CN107747570A - A kind of Blast Furnace Throat Ventilation Valve hydraulic control circuit - Google Patents
A kind of Blast Furnace Throat Ventilation Valve hydraulic control circuit Download PDFInfo
- Publication number
- CN107747570A CN107747570A CN201711171441.8A CN201711171441A CN107747570A CN 107747570 A CN107747570 A CN 107747570A CN 201711171441 A CN201711171441 A CN 201711171441A CN 107747570 A CN107747570 A CN 107747570A
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- China
- Prior art keywords
- valve
- pressure
- hydraulic control
- oil
- hydraulic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
-
- 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
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/0401—Valve members; Fluid interconnections therefor
-
- 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
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/0401—Valve members; Fluid interconnections therefor
- F15B2013/0412—Valve members; Fluid interconnections therefor with three positions
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention belongs to field of metallurgy, is related to a kind of Blast Furnace Throat Ventilation Valve hydraulic control circuit：The repairing valve group of setting and superposition valve group control the normal opening and closing of Blast Furnace Throat Ventilation Valve.Described superposition valve group is sequentially connected by reversal valve, hydraulic control one-way valve and one-way throttle valve and is connected by pipeline with hydraulic cylinder, described repairing valve group is made up of throttle orifice, pressure-reducing valve and stop valve, high pressure liquid force feed is adjusted to low-pressure hydraulic oil to oil returning tube repairing by the pressure of pressure-reducing valve, prevents the hydraulic oil in oil pipe that the chamber of hydraulic cylinder two and the chamber of hydraulic cylinder two be connected from emptying；Solve the problems, such as that Blast Furnace Throat Ventilation Valve can not be opened in time because of hydraulic oil emptying in the chamber of hydraulic cylinder two and connecting pipe.
Description
Technical field
The invention belongs to field of metallurgy, is related to a kind of Blast Furnace Throat Ventilation Valve hydraulic control circuit.
Background technology
Bleeding valve is the heavy caliber safety valve that blast furnace roof prevents top pressure from exceeding safety value and set, and is furnace roof safety
Last one of risk prevention instruments.The hydraulic control hydraulic valve tablecloth of the hydraulic-driven control loop composition of usual bleeding valve is put
On the main platform of the high furnace roofs of about 40m, and diffuse valve body and hydraulic cylinder is arranged on furnace roof highest platform, both discrepancy in elevation will
Nearly 50m.
However, only being overhauled or during accident condition in furnace roof, hydraulic control valve platform can just control hydraulic cylinder to act,
Bleeding valve is opened, therefore generally bleeding valve is in non-action state for a long time.Another aspect furnace roof diffuses
Hydraulic control one-way valve in the hydraulic control circuit of valve can not ensure not leak in the case of prolonged, even in oil returning tube
The check valve of upper installation high back pressure can similarly produce leakage.So in hydraulic cylinder and the oil pipe being connected with the chamber of hydraulic cylinder two
Hydraulic oil can be because leaking lasting emptying, so as to the oil pipe for causing hydraulic cylinder and being connected with the chamber of hydraulic cylinder two due to the effect of deadweight
Interior gassy is emptied.
When bleeding valve requirement acts immediately, it is necessary to after first topping up force feed fills up the chamber of diffusion valve hydraulic cylinder two and pipeline
Bleeding valve could be driven, the requirement in emergency circumstances quickly opened can not be met, serious production accident may be caused.
The content of the invention
In view of this, it is an object of the invention to provide a kind of Blast Furnace Throat Ventilation Valve hydraulic cylinder and pipeline evacuation of preventing
Hydraulic control circuit.
To reach above-mentioned purpose, the present invention provides following technical scheme：
A kind of Blast Furnace Throat Ventilation Valve hydraulic control circuit, including repairing valve group, superposition valve group, hydraulic cylinder, oil supply pipe,
Oil returning tube and the connecting pipe of superposition valve group and hydraulic cylinder；Back pressure check valve is set in the exit of oil returning tube；Described
Superposition valve group includes reversal valve, hydraulic control one-way valve and one-way throttle valve；The reversal valve includes reversal valve first input end, commutation
The input of valve second and reversal valve output end, described reversal valve first input end are connected with oil supply pipe, described commutation
The input of valve second is connected with oil returning tube, and the output end of the reversal valve passes sequentially through hydraulic control one-way valve and one-way throttle valve
The described hydraulic cylinder of connection；Described repairing valve group includes throttle structure, pressure-reducing valve and stop valve composition.
Alternatively, described throttle structure is throttle orifice or choke valve.
Alternatively, described reversal valve is three position four-way directional control valve, and described hydraulic cylinder is hydraulic piston rod cylinder, its piston
Both ends are respectively equipped with hydraulic cylinder rod chamber and hydraulic cylinder rodless cavity；Described hydraulic control one-way valve is A chambers and B chamber hydraulic control one-way valves；
Described one-way throttle valve is A chambers and B chamber choke valves；Described reversal valve output end is two, and respectively reversal valve first is defeated
Go out end and the output end of reversal valve second；The described output end of reversal valve first is connected by A chambers hydraulic control one-way valve with A chamber choke valves
Described hydraulic cylinder rodless cavity, the described output end of reversal valve second pass through described in B chambers hydraulic control one-way valve and the connection of B chambers choke valve
Hydraulic cylinder rod chamber.
Alternatively, be additionally provided with described repairing valve group be connected with throttle structure and pressure-reducing valve be used for open or close
The stop valve of the repairing valve group.
Alternatively, pressure-reducing valve oil inlet, pressure-reducing valve drain tap and decompression valve outlet are set on described pressure-reducing valve；Described
Stop valve has three, respectively the first stop valve, the second stop valve and the 3rd stop valve；Described first stop valve one end with
Oil supply pipe is connected, and the other end is connected by throttle orifice with pressure-reducing valve oil inlet；Described decompression valve outlet passes through the second cut-off
Valve is connected with oil returning tube；Described pressure-reducing valve drain tap is connected by the 3rd stop valve with oil returning tube.
Alternatively, described superposition valve group has several, and its structure is completely the same, is connected in parallel on oil supply pipe and oil return pipe
Between road.
Alternatively, described hydraulic cylinder is piston hydraulic cylinder.
Alternatively, the pressure-reducing valve is threeway proportional pressure-reducing valve, three-way pressure reducing valve or common pressure-reducing valve.
The beneficial effects of the present invention are：
1st, the hydraulic control circuit of Blast Furnace Throat Ventilation Valve involved in the present invention, by repairing valve group directly with being superimposed valve group
Parallel connection is carried out, using common control power supply, without additional hydraulic cylinder, it is not necessary to newly-increased power and control power supply, save electric energy；
2nd, in the prior art low-lift pump to solving class by way of bleeding valve hydraulic control circuit oil back chamber repairing
As technical problem, because low pressure slippage pump ceaselessly operates, the continual supplement of hydraulic oil, if pressure superelevation, needs
By safety valve pressure release, loss of energy, the present invention ensure that pressure is not in by the connection design of throttle orifice and pressure-reducing valve
The situation of superelevation, not loss of energy；
3rd, in the prior art low-lift pump to solving class by way of bleeding valve hydraulic control circuit oil back chamber repairing
As technical problem, and by needing extemporaneous preparation pipeline between low pressure slippage pump and oil returning tube, add leakage point, institute of the present invention
The hydraulic control circuit for the Blast Furnace Throat Ventilation Valve being related to is integrated on the valve block of existing hydraulic valve platform, reduces leakage point；
4th, the hydraulic control circuit of Blast Furnace Throat Ventilation Valve involved in the present invention is not influenceed by external factor, control mode
Safer reliable control, it is simple and convenient, it is easy to implement.
Other advantages, target and the feature of the present invention will be illustrated in the following description to a certain extent, and
And to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, Huo Zheke
To be instructed from the practice of the present invention.The target and other advantages of the present invention can by following specification realizing and
Obtain.
Brief description of the drawings
In order that the object, technical solutions and advantages of the present invention are clearer, the present invention is made below in conjunction with accompanying drawing excellent
The detailed description of choosing, wherein：
Fig. 1 is the structural representation of the hydraulic control circuit of Blast Furnace Throat Ventilation Valve involved in the present invention.
Embodiment
Illustrate embodiments of the present invention below by way of specific instantiation, those skilled in the art can be by this specification
Disclosed content understands other advantages and effect of the present invention easily.The present invention can also pass through specific realities different in addition
The mode of applying is embodied or practiced, the various details in this specification can also be based on different viewpoints with application, without departing from
Various modifications or alterations are carried out under the spirit of the present invention.It should be noted that diagram provided in following examples is only to show
Meaning mode illustrates the basic conception of the present invention, and in the case where not conflicting, the feature in following examples can be mutually combined.
Referring to Fig. 1, the element numbers in accompanying drawing represent respectively：Oil supply pipe 1, back pressure check valve 2, reversal valve 3, hydraulic control
Check valve 4, one-way throttle valve 5, oil returning tube 6, hydraulic cylinder 7, stop valve 8, pressure-reducing valve 9, throttle structure 10.
The present invention relates to a kind of Blast Furnace Throat Ventilation Valve hydraulic control circuit, including oil supply pipe 1 and oil returning tube 6 and
For the hydraulic cylinder 7 of energy conversion, hydraulic oil is connected with oil supply pipe 1 and oil returning tube 6, in oil supply pipe 1 and oil return pipe
The repairing valve group and superposition valve group for keeping being full of fluid in oil returning tube 6 is parallel between road 6；In oil returning tube 6
Exit is provided with back pressure check valve 2；Described superposition valve group include be used for change hydraulic oil flow direction reversal valve 3, for making liquid
Force feed is in the hydraulic control one-way valve 4 of one-way flow and the one-way throttle valve 5 for adjusting hydraulic fluid flow rate；The reversal valve 3 wraps
Include the first input end of reversal valve 3, the input of reversal valve 3 second and the output end of reversal valve 3, the described first input end of reversal valve 3
It is connected with oil supply pipe 1, the described input of reversal valve 3 second is connected with oil returning tube 6, the output of the reversal valve 3
End passes sequentially through hydraulic control one-way valve 4 and one-way throttle valve 5 connects described hydraulic cylinder 7；Described repairing valve group is by being connected with each other
Be used for adjust the throttle structure 10 of hydraulic oil a fluid stream sectional area and 9 groups of pressure-reducing valve for reducing running of hydraulic power oil oil pressure
Into.Set using this kind and ensure that the oil returning tube 6 in device is remained full of low-pressure hydraulic oil, so as to prevent hydraulic cylinder
7 and the pipeline that is connected with hydraulic cylinder 7 in hydraulic oil emptying, ensure the reliability of bleeding valve action.
In practical operation, throttle structure 10 can be throttle orifice, and being realized in the present embodiment using the structure of throttle orifice should
Kind function, the simple and stable structure of throttle orifice, it is not necessary to drive, beneficial to the construction costs for reducing entirety.Specifically, the present embodiment
In employ φ 1.2 throttle orifice and throttled to realize at this.
Alternatively, the reversal valve 3 in the present embodiment employs three position four-way directional control valve and single-piston hydraulic cylinder to realize
The function of control loop.The piston both ends of the hydraulic cylinder 7 are respectively equipped with the rodless cavity of hydraulic cylinder 7 and the rod chamber of hydraulic cylinder 7；It is described
Hydraulic control one-way valve 4 be two, respectively A chambers hydraulic control one-way valve and B chamber hydraulic control one-way valves；Described one-way throttle valve 5 is two
It is individual, respectively A chambers choke valve and B chamber choke valves；The described output end of reversal valve 3 is two, and respectively reversal valve first exports
End and the output end of reversal valve second；The described output end of reversal valve first is connected institute by A chambers hydraulic control one-way valve with A chamber choke valves
The rodless cavity of hydraulic cylinder 7 stated, the described output end of reversal valve second pass through described in B chambers hydraulic control one-way valve and the connection of B chambers choke valve
The rod chamber of hydraulic cylinder 7.Pressure-reducing valve 9 in the present embodiment realizes this kind of function in the form of threeway proportional pressure-reducing valve, not
Identical function can also be realized in same embodiment using three-way pressure reducing valve or common pressure-reducing valve.
To realize the start and stop of repairing valve group and cutoff function, it is additionally provided with repairing valve group and throttle structure 10 and pressure-reducing valve
9 stop valves 8 for being used for the open or close repairing valve group being connected.Described pressure-reducing valve 9 is provided with pressure-reducing valve oil inlet, subtracted
Pressure valve drain tap and decompression valve outlet；Described stop valve 8 has three, respectively the first stop valve, the second stop valve and
3rd stop valve；First described stop valve one end is connected with oil supply pipe 1, and the other end is entered by throttle structure 10 with pressure-reducing valve
Hydraulic fluid port is connected；Described decompression valve outlet is connected by the second valve with oil returning tube 6；Described pressure-reducing valve oil return opening passes through the 3rd
Stop valve is connected with oil returning tube 6.
The principle of the present invention is as follows, and the high pressure liquid in oil supply pipe 1 is pressed oil and reduces its pressure by pressure-reducing valve 9, will be pressed
Power is decreased to 0.6~1.0MPa low-pressure hydraulic oil；The setting value of back pressure check valve 2 is about 1.2MPa, and low-pressure hydraulic oil passes through
Pressure-reducing valve 9 pressure adjustment make its size just ensure with oil returning tube 6 hydraulic oil it is dead-weight balanced, prevent hydraulic cylinder 7, with
And the hydraulic oil emptying in the oil pipe being connected with the rodless cavity of hydraulic cylinder 7 and rod chamber, ensure that the action of bleeding valve can
By property and security.
The present invention need not increase power and control power supply newly, do not influenceed by external factor, can be directly integrated in existing liquid
On the valve block of pressure valve platform, implementation cost is relatively low, can meet the requirement in emergency circumstances quickly opening bleeding valve, Ke Yibao
Demonstrate,prove the production safety of blast furnace operation.The emptying of hydraulic cylinder, hydraulic oil in oil-piping can be prevented, ensures the action of bleeding valve
Securely and reliably.
Finally illustrate, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although with reference to compared with
The present invention is described in detail good embodiment, it will be understood by those within the art that, can be to the skill of the present invention
Art scheme is modified or equivalent substitution, and without departing from the objective and scope of the technical program, it all should cover in the present invention
Right among.
Claims (8)
1. a kind of Blast Furnace Throat Ventilation Valve hydraulic control circuit, including repairing valve group, superposition valve group, hydraulic cylinder, oil supply pipe, return
Oil-piping and the connecting pipe of superposition valve group and hydraulic cylinder, it is characterised in that：
It is disposed between oil supply pipe and oil returning tube for the repairing valve group of oil returning tube repairing；
Described repairing valve group is made up of throttle structure, pressure-reducing valve and stop valve；
Back pressure check valve is provided with the exit of oil returning tube；
The superposition valve group for controlling hydraulic cylinder to act, described superposition valve group bag are disposed between oil supply pipe and oil returning tube
Include reversal valve, hydraulic control one-way valve and one-way throttle valve；
The reversal valve includes reversal valve first input end, the input of reversal valve second and reversal valve output end, described commutation
Valve first input end is connected with oil supply pipe, and the described input of reversal valve second is connected with oil returning tube, the commutation
The output end of valve passes sequentially through hydraulic control one-way valve and one-way throttle valve connection liquid cylinder pressure.
2. Blast Furnace Throat Ventilation Valve hydraulic control circuit as described in claim 1, it is characterised in that：Described throttle structure
For throttle orifice or choke valve.
3. Blast Furnace Throat Ventilation Valve hydraulic control circuit as described in claim 1, it is characterised in that：Described reversal valve is
Three position four-way directional control valve, described hydraulic cylinder are hydraulic piston rod cylinder, and its piston end is rodless cavity, and rod end is rod chamber；It is described
Hydraulic control one-way valve be A chambers hydraulic control one-way valve and B chamber hydraulic control one-way valves；Described one-way throttle valve is A chambers choke valve and B chamber sections
Flow valve；Described reversal valve output end is two, the respectively output end of reversal valve first and the output end of reversal valve second；Described
The output end of reversal valve first is connected described hydraulic cylinder rodless cavity, described commutation by A chambers hydraulic control one-way valve with A chamber choke valves
The output end of valve second connects described hydraulic cylinder rod chamber by B chambers hydraulic control one-way valve and B chambers choke valve.
4. Blast Furnace Throat Ventilation Valve hydraulic control circuit as described in claim 1, it is characterised in that：Described repairing valve group
On be additionally provided with the stop valve for being used for the open or close repairing valve group being connected with throttle structure and pressure-reducing valve.
5. Blast Furnace Throat Ventilation Valve hydraulic control circuit as described in claim 4, it is characterised in that：On described pressure-reducing valve
Provided with pressure-reducing valve oil inlet, pressure-reducing valve drain tap and decompression valve outlet；Described stop valve has three, the respectively first cut-off
Valve, the second stop valve and the 3rd stop valve；First described stop valve one end is connected with oil supply pipe, and the other end passes through throttling
Structure is connected with pressure-reducing valve oil inlet；Described decompression valve outlet is connected by the second stop valve with oil returning tube；Described subtracts
Pressure valve drain tap is connected by the 3rd stop valve with oil returning tube.
6. Blast Furnace Throat Ventilation Valve hydraulic control circuit as described in claim 1, it is characterised in that：Described superposition valve group
There are several, its structure is completely the same, is connected in parallel between oil supply pipe and oil returning tube.
7. Blast Furnace Throat Ventilation Valve hydraulic control circuit as described in claim 3, it is characterised in that：Described hydraulic cylinder is
Piston hydraulic cylinder.
8. Blast Furnace Throat Ventilation Valve hydraulic control circuit as described in claim 1, it is characterised in that：The pressure-reducing valve is three
Logical proportional pressure-reducing valve, three-way pressure reducing valve or common pressure-reducing valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711171441.8A CN107747570B (en) | 2017-11-21 | 2017-11-21 | A kind of Blast Furnace Throat Ventilation Valve hydraulic control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711171441.8A CN107747570B (en) | 2017-11-21 | 2017-11-21 | A kind of Blast Furnace Throat Ventilation Valve hydraulic control circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107747570A true CN107747570A (en) | 2018-03-02 |
| CN107747570B CN107747570B (en) | 2019-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711171441.8A Active CN107747570B (en) | 2017-11-21 | 2017-11-21 | A kind of Blast Furnace Throat Ventilation Valve hydraulic control circuit |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3964518A (en) * | 1974-10-02 | 1976-06-22 | Robert Bosch G.M.B.H. | Electrohydraulic control unit |
| CN2823682Y (en) * | 2005-09-01 | 2006-10-04 | 中冶南方工程技术有限公司 | Driving hydraulic device for bleeding valve of blast furnace top |
| CN205908544U (en) * | 2016-06-29 | 2017-01-25 | 上汽通用五菱汽车股份有限公司 | Safety control and system of automobile body transfer chain |
| CN106917782A (en) * | 2017-04-19 | 2017-07-04 | 中冶赛迪工程技术股份有限公司 | A kind of device for preventing discharging valve for top of blast furnace hydraulic cylinder and pipeline evacuation |
| CN207437476U (en) * | 2017-11-21 | 2018-06-01 | 中冶赛迪工程技术股份有限公司 | A kind of Blast Furnace Throat Ventilation Valve hydraulic control circuit |
-
2017
- 2017-11-21 CN CN201711171441.8A patent/CN107747570B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3964518A (en) * | 1974-10-02 | 1976-06-22 | Robert Bosch G.M.B.H. | Electrohydraulic control unit |
| CN2823682Y (en) * | 2005-09-01 | 2006-10-04 | 中冶南方工程技术有限公司 | Driving hydraulic device for bleeding valve of blast furnace top |
| CN205908544U (en) * | 2016-06-29 | 2017-01-25 | 上汽通用五菱汽车股份有限公司 | Safety control and system of automobile body transfer chain |
| CN106917782A (en) * | 2017-04-19 | 2017-07-04 | 中冶赛迪工程技术股份有限公司 | A kind of device for preventing discharging valve for top of blast furnace hydraulic cylinder and pipeline evacuation |
| CN207437476U (en) * | 2017-11-21 | 2018-06-01 | 中冶赛迪工程技术股份有限公司 | A kind of Blast Furnace Throat Ventilation Valve hydraulic control circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107747570B (en) | 2019-07-16 |
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