CN207437476U - 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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- CN207437476U CN207437476U CN201721569468.8U CN201721569468U CN207437476U CN 207437476 U CN207437476 U CN 207437476U CN 201721569468 U CN201721569468 U CN 201721569468U CN 207437476 U CN207437476 U CN 207437476U
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Abstract
The utility model 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.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 is connected with hydraulic cylinder, the repairing valve group is made of throttle orifice, pressure reducing valve and shut-off valve, high pressure liquid pressure oil is adjusted to low-pressure hydraulic oil to oil returning tube repairing by the pressure of pressure reducing valve, prevents the hydraulic oil emptying in oil pipe that two chamber of hydraulic cylinder and two chamber of hydraulic cylinder be connected；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 utility model 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 to be more than safety value and sets, 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 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, 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 bleeding valve is in non-action state for a long time under normal circumstances.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 that for a long time, even if in oil returning tube
The check valve of upper installation high back pressure can similarly generate leakage.So in hydraulic cylinder and the oil pipe being connected with two chamber of hydraulic cylinder
Hydraulic oil can be because leaking lasting emptying, the oil pipe being connected so as to cause hydraulic cylinder and with two chamber of hydraulic cylinder due to the effect of dead weight
Interior gassy is emptied.
When bleeding valve requirement acts 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 can not be met, serious production accident may be caused.
Utility model content
In view of this, the purpose of this utility model is to provide one kind to prevent Blast Furnace Throat Ventilation Valve hydraulic cylinder and tubes rows
Empty hydraulic control circuit.
In order to achieve the above objectives, the utility model provides following technical solution：
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 superposition valve group and the connecting pipe of 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 terminal, 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 terminal 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 be three position four-way directional control valve, the hydraulic cylinder be 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 chambers and B chamber hydraulic control one-way valves；
The one-way throttle valve is A chambers and B chamber throttle valves；The reversal valve output terminal is two, is respectively that reversal valve first is defeated
Outlet and reversal valve second output terminal；First output terminal of reversal valve is connected by A chambers hydraulic control one-way valve with A chamber throttle valves
The hydraulic cylinder rodless cavity, the reversal valve second output terminal pass through described in B chambers hydraulic control one-way valve and the connection of B chambers 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, is respectively the first shut-off valve, the second shut-off valve and the 3rd 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 the 3rd 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 utility model are：
1st, the hydraulic control circuit of the Blast Furnace Throat Ventilation Valve involved by the utility model, by repairing valve group directly with being superimposed
Valve group carries out parallel connection, using common control power supply, without additional hydraulic cylinder, need not increase power and control power supply newly, save
Electric energy；
2nd, class is solved by way of bleeding valve hydraulic control circuit oil back chamber repairing low-lift pump in the prior art
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 utility model ensure that pressure will not by the connection design of throttle orifice and pressure reducing valve
There is the situation of superelevation, not loss of energy；
3rd, class is solved by way of bleeding valve hydraulic control circuit oil back chamber repairing low-lift pump in the prior art
As technical problem, and by needing extemporaneous preparation pipeline between low pressure slippage pump and oil returning tube, add leakage point, this practicality is new
The hydraulic control circuit of Blast Furnace Throat Ventilation Valve involved by type is integrated on the valve block of existing hydraulic valve platform, reduces leakage point；
4th, the hydraulic control circuit of the Blast Furnace Throat Ventilation Valve involved by the utility model influences from external factor, control
The safer reliable control of mode, it is simple and convenient, it is easy to implement.
Other advantages, target and feature of the utility model will be explained in the following description to a certain extent
State, and to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter or
Person can be instructed from the practice of the utility model.The target of the utility model and other advantages can be said by following
Bright book is realized and obtained.
Description of the drawings
In order to make the purpose of this utility model, technical solution and advantage clearer, below in conjunction with attached drawing to this practicality
It is new to be preferably described in detail, wherein：
Fig. 1 is the structure diagram of the hydraulic control circuit of the Blast Furnace Throat Ventilation Valve involved by the utility model.
Specific embodiment
Illustrate the embodiment of the utility model below by way of specific specific example, those skilled in the art can be by this theory
Content disclosed by bright book understands other advantages and function of the utility model easily.The utility model can also be by addition
Different specific embodiments are embodied or practiced, and the various details in this specification can also be based on different viewpoints with answering
With carrying out various modifications or alterations under the spirit without departing from the utility model.It should be noted that institute in following embodiment
The diagram of offer only illustrates the basic conception of the utility model in a schematic way, in the case where there is no conflict, in following embodiment
Feature can be mutually combined.
Referring to Fig. 1, the element numbers in attached 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, shut-off valve 8, pressure reducing valve 9, throttle structure 10.
The utility model is related to a kind of Blast Furnace Throat Ventilation Valve hydraulic control circuit, including oil supply pipe 1 and oil returning tube 6
And the hydraulic cylinder 7 for energy conversion, hydraulic oil is connected in oil supply pipe 1 and oil returning tube 6, in oil supply pipe 1 and is returned
It is parallel with to keep between oil-piping 6 to be full of the repairing valve group of fluid in oil returning tube 6 and is superimposed valve group；In oil returning tube
6 exit is equipped with back pressure check valve 2；The superposition valve group includes the reversal valve 3 for changing hydraulic oil flow direction, for making
Hydraulic 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
Including 3 first input end of reversal valve, 3 second input terminal of reversal valve and 3 output terminal of reversal valve, the reversal valve 3 first input
End be connected with oil supply pipe 1,3 second input terminal of reversal valve is connected with oil returning tube 6, the reversal valve 3 it is defeated
Outlet 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 mutually interconnecting
The throttle structure 10 for being used to adjust hydraulic oil a fluid stream sectional area connect and 9 groups of the pressure reducing valve for reducing running of hydraulic power oil oil pressure
Into.It ensure that the oil returning tube 6 in device is remained full of low-pressure hydraulic oil using this kind setting, 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 need not drive, beneficial to the project cost for reducing entirety.Specifically, the present embodiment
In employ the throttle orifice of φ 1.2 realize at this throttle.
Optionally, 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 7 rod chamber of 7 rodless cavity of hydraulic cylinder and hydraulic cylinder；It is described
Hydraulic control one-way valve 4 for two, be respectively A chambers hydraulic control one-way valve and B chamber hydraulic control one-way valves；The one-way throttle valve 5 is two
It is a, it is respectively A chambers throttle valve and B chamber throttle valves；3 output terminal of reversal valve is two, is respectively that reversal valve first exports
End and reversal valve second output terminal；First output terminal of reversal valve is connected institute by A chambers hydraulic control one-way valve with A chamber throttle valves
7 rodless cavity of hydraulic cylinder stated, the reversal valve second output terminal pass through described in B chambers hydraulic control one-way valve and the connection of B chambers 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
With embodiment in identical function can also be realized 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 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, be respectively the first shut-off valve, the second shut-off valve and
3rd 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 the 3rd
Shut-off valve is connected with oil returning tube 6.
The principle of the utility model is as follows, and the high pressure liquid pressure oil in oil supply pipe 1 is reduced its pressure by pressure reducing valve 9,
Pressure 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, low-pressure hydraulic oil
By the adjustment of the pressure of pressure reducing valve 9 make its size just ensure in oil returning tube 6 hydraulic oil it is dead-weight balanced, prevent hydraulic cylinder
7 and the oil pipe that is connected with the rodless cavity of hydraulic cylinder 7 and rod chamber in hydraulic oil emptying, ensure the dynamic of bleeding valve
Make reliability and security.
The utility model need not increase power and control power supply newly, influence, can be directly integrated in from external factor
Have on the valve block of hydraulic valve platform, implementation cost is relatively low, can meet the requirement in emergency circumstances quickly opening bleeding valve, can
To ensure the production safety of blast furnace operation.It can prevent the emptying of hydraulic cylinder, hydraulic oil in oil-piping, ensure bleeding valve
Action is safe and reliable.
Finally illustrate, above example is merely intended for describing the technical solutions of the present application, but not for limiting the present application, although ginseng
The utility model is described in detail according to preferred embodiment, it will be understood by those of ordinary skill in the art that, it can be to this
The technical solution of utility model is modified or replaced equivalently, should all without departing from the objective and scope of the technical program
Cover among the right of the utility model.
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 superposition valve group and the connecting pipe of 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；
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 superposition valve group that hydraulic cylinder is controlled to act, the 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 second input terminal of reversal valve and reversal valve output terminal, 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 terminal 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 chambers hydraulic control one-way valve and B chamber hydraulic control one-way valves；The one-way throttle valve is A chambers throttle valve and B chamber sections
Flow valve；The reversal valve output terminal is two, is respectively the first output terminal of reversal valve and reversal valve second output terminal；Described
The first output terminal of reversal valve is connected the hydraulic cylinder rodless cavity, the commutation by A chambers hydraulic control one-way valve with A chamber throttle valves
Valve second output terminal passes through B chambers hydraulic control one-way valve and the connection of B chambers throttle valve the hydraulic cylinder rod chamber.
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, is respectively the first cut-off
Valve, the second shut-off valve and the 3rd 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 the 3rd 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 3, it is characterised in that：The 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 |
|---|---|---|---|
| CN201721569468.8U CN207437476U (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 |
|---|---|---|---|
| CN201721569468.8U CN207437476U (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 |
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| CN207437476U true CN207437476U (en) | 2018-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721569468.8U Active CN207437476U (en) | 2017-11-21 | 2017-11-21 | A kind of Blast Furnace Throat Ventilation Valve hydraulic control circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107747570A (en) * | 2017-11-21 | 2018-03-02 | 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 CN201721569468.8U patent/CN207437476U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107747570A (en) * | 2017-11-21 | 2018-03-02 | 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 |
| CN107747570B (en) * | 2017-11-21 | 2019-07-16 | 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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