CN108397432B - A kind of blast furnace air machine hydraulic system - Google Patents
A kind of blast furnace air machine hydraulic system Download PDFInfo
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- CN108397432B CN108397432B CN201810164171.6A CN201810164171A CN108397432B CN 108397432 B CN108397432 B CN 108397432B CN 201810164171 A CN201810164171 A CN 201810164171A CN 108397432 B CN108397432 B CN 108397432B
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- valve
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- fueller
- connecting pipe
- fuel tank
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/042—Controlling the temperature of the fluid
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a kind of blast furnace air machine hydraulic systems, belong to large-scale rotating machinery technical field.The blast furnace air machine hydraulic system includes: fuel tank；Main fueller is connected to fuel tank；Spare fueller is connected to fuel tank；Filter device first end is connected to main fueller and spare fueller；Connecting pipe first end is connected to filter device second end；Servo-cylinder is connected to connecting pipe second end；Accumulator apparatus is connected to connecting pipe；The chain pump detection device first end that opens is connected to connecting pipe, and second end is connected to fuel tank；Controller with it is chain open pump detection device and spare fueller connect；Wherein, controller receives the chain fuel injection pressure signal for opening pump detection device and sending, and sends enabling signal to spare fueller.Blast furnace air machine hydraulic system of the present invention can be under the operating condition for not influencing system oil pressure, and On line inspection emergency bearing oil pump starting state improves the safety of system.
Description
Technical field
The present invention relates to large-scale rotating machinery technical field, in particular to a kind of blast furnace air machine hydraulic system.
Background technique
Blast furnace blower is most important power-equipment in blast furnace process system, it is not only directly provided needed for blast furnace process
Oxygen, and provide overcome blast furnace stock column resistance needed for aerodynamic force.According to operation of blast furnace operating condition, need to adjust wind in due course
Measure wind pressure.For blower stator blade by hydraulic system SERVO CONTROL, used system is deposited at present can not check that oil pressure drops at runtime
Low emergency bearing oil pump can interlock open pump the case where.
Summary of the invention
The present invention provides a kind of blast furnace air machine hydraulic system, solves or part solves hydraulic system in the prior art
Depositing can not check that can oil pressure reduce emergency bearing oil pump and interlock the technical issues of opening pump at runtime.
In order to solve the above technical problems, including: fuel tank the present invention provides a kind of blast furnace air machine hydraulic system；Main fuel feeding
Device is connected to the fuel tank；Spare fueller is connected to the fuel tank；Filter device, first end and the main fuel feeding fill
It sets and spare fueller is connected to；Connecting pipe, first end are connected to the filter device second end；Servo-cylinder, and it is described
The connection of connecting pipe second end；Accumulator apparatus is connected to the connecting pipe；It is chain to open pump detection device, first end and institute
Connecting pipe connection is stated, second end is connected to the fuel tank；Controller pumps detection device and spare fuel feeding dress with chain open
Set connection；Wherein, the controller receives the chain fuel injection pressure signal for opening pump detection device and sending, and fills to the spare fuel feeding
Set transmission enabling signal.
Further, the main fueller includes: main oil pump, is connected to by first entrance strainer with the fuel tank；It is single
To valve, first end is connected to the main oil pump；First shut-off valve is connected to the check valve second end；First safety valve, setting
Between the check valve and the main oil pump.
Further, the filter device includes: the first three-way switch valve, is filled with the main fueller and spare fuel feeding
Set connection；First filter, first end are connected to the first valve port of first three-way switch valve；Second filter, first end
It is connected to the second valve port of first three-way switch valve；Second three-way switch valve, third valve port and the first filter
Second end connection, the 4th valve port of second three-way switch valve are connected to the second end of second filter, and described second
Three-way switch valve is connected to the connecting pipe, and the first filter is connected by first throttle orifice plate and second filter
It is logical.
Further, pressure detector is provided in the connecting pipe, the pressure detector and the controller connect
It connects；Wherein, the controller receives the pressure signal that the pressure detector is sent, according to pressure signal to the spare fuel feeding
Device sends enabling signal.
Further, the accumulator apparatus includes: accumulator, is connected to the connecting pipe；Second shut-off valve, setting
Between the accumulator and the connecting pipe；Second safety valve, the connection of Yu Suoshu accumulator；Third shut-off valve, first end
It is connected to the accumulator, second end is connected to the fuel tank.
Further, the chain pump detection device that opens includes: detection pipeline, and first end is connected to the connecting pipe,
Second end is connected to the fuel tank；4th shut-off valve is arranged on the detection pipeline；Second restricting orifice is arranged described
It detects on pipeline；Pressure switch, be arranged between the 4th shut-off valve and second restricting orifice, the pressure switch with
The controller connection.
Further, blast furnace air machine hydraulic system of the present invention further include: differential pressure measuring device, simultaneously with the filter device
Connection, the differential pressure measuring device are connect with the controller.
Further, the differential pressure measuring device includes: differential pressure pick-up, in parallel with the filter device, the differential pressure
Sensor is connect with the controller.
Further, blast furnace air machine hydraulic system of the present invention further include: cooling device is connected to the fuel tank.
Further, the cooling device includes: cooling oil pump, is connected to by second entrance strainer with the fuel tank；Plate
Formula cooler, first end are connected to the cooling oil pump, and second end is connected to by the 5th shut-off valve with the fuel tank.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
Since main fueller is connected to fuel tank, spare fueller is connected to fuel tank, filter device first end and main confession
Oily device and the connection of spare fueller, so main fueller and the hydraulic oil of spare fueller conveying can pass through filtering
Device is filtered, since connecting pipe first end is connected to filter device second end, servo-cylinder and connecting pipe second end
Connection, accumulator apparatus are connected to connecting pipe, so connecting pipe can be watched backward by hydraulic oil is full of in accumulator apparatus
Take oil cylinder fuel feeding, accumulator apparatus one side absorption system pressure oscillation, the pressure on the other hand when system power loss, in accumulator
Power oil can complete the total travel operation of servo-cylinder, since the chain pump detection device first end that opens is connected to connecting pipe, second
End be connected to fuel tank, and controller pumps detection device and spare fueller and connect with chain open, and when on-line checking, opening is chain to be opened
It pumps detection device and carries out draining, controller receives the chain fuel injection pressure signal for opening pump detection device and sending, sends out to spare fueller
Enabling signal is sent, can be under the operating condition for not influencing system oil pressure, On line inspection emergency bearing oil pump starting state improves system
Safety.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of blast furnace air machine hydraulic system provided in an embodiment of the present invention.
Specific embodiment
Referring to Fig. 1, a kind of blast furnace air machine hydraulic system provided in an embodiment of the present invention includes: fuel tank, main fueller
1, spare fueller 2, filter device 3, connecting pipe 4, servo-cylinder 6, accumulator apparatus 5, it is chain open pump detection device 7 and
Controller.
The main fueller 1 is connected to the fuel tank.
The spare fueller 2 is connected to the fuel tank.
3 first end of filter device is connected to the main fueller 1 and spare fueller 2.
4 first end of connecting pipe is connected to 3 second end of filter device.
The servo-cylinder 6 is connected to 4 second end of connecting pipe.
The accumulator apparatus 5 is connected to the connecting pipe 4.
Chain pump 7 first end of detection device that opens is connected to the connecting pipe 4, and second end is connected to the fuel tank.
The controller with it is described it is chain open pump detection device 7 and spare fueller 2 connect.
Wherein, the controller receives the chain fuel injection pressure signal for opening pump detection device 7 and sending, to the spare fuel feeding
Device 2 sends enabling signal.
The application specific embodiment is since main fueller is connected to fuel tank, and spare fueller is connected to fuel tank, mistake
Filter device first end is connected to main fueller and spare fueller, so what main fueller and spare fueller conveyed
Hydraulic oil can be filtered by filter device, since connecting pipe first end is connected to filter device second end, servo oil
Cylinder is connected to connecting pipe second end, and accumulator apparatus is connected to connecting pipe, so connecting pipe can be by accumulator apparatus
Interior to be full of after hydraulic oil to servo-cylinder fuel feeding, on the other hand system is worked as in accumulator apparatus one side absorption system pressure oscillation
When power loss, the pressure oil in accumulator can complete the total travel operation of servo-cylinder, open pump detection device first end due to chain
Be connected to connecting pipe, second end is connected to fuel tank, controller with it is chain open pump detection device and spare fueller connect, In
When line detects, opens the chain pump detection device that opens and carry out draining, controller receives the chain oil pressure letter for opening pump detection device and sending
Number, enabling signal is sent to spare fueller, can be under the operating condition for not influencing system oil pressure, On line inspection emergency bearing oil pump opens
Dynamic state, improves the safety of system.
Think about it the structure for receiving main fueller.
The main fueller includes: main oil pump 1-1, check valve 1-3, the first shut-off valve 1-4 and the first safety valve 1-5.
The main oil pump 1-1 is connected to by first entrance strainer 1-2 with the fuel tank, and the oil in the fuel tank is passed through institute
It is smoked after stating first entrance filter screen 1-2 filtering.
The check valve 1-3 first end is connected to the main oil pump 1-1, and oil liquid is avoided to flow back.
The first shut-off valve 1-4 is connected to the check valve 1-3 second end.
The first safety valve 1-5 is arranged between the check valve 1-3 and the main oil pump 1-1, when oil pressure is excessively high, leads to
It crosses the first safety valve 1-5 and carries out pressure release.
The structure of filter device is discussed in detail.
The filter device includes: the first three-way switch valve 3-1, first filter 3-2, the second filter 3-3 and second
Three-way switch valve 3-4.
The first three-way switch valve 3-1 is connected to the main fueller 1 and spare fueller 2.
The first filter 3-2 first end is connected to the first valve port of the first three-way switch valve 3-1.
The second filter 3-3 first end is connected to the second valve port of the first three-way switch valve 3-1.
The second three-way switch valve 3-4 third valve port is connected to the second end of the first filter 3-2, and described second
The 4th valve port of three-way switch valve 3-4 is connected to the second end of the second filter 3-3, the second three-way switch valve 3-4
It is connected to the connecting pipe 4, the first filter 3-2 is connected by first throttle orifice plate 3-5 and the second filter 3-3
It is logical.
When normal filtration, the first three-way switch valve 3-1 is operated, the first valve of the first three-way switch valve 3-1 is made
Mouth is connected to the main fueller 1 and spare fueller 2, is operated the second three-way switch valve 3-4, is made the described 2nd 3
The third valve port of direction changeover valve 3-4 is connected to the connecting pipe 4, and hydraulic oil enters the first filter by the first valve port
3-2 enters the connecting pipe 4 by third valve port after filtering.The first filter 3-2 passes through the first throttle orifice plate
3-5 is connected to the second filter 3-3, and due to the effect of the first throttle orifice plate 3-5, oil pressure will not decline, can be at any time
It is switched to another group, so when the first filter 3-1 is filtered, by the hydraulic oil of the first filter 3-1
The second filter 3-3 can be entered by the first throttle orifice plate 3-5 and ball valve, make the second filter 3-3 always
Full of hydraulic oil, guarantee can be switched online at any time.
When first filter 3-2 blocking, make the second valve port of the first three-way switch valve 3-1 and the main confession
Oily device 1 and spare fueller 2 are connected to, and are operated the second three-way switch valve 3-1, are made the second three-way switch valve 3-4
The 4th valve port be connected to the connecting pipe 4, the hydraulic oil in the second filter 3-3 can directly pass through the second valve port
Into the second filter 3-3, since the second filter 3-3 is full of always hydraulic oil, so by the described 1st
The hydraulic oil of the second valve port conveying of direction changeover valve 3-1 does not have to be full of the second filter 3-3, avoids failure, leads to after filtering
The 4th valve port is crossed into the connecting pipe 4.
When being filtered using the second filter 3-3, the filter core of the first filter 3-2 can be carried out more
It changes, another group can be switched at any time, replacement filter core can also not shut down online.
When specifically used, can also as needed by the first filter 3-2 and the second filter 3-3 simultaneously
It comes into operation.
The structure of connecting pipe is discussed in detail.
Pressure detector is provided in the connecting pipe 4, the pressure detector is connect with the controller；Wherein,
The controller receives the pressure signal that the pressure detector is sent, and is sent according to pressure signal to the spare fueller
Enabling signal guarantees the oil pressure of system.
The structure of accumulator apparatus is discussed in detail.
The accumulator apparatus includes: accumulator 5-1, the second shut-off valve 5-2, the second safety valve 5-4 and third shut-off valve
5-3。
The accumulator 5-1 is connected to the connecting pipe 4, the accumulator 5-1 one side absorption system pressure oscillation,
On the other hand when system power loss, the pressure oil in the accumulator 5-1 can complete the total travel operation of oil cylinder.
The second shut-off valve 5-2 is arranged between the accumulator 5-1 and the connecting pipe 4.
The second safety valve 5-4 is connected in the accumulator 5-1.
The third shut-off valve 5-3 first end is connected to the accumulator 5-1, and second end is connected to the fuel tank.
Second shut-off valve 5-2 described in when normal operation is normally opened, and the third shut-off valve 5-3 is normally closed, accumulator and the company
It threads a pipe 4 connections, when the accumulator 5-1 nitrogen pressure reduces or needs to check, closing the second shut-off valve 5-2 will store
Energy device and isolation of system can carry out the accumulator 5-1 to survey pressure inflated with nitrogen after opening the third shut-off valve 5-3 pressure release,
Without shutdown inspection, it can carry out surveying pressure nitrogen charging online, avoid since the accumulator 5-1 pressure is low, in system power loss,
The accumulator 5-1 cannot provide the defect of urgent oil sources, realize not shut down and inspect periodically to the accumulator 5-1.
The chain structure for opening pump detection device is discussed in detail.
It is described it is chain open pump detection device include: detection pipeline 7-1, the 4th shut-off valve 7-2, the second restricting orifice 7-3 and
Pressure switch 7-4.
The detection pipeline 7-1 first end is connected to the connecting pipe 4, and second end is connected to the fuel tank.
The 4th shut-off valve 7-2 is arranged on the detection pipeline 7-1.
The second restricting orifice 7-3 is arranged on the detection pipeline 7-1.
The pressure switch 7-4 is arranged between the 4th shut-off valve 7-2 and the second restricting orifice 7-3, described
Pressure switch 7-4 is connect with the controller.
When opening the 4th shut-off valve 7-2 pressure release manually, due to the throttling action of the second restricting orifice 7-3,
System pressure can't reduce, and the pressure switch 7-4 is filled to controller fuel injection pressure signal, controller to the spare fuel feeding at this time
2 transmission enabling signals are set, pump situation is opened in the interlocking that can inspect periodically the spare fueller 2, can not influence system oil
Under the operating condition of pressure, spare 2 starting state of fueller, improves the safety of system described in On line inspection.
Blast furnace air machine hydraulic system of the present invention further include: differential pressure measuring device 8.
The differential pressure measuring device 8 is in parallel with the filter device 3, and the differential pressure measuring device 8 connects with the controller
It connects, the oil pressure of the hydraulic oil of the filter device is passed through in the detection of differential pressure measuring device 8.
The structure of differential pressure measuring device is discussed in detail.
The differential pressure measuring device includes: differential pressure pick-up 8-1.
The differential pressure pick-up 8-1 is in parallel with the filter device 3, and the differential pressure pick-up 8-1 and the controller connect
It connects.
A threshold value is set in the differential pressure pick-up 8-1, when 2 filter core pressure difference of filter device is more than threshold value, the pressure difference
Sensor 8-1 issues alarm signal to controller.
Blast furnace air machine hydraulic system of the present invention further include: cooling device 9.
The cooling device 9 is connected to the fuel tank, and the cooling device 9 is isolated with oil supply system, is dropped significantly
The risk of low oil system water inlet, energy-saving effect are obvious.
The structure of cooling device is discussed in detail.
The cooling device includes: cooling oil pump 9-1 and panel cooler 9-3.
The cooling oil pump 9-1 is connected to by second entrance strainer 9-2 with the fuel tank.
The panel cooler 9-3 first end is connected to the cooling oil pump 9-1, and second end passes through the 5th shut-off valve 9-4
It is connected to the fuel tank.
It when operation of blast furnace is stablized, does not need frequently to adjust air quantity, therefore entire oil temperature in hydraulic system increases slowly, this hair
It is bright that cooler is isolated from original oil supply system, the cooling device 9 has been separately provided, has reduced the board-like cooling
Influence of the device 9-3 failure to oil supply system also greatly reduces the risk of oil system water inlet, while energy-saving effect is obvious, works as oil
When box temperature degree is increased to 46 DEG C, pump signal is opened in the oil temperature sensor sending being arranged in fuel tank, and the cooling oil pump 9-1 starting is straight
It is out of service after dropping to 30 DEG C to oil temperature, when the panel cooler 9-3 in the event of failure, can directly remove and be overhauled, not
The operation of influence system.
In order to become apparent from the embodiment of the present invention, introduced from the application method of the embodiment of the present invention below.
System operate normally when, hydraulic oil along first entrance strainer 1-2, main oil pump 1-2, main oil pump 1-1, check valve 1-3,
First shut-off valve 1-4, filter device 3, connecting pipe 4 are delivered to accumulator 5-1, after hydraulic oil is full of in accumulator 5-1, liquid
Pressure oil enters servo-cylinder 6.
When system pressure increases, the second safety valve 5-4, which is opened, carries out pressure release, when the system pressure drops, connecting pipe 4
On be provided with pressure detector, pressure detector is connect with controller, controller receive pressure detector transmission pressure signal,
Enabling signal is sent to spare fueller 2 according to pressure signal, guarantees the oil pressure of system.
When opening the 4th shut-off valve 7-2 pressure release manually, due to the throttling action of the second restricting orifice 7-3, system pressure
It can't reduce, pressure switch 7-4 sends enabling signal to spare fueller 2 to controller fuel injection pressure signal, controller at this time,
Pump situation is opened in the interlocking that the spare fueller 2 can be inspected periodically, can be online to examine under the operating condition for not influencing system oil pressure
2 starting state of spare fueller is looked into, the safety of system is improved.
When normal filtration, operate the first three-way switch valve 3-1, make the first valve port of the first three-way switch valve 3-1 with it is described
Main fueller 1 and spare fueller 2 are connected to, and operate the second three-way switch valve 3-4, make the of the second three-way switch valve 3-4
Three valve ports are connected to connecting pipe 4, and hydraulic oil enters first filter 3-2 by the first valve port, pass through third valve port after filtering
Into connecting pipe 4.First filter 3-2 is connected to by first throttle orifice plate 3-5 with the second filter 3-3, due to first segment
The effect of discharge orifice plate 3-5, oil pressure will not decline, and can be switched to another group at any time, so being filtered in first filter 3-1
When, the second filter 3-3 can be entered by first throttle orifice plate 3-5 and ball valve by the hydraulic oil of first filter 3-1, make the
Tow filtrator 3-3 is full of always hydraulic oil, and guarantee can be switched online at any time.Differential pressure pick-up 8-1 and the filtering fill
3 parallel connections are set, differential pressure pick-up 8-1 is connect with controller, and the oil of the hydraulic oil of filter device is passed through in differential pressure pick-up 8-1 detection
Pressure sets a threshold value in differential pressure pick-up 8-1, and when 2 filter core pressure difference of filter device is more than threshold value, differential pressure pickup 8-1 is to control
Device processed issues alarm signal, shows that blocking or damage occur for first filter 3-2.When first filter 3-2 blocking, make first
The second valve port of three-way switch valve 3-1 is connected to main fueller 1 and spare fueller 2, operates the second three-way switch valve 3-
4, it is connected to the 4th valve port of the second three-way switch valve 3-4 with connecting pipe 4, the hydraulic oil in the second filter 3-3 can be straight
The second valve port was connected into the second filter 3-3, since the second filter 3-3 is full of always hydraulic oil, so by first
The hydraulic oil of the second valve port conveying of three-way switch valve 3-1 does not have to be full of the second filter 3-3, failure is avoided, after filtering
Enter connecting pipe 4 by the 4th valve port.It, can be to first filter 3-2's when being filtered using the second filter 3-3
Filter core is replaced, and can be switched to another group at any time, can also not shut down replacement filter core online.
The second shut-off valve 5-2 is normally opened when normal operation, and third shut-off valve 5-3 is normally closed, and accumulator 5-1 and connecting pipe 4 connect
It is logical, when accumulator 5-1 nitrogen pressure reduces or needs to check, close the second shut-off valve 5-2 by accumulator 5-1 and system every
From, accumulator 5-1 can be carried out to survey pressure inflated with nitrogen after opening the 5-3 pressure release of third shut-off valve, be not necessarily to shutdown inspection, it can be online
It carries out surveying pressure nitrogen charging, avoid since accumulator 5-1 pressure is low, in system power loss, accumulator 5-1 cannot provide urgent oil sources
Defect, realize not shut down and accumulator 5-1 inspected periodically.
It when operation of blast furnace is stablized, does not need frequently to adjust air quantity, therefore entire oil temperature in hydraulic system increases slowly, this Shen
Cooling device 9 please be separately provided, reduced influence of the panel cooler 9-3 failure to oil supply system, also greatly reduce oil
The risk of system water inlet, while energy-saving effect is obvious, and when tank temperature is increased to 46 DEG C, the oil temperature sensing in fuel tank is arranged in
Pump signal is opened in device sending, and the hydraulic oil in fuel tank is drawn into panel cooler 9-3 and cools down by cooling oil pump 9-1 starting,
The 5th shut-off valve 9-4 is opened, fuel tank connection will be delivered to by panel cooler 9-3 hydraulic oil after cooling, until oil temperature drops
It is out of service after to 30 DEG C.When panel cooler 9-3 in the event of failure, can directly remove and be overhauled, have no effect on system operation.
It should be noted last that the above specific embodiment is only used to illustrate the technical scheme of the present invention and not to limit it,
Although being described the invention in detail referring to example, those skilled in the art should understand that, it can be to the present invention
Technical solution be modified or replaced equivalently, without departing from the spirit and scope of the technical solution of the present invention, should all cover
In the scope of the claims of the present invention.
Claims (9)
1. a kind of blast furnace air machine hydraulic system characterized by comprising
Fuel tank；
Main fueller (1), is connected to the fuel tank；
Spare fueller (2), is connected to the fuel tank；
Filter device (3), first end are connected to the main fueller (1) and spare fueller (2)；
Connecting pipe (4), first end are connected to the filter device (3) second end；
Servo-cylinder (6) is connected to the connecting pipe (4) second end；
Accumulator apparatus (5) is connected to the connecting pipe (4)；
Chain to open pump detection device (7), first end is connected to the connecting pipe (4), and second end is connected to the fuel tank；
Controller, with it is described it is chain open pump detection device (7) and spare fueller (2) connect；
The filter device includes:
First three-way switch valve (3-1) is connected to the main fueller (1) and spare fueller (2)；
First filter (3-2), first end are connected to the first valve port of first three-way switch valve (3-1)；
Second filter (3-3), first end are connected to the second valve port of first three-way switch valve (3-1)；
Second three-way switch valve (3-4), the third valve port and the first filter (3- of second three-way switch valve (3-4)
2) second end connection, the 4th valve port of second three-way switch valve (3-4) and the second end of second filter (3-3)
Connection, second three-way switch valve (3-4) are connected to the connecting pipe (4), and the first filter (3-2) passes through first
Restricting orifice (3-5) is connected to second filter (3-3)；
When the first filter (3-2) blocking, make the second valve port of first three-way switch valve (3-1) and the main confession
Oily device (1) and spare fueller (2) connection, operate second three-way switch valve (3-1), switch second threeway
4th valve port of valve (3-4) is connected to the connecting pipe (4), and the hydraulic oil in second filter (3-3) can be direct
Enter the second filter 3-3 by the second valve port, since second filter (3-3) is full of always hydraulic oil, so
Do not have to be full of second filter (3-3) by the hydraulic oil that the second valve port of first three-way switch valve (3-1) conveys,
Failure is avoided, the connecting pipe (4) are entered by the 4th valve port after filtering；
Wherein, the controller receives the chain fuel injection pressure signal for opening pump detection device (7) and sending, and fills to the spare fuel feeding
It sets (2) and sends enabling signal.
2. blast furnace air machine hydraulic system according to claim 1, which is characterized in that the main fueller includes:
Main oil pump (1-1) is connected to by first entrance strainer (1-2) with the fuel tank；
Check valve (1-3), first end are connected to the main oil pump (1-1)；
First shut-off valve (1-4) is connected to the check valve (1-3) second end；
First safety valve (1-5) is arranged between the check valve (1-3) and the main oil pump (1-1).
3. blast furnace air machine hydraulic system according to claim 1, it is characterised in that:
It is provided with pressure detector on the connecting pipe (4), the pressure detector is connect with the controller；
Wherein, the controller receives the pressure signal that the pressure detector is sent, according to pressure signal to the spare confession
Oily device sends enabling signal.
4. blast furnace air machine hydraulic system according to claim 1, which is characterized in that the accumulator apparatus includes:
Accumulator (5-1) is connected to the connecting pipe (4)；
Second shut-off valve (5-2) is arranged between the accumulator (5-1) and the connecting pipe (4)；
Second safety valve (5-4), Yu Suoshu accumulator (5-1) connection；
Third shut-off valve (5-3), first end are connected to the accumulator (5-1), and second end is connected to the fuel tank.
5. blast furnace air machine hydraulic system according to claim 1, which is characterized in that chain open pumps detection device packet
It includes:
It detects pipeline (7-1), first end is connected to the connecting pipe (4), and second end is connected to the fuel tank；
4th shut-off valve (7-2) is arranged on the detection pipeline (7-1)；
Second restricting orifice (7-3) is arranged on the detection pipeline (7-1)；
Pressure switch (7-4) is arranged between the 4th shut-off valve (7-2) and second restricting orifice (7-3), the pressure
Power switch (7-4) is connect with the controller.
6. blast furnace air machine hydraulic system according to claim 1, which is characterized in that the blast furnace air machine hydraulic system
Further include:
Differential pressure measuring device (8), in parallel with the filter device (3), the differential pressure measuring device (8) and the controller connect
It connects.
7. blast furnace air machine hydraulic system according to claim 6, which is characterized in that the differential pressure measuring device includes:
Differential pressure pick-up (8-1), in parallel with the filter device (3), the differential pressure pick-up (8-1) and the controller connect
It connects.
8. blast furnace air machine hydraulic system according to claim 1, which is characterized in that the blast furnace air machine hydraulic system
Further include:
Cooling device (9), is connected to the fuel tank.
9. blast furnace air machine hydraulic system according to claim 8, which is characterized in that the cooling device includes:
Cooling oil pump (9-1) is connected to by second entrance strainer (9-2) with the fuel tank；
Panel cooler (9-3), first end are connected to the cooling oil pump (9-1), second end by the 5th shut-off valve (9-4) with
The fuel tank connection.
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| CN201810164171.6A CN108397432B (en) | 2018-02-27 | 2018-02-27 | A kind of blast furnace air machine hydraulic system |
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| CN108397432B true CN108397432B (en) | 2019-11-19 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109139625A (en) * | 2018-11-01 | 2019-01-04 | 成都赛来机械有限公司 | redundant control hydraulic station |
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| CN206175359U (en) * | 2016-08-12 | 2017-05-17 | 三河沃达液压控制系统有限公司 | Gas turbine hydraulic servo control system and power oil device for actuating mechanism thereof |
| CN206329561U (en) * | 2016-12-14 | 2017-07-14 | 宜宾市翠屏区显峰建材有限公司 | mine hydraulic bracket control system |
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| NO314341B1 (en) * | 2001-06-08 | 2003-03-10 | Joergen Groenfur | Process and apparatus for fine filtration |
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| CN206175359U (en) * | 2016-08-12 | 2017-05-17 | 三河沃达液压控制系统有限公司 | Gas turbine hydraulic servo control system and power oil device for actuating mechanism thereof |
| CN206329561U (en) * | 2016-12-14 | 2017-07-14 | 宜宾市翠屏区显峰建材有限公司 | mine hydraulic bracket control system |
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| CN206636860U (en) * | 2017-04-06 | 2017-11-14 | 重庆市农业科学院 | A kind of hydraulic system of trimmer |
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| CN108397432A (en) | 2018-08-14 |
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