CN106931176A - Blast furnace opens diffusion valve with flexible - Google Patents
Blast furnace opens diffusion valve with flexible Download PDFInfo
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- CN106931176A CN106931176A CN201710113502.9A CN201710113502A CN106931176A CN 106931176 A CN106931176 A CN 106931176A CN 201710113502 A CN201710113502 A CN 201710113502A CN 106931176 A CN106931176 A CN 106931176A
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- cylinder
- bonnet
- valve
- hydraulic cylinder
- blast furnace
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/002—Evacuating and treating of exhaust gases
- C21B7/005—Bleeder valves or slides
-
- 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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/021—Valves for interconnecting the fluid chambers of an actuator
-
- 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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/023—Excess flow valves, e.g. for locking cylinders in case of hose burst
-
- 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
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
- F15B20/007—Overload
-
- 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
- F15B21/08—Servomotor systems incorporating electrically operated control means
- F15B21/087—Control strategy, e.g. with block diagram
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/003—Safety valves; Equalising valves, e.g. pressure relief valves reacting to pressure and temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/50—Pressure control
- F15B2211/505—Pressure control characterised by the type of pressure control means
- F15B2211/50563—Pressure control characterised by the type of pressure control means the pressure control means controlling a differential pressure
- F15B2211/50572—Pressure control characterised by the type of pressure control means the pressure control means controlling a differential pressure using a pressure compensating valve for controlling the pressure difference across a flow control valve
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Analytical Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The present invention disclose a kind of blast furnace and opens diffusion valve with flexible, including tubular valve body and the bonnet with the sealing cooperation of valve body upper surface；The lower surface of bonnet is provided with one and diffuses cylinder, diffuses drum outer wall and valve body inwall and is slidingly sealed cooperation, diffuse be provided with the side wall of cylinder it is some diffuse through hole, the lower edge for diffusing through hole and the lower end interval setting for diffusing cylinder；A support is provided with valve body, some columns are provided with support, the top of each column is connected with a top board, the lower surface of top board is connected with one or more retractor device upper end；The lower end of retractor device is connected with the upper surface of bonnet；Diffuse the difference that the distance between lower edge and bonnet lower surface of through hole are not more than retractor device maximum length and minimum length；The length of column is equal with retractor device maximum length.The present invention drives bonnet and diffuses cylinder motion by retractor device, by diffusing diffuse hole emission coal gas on cylinder, it is to avoid to the purging of valve body, extend the service life of valve body.
Description
Technical field
The present invention relates to a kind of blast furnace diffusion valve is opened with flexible.
Background technology
Diffusion valve is the key equipment of blast furnace raw gas diffusion system, installed in coal gas tedge top.Main work(
Can be that, in blast furnace staying, diffusion valve is opened, and diffuses furnace pressure.In addition, diffusion valve also acts as peace to blast furnace and installations and facilities
The effect of full guard, when furnace top pressure exceedes setting pressure, diffusion valve needs to automatically turn on.
Traditional diffusion valve has two, one when being coal gas diffusion to the purging of sealing surface of seat, due to containing in coal gas
There are a large amount of graininess dust, be directly flushed on sealing surface of seat, can have a negative impact to its life-span, two is that diffusion valve is played
When safeguard protection is acted on, rely primarily on the effect of disc spring in bonnet, when furnace top pressure more than disc spring to the pressure of bonnet when, bonnet
Will open, but now because diffusion valve is not all turned on, simply part is opened, and has even only opened one section of gap of very little,
So coal gas is very violent to valve seat and washing away for valve bonnet seal face, under such conditions, diffusion valve will soon be damaged.
The content of the invention
Regarding to the issue above, the present invention provides a kind of blast furnace for avoiding valve body from being purged and opens diffusion valve with flexible.
To reach above-mentioned purpose, blast furnace of the present invention opens diffusion valve with flexible, including tubular valve body and with the valve body
The bonnet that upper surface sealing coordinates；
The bonnet includes that the one of the lower surface connection of bonnet body and bonnet body diffuses cylinder, described to diffuse drum outer wall
Be slidingly sealed cooperation with the valve body inwall, be provided with the side wall for diffusing cylinder it is some diffuse through hole, it is described to diffuse through hole
Lower edge and the lower end interval setting for diffusing cylinder；
A support is provided with the valve body, some columns, the top and of each column are provided with the support
Top board is connected, and the lower surface of the top board is connected with one or more retractor device upper end；
The lower end of the retractor device is connected with the upper surface of bonnet；
The lower edge for diffusing through hole is maximum with the no more than described retractor device of the distance between the bonnet lower surface
The difference of length and minimum length；The length of the column is equal with the retractor device maximum length.
Further, the top board is connected with the bonnet by a retractor device, the axis of the retractor device with
The axis of the bonnet overlaps；
The retractor device is hydraulic cylinder or cylinder；
The rod chamber and rodless cavity of the hydraulic cylinder or cylinder made with the positive drive of one or two five-way valve respectively liquid/gas hole and
The connection of liquid/gas hole is made in reaction；The air admission hole of two five-way valves is connected with gas/liquid potential source；
A pressure sensor, the pressure sensing are provided with the rod chamber or rodless cavity oil circuit of the hydraulic cylinder or cylinder
Device is connected with a controller communication, and the controller controls the magnetic valve.
Further, the bonnet is connected by more than one hydraulic cylinder with the top board；
Each hydraulic cylinder along the bonnet the circumferentially uniform edge for being distributed in the bonnet, each hydraulic pressure cylinder shaft
Axis of the line each parallel to bonnet.
Further, hydraulic control device is provided with the oil circuit of each hydraulic cylinder, the hydraulic control device is wrapped
Include solenoid directional control valve, hydraulic lock, double outlet one-way throttle valves, the secon-dary pressure compensation device, secon-dary pressure compensation device being sequentially connected
It is arranged on the oil inlet pipeline of the rodless cavity side of hydraulic cylinder；The oil inlet and the liquid of wherein described hydraulic cylinder rodless cavity side
It is additionally provided with load feedback oil circuit between the secon-dary pressure compensation device of the hydraulic control device of cylinder pressure, each hydraulic cylinder rodless cavity side is entered
Hydraulic fluid port is connected with load feedback oil circuit respectively, and the spring side of secon-dary pressure compensation device is connected with load feedback oil circuit, each hydraulic pressure
A check valve that pressure oil is caused load feedback oil circuit is all connected at the rodless cavity side oil inlet of cylinder.
Further, it is connected with brake valve between the secon-dary pressure compensation device and described pair of outlet one-way throttle valve.
Further, overflow valve is provided with described load feedback oil circuit.
Further, the retractor device includes hydraulic cylinder, cylinder, electric cylinders or Electrohydraulic push rod.
Further, the inside for diffusing cylinder is a conical cavity, and the miner diameter end of the conical cavity is down.
Further, the bottom for diffusing cylinder is provided with one group of flabellum, and each flabellum is along the circumferential equal of the cylinder
Even distribution, each flabellum is circumferentially obliquely installed.
Further, the lower surface of the bonnet is connected with a support column, and at least one circle spiral shell is provided with the support column
Rotation flabellum, the length of the axis direction of cylinder is diffused described in for the spiral fan and described to diffuse tube length degree identical；
The outward flange of the spiral fan is connected with an inwall that diffuses.
Blast furnace of the present invention opens diffusion valve with flexible, and in emission coal gas, retractor device action pulls bonnet to beat upwards
Open, diffuse cylinder and expose valve body, coal gas is outwards diffused from cylinder is diffused, be solid torus due to diffusing a bottom, so avoiding coal
Purging of the gas to valve seat.When coal gas diffusion is finished to be needed to close, retractor device action promotes bonnet to move downward, and closing is put
Dissipate valve.
Brief description of the drawings
Fig. 1 is schematic diagram when blast furnace of the present invention promotes the embodiment 1 for opening hydraulic cylinder to close；
Fig. 2 is schematic diagram when blast furnace of the present invention promotes the embodiment 1 for opening hydraulic cylinder to open；
Fig. 3 is the direct action hydraulic schematic diagram that blast furnace of the present invention promotes the embodiment 1 for opening hydraulic cylinder；
Fig. 4 is the reverse action hydraulic schematic diagram that blast furnace of the present invention promotes the embodiment 1 for opening hydraulic cylinder；
Fig. 5 is the hydraulic schematic diagram that blast furnace of the present invention promotes the embodiment 2 for opening hydraulic cylinder.
Specific embodiment
With reference to Figure of description, the present invention will be further described.
Embodiment 1
As Figure 1-4, the present embodiment provides a kind of blast furnace and opens diffusion valve with flexible, including tubular valve body 1 and with
The bonnet 2 that the sealing of the upper surface of the valve body 1 coordinates；
The bonnet 2 includes bonnet body 21 and is connected to the lower surface of bonnet body 21 and is provided with one to diffuse cylinder 22, described
Diffuse the outer wall of cylinder 22 and be slidingly sealed cooperation with the inwall of the valve body 1, be provided with the side wall for diffusing cylinder 22 and some diffuse logical
Hole, the lower edge for diffusing through hole and the lower end interval setting for diffusing cylinder 22；
A support 3 is provided with the valve body 1, some columns are provided with the support 3, the top of each column with
One top board is connected, and the lower surface of the top board is connected with the upper end of one or more retractor device 4；
The lower end of the retractor device 4 is connected with the upper surface of bonnet 2；
The distance between the lower edge for diffusing through hole and the lower surface of the bonnet 2 are not more than the retractor device 4 most
The difference of long length and minimum length；The length of the column is equal with the maximum length of the retractor device 4.
The top board is connected with the bonnet 2 by a retractor device 4, the axis of the retractor device 4 and the valve
The axis of lid 2 overlaps；
The retractor device 4 is hydraulic cylinder or cylinder；
The rod chamber and rodless cavity of the hydraulic cylinder or cylinder make liquid/gas hole with the positive drive of one or two five-way valve 5 respectively
Liquid/gas hole is made with reaction to connect；The air admission hole of two five-way valves 5 is connected with gas/liquid potential source；
A pressure sensor 6 is provided with the rod chamber or rodless cavity oil circuit of the hydraulic cylinder or cylinder, the pressure is passed
Sensor 6 is connected with a controller communication, and the controller controls the magnetic valve.
When diffusion valve needs to open, hydraulic cylinder action pulls bonnet 2 to open up, and diffuses cylinder 22 and exposes valve body, coal gas
Outwards diffused from cylinder 22 is diffused, be solid torus due to diffusing the bottom of cylinder 22, so avoiding purging of the coal gas to valve seat.
When diffusion valve needs to close, hydraulic cylinder action promotes bonnet 2 to move downward, and closes diffusion valve.
When conditions of blast furnace exception, when pressure is excessive, hydraulic cylinder is subject to the thrust of bonnet 2, and pressure becomes in whole hydraulic circuit
Greatly, when pressure rise is to arrival specified pressure value, pressure sensor 6 sends signal, and control valve group action is opened bonnet 2 and entered
Row is diffused, it is to avoid accident occurs.
Embodiment 2
As shown in Fig. 1,2 and 5, the present embodiment provides a kind of blast furnace and opens diffusion valve with flexible, including tubular the He of valve body 1
The bonnet 2 coordinated with the sealing of the upper surface of the valve body 1；
The lower surface of the bonnet 2 is provided with one and diffuses cylinder 22, and the outer wall of cylinder 22 that diffuses is slided with the inwall of the valve body 1
Sealing coordinate, be provided with the side wall for diffusing cylinder 22 it is some diffuse through hole, the lower edge for diffusing through hole is put with described
Dissipate the lower end interval setting of cylinder 22；
A support 3 is provided with the valve body 1, some columns are provided with the support 3, the top of each column with
One top board is connected, and the lower surface of the top board is connected with the upper end of one or more retractor device 4；
The lower end of the retractor device 4 is connected with the upper surface of bonnet 2；
The distance between the lower edge for diffusing through hole and the lower surface of the bonnet 2 are not more than the retractor device 4 most
The difference of long length and minimum length；The length of the column is equal with the maximum length of the retractor device 4.
The bonnet 2 is connected by more than one retractor device 4 with the top board；Retractor device 4 in the present embodiment
Using hydraulic cylinder.
Each hydraulic cylinder along the bonnet 2 the circumferentially uniform edge for being distributed in the bonnet 2, each hydraulic cylinder
Axis of the axis each parallel to bonnet 2.
Hydraulic control device is provided with the oil circuit of each hydraulic cylinder, the hydraulic control device includes being sequentially connected
Solenoid directional control valve 7, hydraulic lock 8, double outlet one-way throttle valves 9, secon-dary pressure compensation device 11, secon-dary pressure compensation device 11 sets
On the oil inlet pipeline of the rodless cavity side of hydraulic cylinder；The oil inlet and the hydraulic cylinder of wherein described hydraulic cylinder rodless cavity side
Hydraulic control device secon-dary pressure compensation device 11 between be additionally provided with load feedback oil circuit, the oil-feed of each hydraulic cylinder rodless cavity side
Mouth is connected with load feedback oil circuit respectively, and the spring side of secon-dary pressure compensation device 11 is connected with load feedback oil circuit, each hydraulic pressure
A check valve 12 that pressure oil is caused load feedback oil circuit is all connected at the rodless cavity side oil inlet of cylinder.
In the present embodiment, pull and promote the motion of bonnet 2, when using multiple hydraulic cylinders, need using multiple hydraulic cylinders
The action for ensureing each hydraulic cylinder is synchronous, can otherwise cause to diffuse cylinder 22 deflecting, and is easily made to diffusing cylinder 22 or valve seat
Into damage.
The present embodiment is provided and entered by taking the hydraulic control system of bonnet 2 that the action of bonnet 2 is realized using two hydraulic cylinders as an example
Row explanation, P ends are the oil inlet end of the hydraulic control system of bonnet 2, and T ends are the oil outlet end of the hydraulic control system of bonnet 2.First liquid
Cylinder pressure first group of hydraulic control device of correspondence, second hydraulic cylinder second group of hydraulic control device of correspondence, first, second group of hydraulic pressure
Control device constitutes the hydraulic control system of bonnet 2.First group, second group of hydraulic control device include solenoid directional control valve 7, electromagnetism
Double outlet one-way throttle valves 9 of the rear end connection of the hydraulic lock 8, described hydraulic lock 8 of the connection of the rear end of reversal valve 7, described pair goes out
The rear end of mouth one-way throttle valve 9 is provided with secon-dary pressure compensation device 11, and described secon-dary pressure compensation device 11 is arranged on hydraulic cylinder
On inflow pipeline at the oil inlet of rodless cavity side, while the spring side of the secon-dary pressure compensation device 11 and hydraulic cylinder rodless cavity side
Load feedback oil circuit is connected with oil inlet.
Secon-dary pressure compensation device 11 is the upper of secon-dary pressure compensation device 11 with pair one end of outlet one-way throttle valves 9 is close to
Trip, secon-dary pressure compensation device 11 near one end of hydraulic cylinder for secon-dary pressure compensation device 11 downstream.
Pipeline at the rodless cavity side oil inlet of each hydraulic cylinder all connects a check valve 12, and check valve 12 is located at secondary
The downstream of stage pressure compensator 11, that is, check valve 12 inflow pipeline be arranged on secon-dary pressure compensation device 11 and hydraulic cylinder without
Between the oil inlet of rod cavity side, the outlet oil circuit of all check valves 12 is in parallel, so as to by the rodless cavity side of each hydraulic cylinder
Pressure unification is in load feedback oil circuit at oil inlet, spring side and the load feedback oil communication of secon-dary pressure compensation device 11.
When the system of bonnet 2 works, hydraulic cylinder rod chamber starts to stretch out, and rodless cavity lateral pressure begins setting up, and forms load
Pressure PL, because the opening degree of the speed control muffler of each hydraulic cylinder is different different with the load of each Hydraulic Cylinder, each hydraulic pressure
The load pressure P of cylinderLCan be different, because the port of export of all check valves 12 is connected in same oil line pipe, so single
The maximum P of all hydraulic cylinder load pressure is equal to the pressure in the exit of valve 12Lmax, that is, the pressure in load feedback oil circuit
Power is the maximum of all hydraulic cylinder load pressure, due to load feedback oil circuit and the spring side of each secon-dary pressure compensation device 11
It is connected, so the pressure that each secon-dary pressure compensation device 11 bears is the pressure in load feedback oil circuit, that is, all liquid
The maximum P of cylinder pressure load pressureLmax。
The spring setting pressure difference of all secon-dary pressure compensation devices 11 is Δ Pa, so each secon-dary pressure compensation device 11
Upstream pressure PS=PLmax+ΔPaIt is equal, because each valve group fuel feed pump is communicated, so the pressure that oil circuit enters before solenoid directional control valve 7
PPAll it is consistent, so from the import of solenoid directional control valve 7 to the pressure differential deltap P of the upstream of secon-dary pressure compensation device 11b=PP-PSAlso phase
Deng.
It is standard-sized sheet, the opening degree of each hydraulic lock 8 and one-way throttle valve 9 in inlet side after being powered due to solenoid directional control valve 7
It is regarded as the same, and the import of solenoid directional control valve 7 is to the pressure differential deltap P of the upstream of secon-dary pressure compensation device 11bAlso it is equal therefore logical
The flow for crossing each pressure compensator is equal, that is, equal into the flow of each hydraulic cylinder rodless cavity, due to the same time
Flow into each hydraulic cylinder is equal, therefore the speed of each hydraulic cylinder is also just equal.
Secondly as opening degree of each valve group on the inflow pipeline of rodless cavity side is all equal, and it is non-adjustable, then enter
The flow of each hydraulic cylinder rodless cavity is by from the import of solenoid directional control valve 7 to the pressure differential deltap P of the upstream of secon-dary pressure compensation device 11bDetermine,
Namely the responsiveness of each hydraulic cylinder is by pressure differential deltap PbDetermine, due to the pressure P before solenoid directional control valve 7PIt is constant, second pressure
The equal Δ P of setting pressure difference of compensator 11aAlso it is constant, so maximum functional of the speed of each hydraulic cylinder by load feedback circuit feedback
Load PLmaxDetermine, and the workload of each hydraulic cylinder is by the speed control muffler back pressure for producing of each hydraulic cylinder and bearing for being promoted
Carry and determine, because hydraulic cylinder overcomes the load pressure that Bar Wire Product weight is produced less than the back pressure that outlet throttling is produced, and overcome rod
The load pressure that the weight band of material comes is non-adjustable, so it is believed that maximum functional load PLmaxIt is opening by producing maximum back pressure
Minimum speed control muffler is spent to determine, that is, the speed of each hydraulic cylinder is determined by the minimum speed control muffler of opening degree.So
When actually used, maximum is adjusted to by by other choke valve opening degrees, intentionally turns to suitable the opening degree of a choke valve down,
The hydraulic cylinder corresponding to it is set to produce the maximum back pressure in all hydraulic cylinder, so that it may to realize only a choke valve need to being operated to reach control
Whole system hydraulic cylinder responsiveness processed, and realize synchronous purpose.
The hydraulic control system of bonnet 2 of the present embodiment, maximum when each hydraulic cylinder is acted using load feedback oil circuit
Load pressure is led to the spring side of the pressure compensator at the oil inlet of hydraulic cylinder rodless cavity side, it is ensured that pressure compensator upstream
Pressure is consistent, realize that the oil inlet quantity of each hydraulic cylinder is identical, so as to realize the action synchronization of each hydraulic cylinder, it is to avoid each valve
The asynchronous influence for bringing of the hydraulic cylinder of lid 2.Again due to feedback oil circuit is that the load of each hydraulic cylinder is unified into maximum pressure
Load, and maximum load pressure i.e. one-way throttle valve 9 be open minimum hydraulic cylinder load pressure, it is possible to by will
The aperture of one hydraulic cylinder oil circuit speed control muffler is turned down, so that it may realize only a choke valve need to being operated to reach control whole system
Hydraulic cylinder responsiveness, and realize synchronous purpose.The hydraulic control system of bonnet 2 of the present embodiment simultaneously, simple structure is not required to
The pipeline of complexity is installed, the effect of good hydraulic cylinder synchronous is reached using less cost and space.
On the basis of the hydraulic control system of above-mentioned bonnet 2, go out with described pair in each described secon-dary pressure compensation device 11
Brake valve 10 is connected between mouth one-way throttle valve 9, and 10 groups described of brake valve is connected with bidirectional relief valve 13, bidirectional flooding
Valve 13 can adjust the oil pressure relief of the both sides of brake valve 10, so that the maximum pressure of limitation hydraulic cylinder both sides well, effectively
Protection Hydraulic Elements, hydraulic jack, hydraulic oil pipe, prevent the excessive phenomenon of major axis moment of torsion from occurring.
On the basis of above-mentioned hydraulic control system, overflow valve 13 is set on load feedback oil circuit.Overflow valve 13 can be limited
Highest load pressure, prevents valve group from producing stuck phenomenon.
Embodiment 3
On the basis of above-mentioned any embodiment, the inside for diffusing cylinder 22 is a conical cavity, and the taper is empty
The miner diameter end in chamber is down.Cylinder 22 is tapered for diffusing in the present embodiment, and flowing velocity can be gradually in cylinder 22 is diffused for diffused gas
Reduce, so that speed when hole is diffused in diffused gas outflow slows down, can to a certain extent reduce point during diffused gas
Howl noise.
Embodiment 4
On the basis of embodiment 1 or 2, the bottom for diffusing cylinder 22 is provided with one group of flabellum, and each flabellum is along institute
The circumference for stating cylinder is uniformly distributed, and each flabellum is circumferentially obliquely installed.When diffused gas are by flabellum, flabellum will can be put
The flow direction for dissipating gas is changed, and diffused gas is being diffused as spiral air flow in cylinder 22, and spiral air flow is by putting
When dissipating hole, will not directly go out and diffuse hole, but be diffused at an angle from tangential loss or with hole is diffused such that it is able to significantly
Reduce the noise that screams during diffused gas.
Embodiment 5
On the basis of embodiment 1 or 2, the lower surface of the bonnet 2 is connected with a support column, is set on the support column
There is at least one circle spiral fan, the length of the axis direction that the spiral fan diffuses cylinder 22 described in is grown with the cylinder 22 that diffuses
Degree is identical；The outward flange of the spiral fan is connected with the inwall of cylinder 22 that diffuses.When diffused gas enter diffuses cylinder 22, meeting
Along spiral fan and diffuse the space surrounded between the inwall of cylinder 22 and flowed.The flow direction of gas can be changed first,
Gas is set to form spiral air flow；Secondly, this setup diffuses hole equivalent to being provided with multiple along a helical duct, from
And, gas is flowing what is constantly progressively diffused along helical duct.Therefore, it is possible to substantially reduce the noise that screams during diffused gas.
More than, only presently preferred embodiments of the present invention, but protection scope of the present invention is not limited thereto, any to be familiar with sheet
Those skilled in the art the invention discloses technical scope in, the change or replacement that can be readily occurred in should all be covered
Within protection scope of the present invention.Therefore, the protection domain that protection scope of the present invention should be defined by claim is defined.
Claims (10)
1. a kind of blast furnace opens diffusion valve with flexible, it is characterised in that：Valve body including tubular and close with the valve body upper surface
Seal the bonnet for coordinating；
The bonnet includes that the one of the lower surface connection of bonnet body and bonnet body diffuses cylinder, described to diffuse drum outer wall and institute
State valve body inwall and be slidingly sealed cooperation, be provided with the side wall for diffusing cylinder it is some diffuse through hole, it is described to diffuse under through hole
Edge and the lower end interval setting for diffusing cylinder；
A support is provided with the valve body, some columns, top and a top board of each column are provided with the support
Connection, the lower surface of the top board is connected with one or more retractor device upper end；
The lower end of the retractor device is connected with the upper surface of bonnet；
The distance between the lower edge for diffusing through hole and described bonnet lower surface are not more than the retractor device maximum length
With the difference of minimum length；The length of the column is equal with the retractor device maximum length.
2. blast furnace as claimed in claim 1 opens diffusion valve with flexible, it is characterised in that：The top board passes through one with the bonnet
Individual retractor device connection, the axis of the retractor device overlaps with the axis of the bonnet；
The retractor device is hydraulic cylinder or cylinder；
The rod chamber and rodless cavity of the hydraulic cylinder or cylinder make liquid/gas hole and reaction with the positive drive of one or two five-way valve respectively
Make the connection of liquid/gas hole；The air admission hole of two five-way valves is connected with gas/liquid potential source；
Be provided with a pressure sensor on the rod chamber or rodless cavity oil circuit of the hydraulic cylinder or cylinder, the pressure sensor with
One controller communication is connected, and the controller controls the magnetic valve.
3. blast furnace as claimed in claim 1 opens diffusion valve with flexible, it is characterised in that：The bonnet passes through more than one liquid
Cylinder pressure is connected with the top board；
Each hydraulic cylinder along the bonnet the circumferentially uniform edge for being distributed in the bonnet, each hydraulic cylinder axis are equal
Parallel to the axis of bonnet.
4. blast furnace as claimed in claim 3 opens diffusion valve with flexible, it is characterised in that：Set on the oil circuit of each hydraulic cylinder
There is hydraulic control device, the hydraulic control device includes that the solenoid directional control valve being sequentially connected, hydraulic lock, double outlets are unidirectionally saved
Stream valve, secon-dary pressure compensation device, secon-dary pressure compensation device are arranged on the oil inlet pipeline of the rodless cavity side of hydraulic cylinder；Wherein institute
Also set between the secon-dary pressure compensation device of the hydraulic control device of the oil inlet and the hydraulic cylinder of the hydraulic cylinder rodless cavity side stated
The oil inlet for having load feedback oil circuit, each hydraulic cylinder rodless cavity side is connected with load feedback oil circuit respectively, secon-dary pressure compensation device
Spring side be connected with load feedback oil circuit, all connecting one at the rodless cavity side oil inlet of each hydraulic cylinder causes pressure oil
The check valve of load feedback oil circuit.
5. blast furnace as claimed in claim 4 opens diffusion valve with flexible, it is characterised in that：In the secon-dary pressure compensation device and institute
State and be connected with brake valve between double outlet one-way throttle valves.
6. blast furnace as claimed in claim 5 opens diffusion valve with flexible, it is characterised in that：Set on described load feedback oil circuit
There is overflow valve.
7. blast furnace as claimed in claim 1 opens diffusion valve with flexible, it is characterised in that：The retractor device include hydraulic cylinder,
Cylinder, electric cylinders or Electrohydraulic push rod.
8. blast furnace as claimed in claim 1 opens diffusion valve with flexible, it is characterised in that：The inside for diffusing cylinder is a cone
Shape cavity, the miner diameter end of the conical cavity is down.
9. blast furnace as claimed in claim 1 opens diffusion valve with flexible, it is characterised in that：The bottom for diffusing cylinder is provided with one
Group flabellum, each flabellum is uniformly distributed along the circumference of the cylinder, and each flabellum is circumferentially obliquely installed.
10. blast furnace as claimed in claim 1 opens diffusion valve with flexible, it is characterised in that：The lower surface of the bonnet is connected with
One support column, is provided with least one circle spiral fan on the support column, the spiral fan diffuses the axis side of cylinder described in
To length with described to diffuse tube length degree identical；
The outward flange of the spiral fan is connected with an inwall that diffuses.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710113502.9A CN106931176B (en) | 2017-02-28 | 2017-02-28 | Expansion opening blow-off valve for blast furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710113502.9A CN106931176B (en) | 2017-02-28 | 2017-02-28 | Expansion opening blow-off valve for blast furnace |
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| Publication Number | Publication Date |
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| CN106931176A true CN106931176A (en) | 2017-07-07 |
| CN106931176B CN106931176B (en) | 2022-11-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710113502.9A Active CN106931176B (en) | 2017-02-28 | 2017-02-28 | Expansion opening blow-off valve for blast furnace |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109237194A (en) * | 2018-11-12 | 2019-01-18 | 上海宏波工程咨询管理有限公司 | Temporary pipeline plugging device and pipeline temporary package method |
| CN110012859A (en) * | 2019-05-22 | 2019-07-16 | 佛山佛塑科技集团股份有限公司 | Adjutage and aquaculture pond self-draining arrangement |
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| CN109237194A (en) * | 2018-11-12 | 2019-01-18 | 上海宏波工程咨询管理有限公司 | Temporary pipeline plugging device and pipeline temporary package method |
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| Publication number | Publication date |
|---|---|
| CN106931176B (en) | 2022-11-22 |
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