CN107747570B - 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
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- CN107747570B CN107747570B CN201711171441.8A CN201711171441A CN107747570B CN 107747570 B CN107747570 B CN 107747570B CN 201711171441 A CN201711171441 A CN 201711171441A CN 107747570 B CN107747570 B CN 107747570B
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- valve
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- hydraulic control
- chamber
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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
- F15B11/08—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, be related to a kind of Blast Furnace Throat Ventilation Valve hydraulic control circuit: the repairing valve group and superposition valve group of setting control the normal opening and closing of Blast Furnace Throat Ventilation Valve.The superposition valve group is sequentially connected by reversal valve, hydraulic control one-way valve and one-way throttle valve and passes through pipeline and connect with hydraulic cylinder, the repairing valve group is made of throttle orifice, pressure reducing valve and shut-off valve, the hydraulic oil emptying that high pressure liquid pressure oil is adjusted to low-pressure hydraulic oil to oil returning tube repairing, in the oil pipe for preventing two chamber of hydraulic cylinder and two chamber of hydraulic cylinder to be connected by the pressure of pressure reducing valve；Solve the problems, such as that Blast Furnace Throat Ventilation Valve can not be opened in time due to hydraulic oil empties in two chamber of hydraulic cylinder and connecting pipe.
Description
Technical field
The invention belongs to field of metallurgy, are related to a kind of Blast Furnace Throat Ventilation Valve hydraulic control circuit.
Background technique
Bleeding valve is the heavy caliber safety valve that blast furnace roof prevents press to be arranged more than safety value, 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 set
On the main platform of furnace roof of about 40m high, and diffuse valve body and hydraulic cylinder is arranged on the highest platform of furnace roof, the two height difference will
Nearly 50m.
However, hydraulic control valve platform can just control hydraulic cylinder movement only when furnace roof carries out maintenance or accident condition,
Bleeding valve is opened, therefore bleeding valve is in non-action state for a long time under normal circumstances.The release of another aspect furnace roof
Hydraulic control one-way valve in the hydraulic control circuit of valve not can guarantee in prolonged situation not to be leaked, even if in oil returning tube
The check valve of upper installation high back pressure can similarly generate leakage.In this way in hydraulic cylinder and the oil pipe being connected with two chamber of hydraulic cylinder
Hydraulic oil can be because leaking lasting emptying, so as to cause hydraulic cylinder and the oil pipe being connected with two chamber of hydraulic cylinder due to the effect of self weight
Interior gassy is emptied.
When bleeding valve requires to act immediately, it is necessary to after first filling liquid pressure oil fills up two chamber of diffusion valve hydraulic cylinder and pipeline
Bleeding valve could be driven, the requirement in emergency circumstances quickly opened is unable to satisfy, may cause serious production accident.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of Blast Furnace Throat Ventilation Valve hydraulic cylinder and pipeline evacuations of preventing
Hydraulic control circuit.
In order to achieve the above objectives, the invention provides the 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 for being superimposed valve group and hydraulic cylinder；Back pressure check valve is set in the exit of oil returning tube；Described
Being superimposed 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 second input terminal of valve and reversal valve output end, the reversal valve first input end are connected with oil supply pipe, the commutation
The second input terminal of valve 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 connection hydraulic cylinder；The repairing valve group includes throttle structure, pressure reducing valve and shut-off valve composition.
Optionally, the throttle structure is throttle orifice or throttle valve.
Optionally, the reversal valve is three position four-way directional control valve, and the hydraulic cylinder is hydraulic piston rod cylinder, piston
Both ends are respectively equipped with hydraulic cylinder rod chamber and hydraulic cylinder rodless cavity；The hydraulic control one-way valve is A chamber and B chamber hydraulic control one-way valve；
The one-way throttle valve is A chamber and B chamber throttle valve；The reversal valve output end is two, and respectively reversal valve first is defeated
Outlet and reversal valve second output terminal；First output end of reversal valve is connect by A chamber hydraulic control one-way valve with A chamber throttle valve
The hydraulic cylinder rodless cavity, the reversal valve second output terminal pass through described in B chamber hydraulic control one-way valve and the connection of B chamber throttle valve
Hydraulic cylinder rod chamber.
Optionally, be additionally provided in the repairing valve group be connected with throttle structure and pressure reducing valve being used to open or being closed
The shut-off valve of the repairing valve group.
Optionally, pressure reducing valve oil inlet, pressure reducing valve drain tap and decompression valve outlet are set on the pressure reducing valve；Described
There are three shut-off valves, respectively the first shut-off valve, the second shut-off valve and third shut-off valve；Described first shut-off valve one end with
Oil supply pipe is connected, and the other end is connected by throttle orifice with pressure reducing valve oil inlet；The decompression valve outlet passes through the second cut-off
Valve is connected with oil returning tube；The pressure reducing valve drain tap is connected by third shut-off valve with oil returning tube.
Optionally, the superposition valve group has several, and structure is completely the same, is connected in parallel on oil supply pipe and oil return pipe
Between road.
Optionally, the hydraulic cylinder is piston hydraulic cylinder.
Optionally, 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:
1, the hydraulic control circuit of Blast Furnace Throat Ventilation Valve according to the present invention, by repairing valve group directly be superimposed valve group
Parallel connection is carried out, using common control power supply, is not necessarily to additional hydraulic cylinder, do not need newly-increased power and controls power supply, saves electric energy；
2, 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, since 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 case where superelevation, not loss of energy；
3, 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 increase leakage point, institute of the present invention and by needing extemporaneous preparation pipeline between low pressure slippage pump and oil returning tube
The hydraulic control circuit for the Blast Furnace Throat Ventilation Valve being related to is integrated in the valve block of existing hydraulic valve platform, reduces leakage point；
4, the hydraulic control circuit of Blast Furnace Throat Ventilation Valve according to the present invention is not influenced by external factor, control mode
Safer reliable control, it is simple and convenient, it is easy to implement.
Other advantages, target and feature of the 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.Target of the invention and other advantages can be realized by following specification and
It obtains.
Detailed description of the invention
To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention is made below in conjunction with attached drawing excellent
The detailed description of choosing, in which:
Fig. 1 is the structural schematic diagram of the hydraulic control circuit of Blast Furnace Throat Ventilation Valve according to the present invention.
Specific embodiment
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification
Other advantages and efficacy of the present invention can be easily understood for disclosed content.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints and application, without departing from
Various modifications or alterations are carried out under spirit of the invention.It should be noted that diagram provided in following embodiment is only to show
Meaning mode illustrates basic conception of the invention, and in the absence of conflict, the feature in following embodiment can be combined with each other.
Referring to Fig. 1, the element numbers in attached drawing respectively indicate: 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, shut-off 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, it is connected with hydraulic oil in oil supply pipe 1 and oil returning tube 6, in oil supply pipe 1 and oil return pipe
Be parallel between road 6 for keep in oil returning tube 6 full of oil liquid repairing valve group and superposition valve group；In oil returning tube 6
Exit is equipped with back pressure check valve 2；The superposition valve group includes for changing the reversal valve 3 of hydraulic oil flow direction, for making liquid
Pressure oil 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 3 first input end of reversal valve, 3 second input terminal of reversal valve and 3 output end of reversal valve, 3 first input end of reversal valve
It is connected with oil supply pipe 1,3 second input terminal of reversal valve 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 the hydraulic cylinder 7；The repairing valve group is by being connected with each other
The throttle structure 10 for adjusting hydraulic oil a fluid stream sectional area and 9 groups of pressure reducing valve for reducing running of hydraulic power oil oil pressure
At.It ensure that the oil returning tube 6 in device is remained full of low-pressure hydraulic oil using this kind setting, to prevent hydraulic cylinder
7 and the pipeline that is connected with hydraulic cylinder 7 in hydraulic oil emptying, guarantee the reliability of bleeding valve movement.
In actual 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 do not need to drive, conducive to whole project cost is reduced.Specifically, the present embodiment
In using φ 1.2 throttle orifice come realize at this throttle.
Optionally, the reversal valve 3 in the present embodiment uses 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 7 rod chamber of 7 rodless cavity of hydraulic cylinder and hydraulic cylinder；It is described
Hydraulic control one-way valve 4 be two, respectively A chamber hydraulic control one-way valve and B chamber hydraulic control one-way valve；The one-way throttle valve 5 is two
It is a, respectively A chamber throttle valve and B chamber throttle valve；3 output end of reversal valve is two, and respectively reversal valve first exports
End and reversal valve second output terminal；First output end of reversal valve connect institute with A chamber throttle valve by A chamber hydraulic control one-way valve
7 rodless cavity of hydraulic cylinder stated, the reversal valve second output terminal pass through described in B chamber hydraulic control one-way valve and the connection of B chamber throttle valve
7 rod chamber of hydraulic cylinder.Pressure reducing valve 9 in the present embodiment realizes this kind of function in the form of threeway proportional pressure-reducing valve, not
Three-way pressure reducing valve or common pressure reducing valve can be used also to realize identical function in same embodiment.
For start and stop and the cutoff function for realizing repairing valve group, it is additionally provided in repairing valve group and throttle structure 10 and pressure reducing valve
9 shut-off valves 8 for being used to open or being closed the repairing valve group being connected.The pressure reducing valve 9 is equipped with pressure reducing valve oil inlet, subtracts
Pressure valve drain tap and decompression valve outlet；There are three the shut-off valves 8, respectively the first shut-off valve, the second shut-off valve and
Third shut-off valve；The first described shut-off valve one end is connected with oil supply pipe 1, the other end by throttle structure 10 and pressure reducing valve into
Hydraulic fluid port is connected；The decompression valve outlet is connected by the second valve with oil returning tube 6；The pressure reducing valve oil return opening passes through third
Shut-off valve is connected with oil returning tube 6.
The principle of the present invention is as follows, and the high pressure liquid pressure oil in oil supply pipe 1 is reduced its pressure by pressure reducing valve 9, will be pressed
Power is decreased to the low-pressure hydraulic oil of 0.6~1.0MPa；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 guarantee in 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, guarantee that the movement of bleeding valve can
By property and safety.
The present invention does not need newly-increased power and controls power supply, is not influenced by external factor, can be directly integrated in existing liquid
In the valve block of pressure valve platform, implementation cost is lower, can satisfy the requirement in emergency circumstances quickly opening bleeding valve, Ke Yibao
Demonstrate,prove the production safety of blast furnace operation.The emptying that can prevent hydraulic cylinder, hydraulic oil in oil-piping, guarantees the movement of bleeding valve
Securely and reliably.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with
Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of the technical program, should all be covered in the present invention
Scope of the claims in.
Claims (7)
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 for being superimposed 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 to oil returning tube repairing；
The repairing valve group is made of throttle structure, pressure reducing valve and shut-off valve；
Back pressure check valve is equipped in the exit of oil returning tube；The outlet of the repairing valve group is connected to the back pressure check valve
Entrance；Hydraulic oil by the adjustment of the pressure of pressure reducing valve make its size just guarantee in oil returning tube hydraulic oil it is dead-weight balanced,
Hydraulic cylinder is prevented, and the hydraulic oil emptying in the oil pipe being connected with the rodless cavity of hydraulic cylinder and rod chamber；
The superposition valve group for controlling hydraulic cylinder movement, the superposition valve group packet 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 second input terminal of reversal valve and reversal valve output end, the commutation
Valve first input end is connected with oil supply pipe, and second input terminal of reversal valve 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: the throttle structure
For throttle orifice or throttle valve.
3. Blast Furnace Throat Ventilation Valve hydraulic control circuit as described in claim 1, it is characterised in that: the reversal valve is
Three position four-way directional control valve, the hydraulic cylinder are hydraulic piston rod cylinder, and piston end is rodless cavity, and rod end is rod chamber；It is described
Hydraulic control one-way valve be A chamber hydraulic control one-way valve and B chamber hydraulic control one-way valve；The one-way throttle valve is A chamber throttle valve and B chamber section
Flow valve；The reversal valve output end is two, respectively the first output end of reversal valve and reversal valve second output terminal；Described
The first output end of reversal valve connect the hydraulic cylinder rodless cavity, the commutation by A chamber hydraulic control one-way valve with A chamber throttle valve
The valve second output terminal hydraulic cylinder rod chamber described by B chamber hydraulic control one-way valve and the connection of B chamber throttle valve.
4. Blast Furnace Throat Ventilation Valve hydraulic control circuit as described in claim 1, it is characterised in that: the repairing valve group
On be additionally provided with the shut-off valve for being used to open or being closed the 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 the pressure reducing valve
Equipped with pressure reducing valve oil inlet, pressure reducing valve drain tap and decompression valve outlet；There are three the shut-off valves, the respectively first cut-off
Valve, the second shut-off valve and third shut-off valve；The first described shut-off 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；The decompression valve outlet is connected by the second shut-off valve with oil returning tube；Described subtracts
Pressure valve drain tap is connected by third shut-off valve with oil returning tube.
6. Blast Furnace Throat Ventilation Valve hydraulic control circuit as described in claim 1, it is characterised in that: the superposition valve group
There are several, 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 1, it is characterised in that: the pressure reducing valve is three
Logical proportional 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 |
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| Publication Number | Publication Date |
|---|---|
| CN107747570A CN107747570A (en) | 2018-03-02 |
| CN107747570B true 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 |
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| Publication number | Publication date |
|---|---|
| CN107747570A (en) | 2018-03-02 |
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