch's oil inlet pipe and the other end of the 5th branch's oil return pipe respectively with the 5th 3-position 4-way
Two hydraulic fluid ports of solenoid directional control valve are connected, and an oil is respectively connected with the another two hydraulic fluid port of the 5th three-position four-way electromagnetic directional valve
Manage, the other end of an oil pipe in this two oil pipes is connected with the 9th one-way throttle valve, another in this two oil pipes
The other end of oil pipe is connected with the tenth one-way throttle valve, the input of the other end and hydraulic control one-way valve of the 9th one-way throttle valve
End is connected by oil pipe, is connected between the output end of hydraulic control one-way valve and the rodless cavity of the voussoir cylinder of bending machine by oil pipe, the
Connected between ten one-way throttle valves and the rod chamber of the voussoir cylinder of bending machine also by oil pipe, wherein, the control of hydraulic control one-way valve
Oil pipe between liquefaction road K and one-way throttle valve, voussoir cylinder rod chamber connects；
The 6th described branch's oil inlet pipe and the other end of the 6th branch's oil return pipe respectively with the 6th 3-position 4-way
Two hydraulic fluid ports of solenoid directional control valve are connected, and an oil is respectively connected with the another two hydraulic fluid port of the 6th three-position four-way electromagnetic directional valve
Pipe, the other end of an oil pipe in this two oil pipes respectively between the rodless cavity of four lift cylinders, six master cylinders have
Connected between rod cavity, the other end of another oil pipe in this two oil pipes and respectively between the rod chamber of four lift cylinders,
Connected between the rodless cavity of six master cylinders, wherein, another oil pipe between four lift cylinder rod chambers and connect oil pipe
Oil pipe series connection between six master cylinder rodless cavities and between the oil pipe that is connected has an one way sequence valve.
Beneficial effect：Oxygen mix natural gas power pipe network big diameter elbow machine hydraulic system disclosed by the invention, is pressed
Hydraulic system bend pipe is divided into using function：1) hoist engine and inner tube of a tyre walking loop, including elevator hydraulic motor, inner tube of a tyre hydraulic motor
Liang Tiao branches oil inlet and oil return tube loop, the left and right walking in steel pipe with the inner tube of a tyre is moved left and right in bending machine for steel pipe；2) inner tube of a tyre
Cylinder, clamping cylinder and voussoir cylinder loop, including three inner tube of a tyre cylinder, clamping cylinder, voussoir cylinder branch's oil inlet and oil return tube loops, in bend pipe
During support, the clamping and release, the lifting of steel pipe and decentralization of steel pipe one end to steel pipe inner wall；3) master cylinder and lift cylinder
Loop, including four lift cylinders, six master cylinders, one branch's oil inlet and oil return tube loop, for making outer wall of steel pipe be close to upper tyre surface simultaneously
Moment of flexure is applied to the steel pipe other end, steel pipe is produced plastic deformation.Advantage is that simple in construction, working stability, system failure rate are low.
Brief description of the drawings
Fig. 1 is the bend pipe principle schematic of the present invention；
Fig. 2 is the composition structural representation of the present invention.
Embodiment
The present invention is described in detail with reference to Figure of description, it should be noted that the implementation of the present invention is unlimited
In following embodiment.
As shown in figure 1, be the present invention bend pipe principle schematic, the oxygen mix natural gas power pipe network heavy caliber
Bend pipe machine hydraulic system, the operation principle of bending machine are to receive and handle the Data Concurrent of each sensor by programmable controller
Go out corresponding instruction, control the break-make of each valve body electromagnet of hydraulic system, realize movement of the bend pipe machine equipment to steel pipe, fixation and
Bend pipe etc. acts, and its bend pipe process can be divided into four parts：Send pipe → positioning → bend pipe → reset.
1) pipe is sent：Large-diameter steel pipe tubing to be curved is put into bending machine by worker by sideboom tractor from fixture one end, the inner tube of a tyre
Pierce simultaneously in steel pipe, steel pipe starts bend pipe after being placed into suitable position, pulls steel pipe to be moved to fixture one end by hoist engine
It is dynamic, stop sending pipe to complete after being moved to 300mm.
2) position：Positioning is the set-up procedure before bend pipe, prevents steel pipe to be moved.The inner tube of a tyre is in steel pipe to master cylinder one
End walking, is moved to immediately below tire.Then inner tube of a tyre tensioning apparatus supports steel pipe inner wall, it is therefore an objective to prevents that steel pipe goes out during bend pipe
Pipe phenomenon is now suppressed, after completing tensioning.Voussoir cylinder horizontally outward stretches out lifting steel pipe height, one end of clamp steel pipe, purpose
It is to prevent steel pipe from the rotation of itself occurs, positioning is completed.
3) bend pipe：Lift cylinder drives the left end of lower tire to move upwards, lifting tubing height, edge on steel pipe is close to tire
Face.The lower tire right-hand member of master cylinder lifting, rises the right-hand member of steel pipe.Fulcrum is played by fixture and upper tire, master cylinder applies curved
Square, it is plastically deformed steel pipe, steel pipe is bent out certain angle, and bend pipe is completed.
4) reset：After bend pipe terminates, each hydraulic cylinder is by reverse order successively homing, action before starting to repeat,
Aforesaid operations circulation is carried out, until steel pipe reaches total bend pipe angle requirement.
As shown in Fig. 2 be the present invention composition structural representation, the oxygen mix natural gas power pipe network heavy caliber
Bend pipe machine hydraulic system, it includes fuel tank 1, and fuel tank is provided with liquid level liquid thermometer 35, air cleaner 33 and temperature sensor 32,
Tubular heater 34, in addition to hydraulic pump 3 are provided with fuel tank, the oil pipe of hydraulic pressure pump inlet connection is provided with oil filter 2, hydraulic pump
The oil pipe tail end of import connection is placed in fuel tank, and the other end of the oil pipe of hydraulic pump outlet connection is connected with the import of check valve 4,
One-way valved outlet is connected with the import of pressure piping filter 5 by oil pipe, and pressure piping filter outlet is connected with oil inlet pipe 27,
Oil inlet pipe 27 is provided with six branch's oil inlet pipes, i.e. first branch's oil inlet pipe, 27-1, second branch's oil inlet pipe 27-2,
Three branch's oil inlet pipes 27-3, the 4th branch's oil inlet pipe 27-4, the 5th branch's oil inlet pipe 27-5, the 6th branch enter
Oil pipe 27-6；Also include an aerial cooler 30, the other end and the filter 31 of the oil pipe of aerial cooler outlet connection
Entrance is connected, and the end of the oil pipe of the outlet of filter 31 connection is placed in fuel tank, and air cooler air inlet is connected with oil return pipe
28, described oil return pipe is provided with six branch's oil return pipes, i.e. first branch's oil return pipe, 28-1, second branch's oil return pipe
28-2, the 3rd branch's oil return pipes 28-3, the 4th branch's oil return pipe 28-4, the 5th branch's oil return pipe the 28-5, the 6th
Individual branch's oil return pipe 28-6；Also include six three-position four-way electromagnetic directional valves, ten one-way throttle valves, a hydraulic control one-way valve
18th, an one way sequence valve 26, in addition to overflow pipe 29, one end of overflow pipe are connected with oil inlet pipe 27, overflow pipe it is another
End is placed in fuel tank, and overflow pipe is provided with electromagnetic relief valve 6；
First described branch's oil inlet pipe 27-1 and the other end of first branch's oil return pipe 28-1 are respectively with first
Individual three-position four-way electromagnetic directional valve 7-1 two hydraulic fluid ports connection, first three-position four-way electromagnetic directional valve 7-1 another two hydraulic fluid port
On be respectively connected with an oil pipe, the other end of an oil pipe in this two oil pipes is connected with first one-way throttle valve 8, and this two
The other end of another oil pipe in root oil pipe is connected with second one-way throttle valve 9, and first one-way throttle valve 8 is respectively with two
Connected between one chamber of the inner tube of a tyre hydraulic motor 19 of individual bending machine by oil pipe, second one-way throttle valve 9 respectively with two
Connected between another chamber of the inner tube of a tyre hydraulic motor 19 of bending machine also by oil pipe；
Second described branch's oil inlet pipe 27-2 and the other end of second branch's oil return pipe 28-2 are respectively with second
Individual three-position four-way electromagnetic directional valve 7-2 two hydraulic fluid ports connection, second three-position four-way electromagnetic directional valve 7-2 another two hydraulic fluid port
On be respectively connected with an oil pipe, the other end of an oil pipe in this two oil pipes is connected with the 3rd one-way throttle valve 10, this
The other end of another oil pipe in two oil pipes is connected with the 4th one-way throttle valve 11, the 3rd one-way throttle valve 10 with it is curved
Connected between one chamber of the elevator hydraulic motor 20 of pipe machine by oil pipe, the elevator of the 4th one-way throttle valve 11 and bending machine
Connected between another chamber of hydraulic motor 20 also by oil pipe；
The 3rd described branch's oil inlet pipe 27-3 and the other end of the 3rd branch's oil return pipe 28-3 are respectively with the 3rd
Individual three-position four-way electromagnetic directional valve 7-3 two hydraulic fluid ports connection, the 3rd three-position four-way electromagnetic directional valve 7-3 another two hydraulic fluid port
On be respectively connected with an oil pipe, the other end of an oil pipe in this two oil pipes is connected with the 5th one-way throttle valve 12, this
The other end of another oil pipe in two oil pipes is connected with the 6th one-way throttle valve 13, the 5th one-way throttle valve 12 with it is curved
Connected between the rodless cavity of the inner tube of a tyre cylinder 21 of pipe machine by oil pipe, the 6th one-way throttle valve 13 and the inner tube of a tyre cylinder 21 of bending machine
Connected between rod chamber also by oil pipe；
The 4th described branch's oil inlet pipe 27-4 and the other end of the 4th branch's oil return pipe 28-4 are respectively with the 4th
Individual three-position four-way electromagnetic directional valve 7-4 two hydraulic fluid ports connection, the 4th three-position four-way electromagnetic directional valve 7-4 another two hydraulic fluid port
On be respectively connected with an oil pipe, the other end of an oil pipe in this two oil pipes is connected with the 7th one-way throttle valve 14, this
The other end of another oil pipe in two oil pipes is connected with the 8th one-way throttle valve 15, the 7th one-way throttle valve 14 with it is curved
Connected between the rodless cavity of the clamping cylinder 22 of pipe machine by oil pipe, the 8th one-way throttle valve 15 and the clamping cylinder 22 of bending machine
Connected between rod chamber also by oil pipe；
The 5th described branch's oil inlet pipe 27-5 and the other end of the 5th branch's oil return pipe 28-5 are respectively with the 5th
Individual three-position four-way electromagnetic directional valve 7-5 two hydraulic fluid ports connection, the 5th three-position four-way electromagnetic directional valve 7-5 another two hydraulic fluid port
On be respectively connected with an oil pipe, the other end of an oil pipe in this two oil pipes is connected with the 9th one-way throttle valve 16, this
The other end of another oil pipe in two oil pipes is connected with the tenth one-way throttle valve 17, the 9th one-way throttle valve 16 it is another
One end is connected with the input of hydraulic control one-way valve 18 by oil pipe, the output end of hydraulic control one-way valve 18 and the voussoir cylinder 23 of bending machine
Rodless cavity between connected by oil pipe, also lead between the rod chamber of the voussoir cylinder 23 of the tenth one-way throttle valve 17 and bending machine
Oil pipe connection is crossed, wherein, the oil between control oil circuit K and one-way throttle valve 17, the rod chamber of voussoir cylinder 23 of hydraulic control one-way valve 18
Pipe connects；
The 6th described branch's oil inlet pipe 27-6 and the other end of the 6th branch's oil return pipe 28-6 are respectively with the 6th
Individual three-position four-way electromagnetic directional valve 7-6 two hydraulic fluid ports connection, the 6th three-position four-way electromagnetic directional valve 7-6 another two hydraulic fluid port
On be respectively connected with an oil pipe, the other end of an oil pipe in this two oil pipes respectively with the rodless cavities of four lift cylinders 24 it
Between, connect between the rod chambers of six master cylinders 25, the other end of another oil pipe in this two oil pipes with respectively with four
Connected between the rod chamber of lift cylinder 24, between the rodless cavity of six master cylinders 25, wherein, another oil pipe is in four lift cylinders
Oil pipe series connection between 24 rod chambers and between the oil pipe and six rodless cavities of master cylinder 25 of connection and between the oil pipe of connection
There is an one way sequence valve 26.
Present hydraulic system operation principle：
Oil cylinder in bend pipe machine hydraulic system of the present invention selects double-acting type oil cylinder, and hydraulic motor selects radial ball piston formula
Hydraulic motor.Divided by hydraulic system bend pipe using function, hydraulic circuit of the present invention can be divided into：Hoist engine and interior tyre walking return
Road；Inner tube of a tyre cylinder, clamping cylinder and voussoir cylinder loop；Master cylinder and lift cylinder loop three parts.
1) hoist engine and inner tube of a tyre walking loop are made up of elevator hydraulic motor, inner tube of a tyre hydraulic motor loop, are respectively used to steel
Pipe moves left and right the left and right walking in steel pipe with the inner tube of a tyre in bending machine.Electromagnet YA4, YA14 are powered, and elevator hydraulic motor is just
Turn, windlass device can pull steel pipe to be moved to the left, and electromagnet YA5, YA14 are powered, the reversion of elevator hydraulic motor, hoist engine dress
Putting can pull steel pipe to move right.Electromagnet YA2, YA14 are powered, and inner tube of a tyre hydraulic motor rotates forward, and the inner tube of a tyre can walk to the left, electromagnetism
Iron YA3, YA14 are powered, and inner tube of a tyre hydraulic motor reversion, the inner tube of a tyre can walk to the right.
In hoist engine and inner tube of a tyre walking loop, relief circuit is formed using electromagnetic relief valve, when starting pumping plant engine,
Electromagnet YA1 is powered, and hydraulic pump unloading, can reduce energy loss, simplied system structure, plays pressure regulation, off-load smooth start
Effect.Other loop use stacked unidirectional throttle valve, can with the flow of bidirectional modulation hydraulic cylinder, during forward flow from unidirectionally
Valve action, during reverse flow from throttling valve action.
2) inner tube of a tyre cylinder, clamping cylinder and voussoir cylinder loop are made up of inner tube of a tyre cylinder, clamping cylinder, voussoir cylinder loop, are respectively used to
Clamping and release, the lifting of the steel pipe and decentralization of support, steel pipe one end during bend pipe to steel pipe inner wall.By controlling respectively
Inner tube of a tyre cylinder, clamping cylinder, voussoir cylinder loop three position four-way directional control valve magnet switching, realize tensioning apparatus, fixture and voussoir
It is flexible.Because voussoir cylinder needs prolonged thrust horizontally outward enough, so the reversal valve in voussoir cylinder loop is used instead
The three position four-way directional control valve of Y-shaped function, while add the locking loop of a hydraulic control one-way valve to carry out pressurize, reduce pressure damage
Lose, improve reliability of the equipment during bend pipe.
3) master cylinder and lift cylinder loop are made up of four lift cylinders, 24, six loops of master cylinder 25, are respectively used to make steel
Pipe outer wall is close to tyre surface and applies moment of flexure to the steel pipe other end, steel pipe is produced plastic deformation.Electromagnet YA13, YA14 lead to
Electricity, hydraulic oil enter lift cylinder rod chamber, and lift cylinder is shunk.When lift cylinder rod chamber pressure is more than the setting pressure of one way sequence valve
After force value, hydraulic oil opens one way sequence valve and enters master cylinder rodless cavity, and master cylinder stretches out.Electromagnet YA12, YA14 are powered, liquid
Force feed enters lift cylinder rodless cavity and master cylinder rod chamber, flows back to fuel tank through one way sequence valve, lift cylinder is stretched out, and master cylinder is simultaneously
Shrink return.Job order requirement first lifts bend pipe again to steel pipe and ensures there be certain carry in master cylinder and lift cylinder loop
Lift and moment of flexure, so in the loop, an one way sequence valve of being connected between lift cylinder and master cylinder.In lift cylinder hydraulic oil pressure
Power is not enough to complete the enhancing action of steel pipe before opening one way sequence valve, and as steel pipe and upper tyre surface are adjacent to, pressure is enough to beat
After driving sequence valve, master cylinder starts to lift, and plays fulcrum by fixture and upper tire, master cylinder applies the angle that moment of flexure reaches bend pipe
Degree requires.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (1)
1. oxygen mix natural gas power pipe network big diameter elbow machine hydraulic system, it includes fuel tank (1), and fuel tank is provided with liquid
Position liquid thermometer (35), air cleaner (33) and temperature sensor (32), fuel tank is interior to be provided with tubular heater (34), in addition to liquid
Press pump (3), the oil pipe of hydraulic pressure pump inlet connection are provided with oil filter (2), and the oil pipe tail end of hydraulic pressure pump inlet connection is placed in fuel tank
Interior, the other end of the oil pipe of hydraulic pump outlet connection is connected with the import of check valve (4), one-way valved outlet and pressure piping filtering
Device (5) import is connected by oil pipe；It is characterized in that：
Described pressure piping filter outlet is connected with oil inlet pipe (27), and oil inlet pipe (27) is provided with six branch's oil inlet pipes,
That is first branch's oil inlet pipe (27-1), second branch's oil inlet pipe (27-2), the 3rd branch's oil inlet pipe (27-3),
Four branch's oil inlet pipes (27-4), the 5th branch's oil inlet pipe (27-5), the 6th branch's oil inlet pipe (27-6)；Also include
One aerial cooler (30), the other end of the oil pipe of aerial cooler outlet connection are connected with the entrance of filter (31),
The end of the oil pipe of filter (31) outlet connection is placed in fuel tank, and air cooler air inlet is connected with oil return pipe (28), described
Oil return pipe be provided with six branch's oil return pipes, i.e. first branch's oil return pipe (28-1), second branch's oil return pipe (28-
2), the 3rd branch's oil return pipe (28-3), the 4th branch's oil return pipe (28-4), the 5th branch's oil return pipe (28-5),
Six branch's oil return pipes (28-6)；Also include six three-position four-way electromagnetic directional valves, ten one-way throttle valves, a hydraulic control list
To valve (18), an one way sequence valve (26), in addition to overflow pipe (290, one end of overflow pipe is connected with oil inlet pipe (27),
The other end of overflow pipe is placed in fuel tank, and overflow pipe is provided with electromagnetic relief valve (6)；
First described branch's oil inlet pipe (27-1) and the other end of first branch's oil return pipe (28-1) are respectively with first
Two hydraulic fluid ports connection of individual three-position four-way electromagnetic directional valve (7-1), the another two of first three-position four-way electromagnetic directional valve (7-1)
An oil pipe is respectively connected with hydraulic fluid port, the other end of an oil pipe in this two oil pipes and first one-way throttle valve (8) are even
Connect, the other end of another oil pipe in this two oil pipes is connected with second one-way throttle valve (9), first one-way throttle valve
(8) connected respectively between a chamber of the inner tube of a tyre hydraulic motor (19) of two bending machines by oil pipe, second one-way throttle
Valve (9) connects between another chamber of the inner tube of a tyre hydraulic motor (19) of two bending machines also by oil pipe respectively；
Second described branch's oil inlet pipe (27-2) and the other end of second branch's oil return pipe (28-2) are respectively with second
Two hydraulic fluid ports connection of individual three-position four-way electromagnetic directional valve (7-2), the another two of second three-position four-way electromagnetic directional valve (7-2)
An oil pipe is respectively connected with hydraulic fluid port, the other end of an oil pipe in this two oil pipes and the 3rd one-way throttle valve (10) are even
Connect, the other end of another oil pipe in this two oil pipes is connected with the 4th one-way throttle valve (11), the 3rd one-way throttle
Connected between valve (10) and a chamber of the elevator hydraulic motor (20) of bending machine by oil pipe, the 4th one-way throttle valve (11)
(connected with the elevator hydraulic motor of bending machine between 200 another chamber also by oil pipe；
The 3rd described branch's oil inlet pipe (27-3) and the other end of the 3rd branch's oil return pipe (28-3) are respectively with the 3rd
Two hydraulic fluid ports connection of individual three-position four-way electromagnetic directional valve (7-3), the another two of the 3rd three-position four-way electromagnetic directional valve (7-3)
An oil pipe is respectively connected with hydraulic fluid port, the other end of an oil pipe in this two oil pipes and the 5th one-way throttle valve (12) are even
Connect, the other end of another oil pipe in this two oil pipes is connected with the 6th one-way throttle valve (13), the 5th one-way throttle
Connected between valve (12) and the rodless cavity of the inner tube of a tyre cylinder (21) of bending machine by oil pipe, the 6th one-way throttle valve (13) and bend pipe
Connected between the rod chamber of the inner tube of a tyre cylinder (21) of machine also by oil pipe；
The 4th described branch's oil inlet pipe (27-4) and the other end of the 4th branch's oil return pipe (28-4) are respectively with the 4th
Two hydraulic fluid ports connection of individual three-position four-way electromagnetic directional valve (7-4), the another two of the 4th three-position four-way electromagnetic directional valve (7-4)
An oil pipe is respectively connected with hydraulic fluid port, the other end of an oil pipe in this two oil pipes and the 7th one-way throttle valve (14) are even
Connect, the other end of another oil pipe in this two oil pipes is connected with the 8th one-way throttle valve (15), the 7th one-way throttle
Connected between valve (14) and the rodless cavity of the clamping cylinder (22) of bending machine by oil pipe, the 8th one-way throttle valve (15) and bend pipe
Connected between the rod chamber of the clamping cylinder (22) of machine also by oil pipe；
The 5th described branch's oil inlet pipe (27-5) and the other end of the 5th branch's oil return pipe (28-5) are respectively with the 5th
Two hydraulic fluid ports connection of individual three-position four-way electromagnetic directional valve (7-5), the another two of the 5th three-position four-way electromagnetic directional valve (7-5)
An oil pipe is respectively connected with hydraulic fluid port, the other end of an oil pipe in this two oil pipes and the 9th one-way throttle valve (16) are even
Connect, the other end of another oil pipe in this two oil pipes is connected with the tenth one-way throttle valve (17), the 9th one-way throttle
The other end of valve (16) is connected with the input of hydraulic control one-way valve (18) by oil pipe, the output end of hydraulic control one-way valve (18) with it is curved
Connected between the rodless cavity of the voussoir cylinder (23) of pipe machine by oil pipe, the tenth one-way throttle valve (17) and the voussoir cylinder of bending machine
(23) connected between rod chamber also by oil pipe, wherein, the control oil circuit K and one-way throttle valve of hydraulic control one-way valve (18)
(17), the oil pipe connection between voussoir cylinder (23) rod chamber；
The 6th described branch's oil inlet pipe (27-6) and the other end of the 6th branch's oil return pipe (28-6) are respectively with the 6th
Two hydraulic fluid ports connection of individual three-position four-way electromagnetic directional valve (7-6), the another two of the 6th three-position four-way electromagnetic directional valve (7-6)
An oil pipe is respectively connected with hydraulic fluid port, the other end of an oil pipe in this two oil pipes nothing with four lift cylinders (24) respectively
Connected between rod cavity, between the rod chamber of six master cylinders (25), the other end of another oil pipe in this two oil pipes with point
It is connected not between the rod chamber of four lift cylinders (24), between the rodless cavity of six master cylinders (25), wherein, another oil pipe
Between four lift cylinder (24) rod chambers and between the oil pipe and six master cylinder (25) rodless cavities that connect and the oil pipe that is connected
Between oil pipe series connection have an one way sequence valve (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710858179.8A CN107575426B (en) | 2017-09-21 | 2017-09-21 | Hydraulic system of large-caliber pipe bending machine for oxygen mixed natural gas power pipe network |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710858179.8A CN107575426B (en) | 2017-09-21 | 2017-09-21 | Hydraulic system of large-caliber pipe bending machine for oxygen mixed natural gas power pipe network |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111271345A (en) * | 2020-02-27 | 2020-06-12 | 丰铁机械(苏州)有限公司 | A hydraulic oil circuit of a rotary platform |
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| CN107575426B (en) | 2023-09-15 |
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