CN207349553U - One kind automatically shuts down hydraulic butterfly valve - Google Patents
One kind automatically shuts down hydraulic butterfly valve Download PDFInfo
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- CN207349553U CN207349553U CN201721430955.6U CN201721430955U CN207349553U CN 207349553 U CN207349553 U CN 207349553U CN 201721430955 U CN201721430955 U CN 201721430955U CN 207349553 U CN207349553 U CN 207349553U
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Abstract
The utility model discloses one kind to automatically shut down hydraulic butterfly valve, including valve body, it is arranged on the hydraulic cylinder being connected on valve body with hydraulic control system, with being arranged on the counterweight that rotatable valve rod is connected by mechanical component on valve body, hydraulic control system by outside the rodless cavity of hydraulic cylinder sequentially connected oil return one-way throttle valve, oil inlet one-way throttle valve, cut-off type electromagnetic direction valve form, the P mouths of cut-off type electromagnetic direction valve are connected with hydraulic oil source by check valve I, T mouthfuls are connected with hydraulic oil-returning pipe by check valve II, and A mouthfuls are connected with oil inlet one-way throttle valve.The utility model hydraulic pressure butterfly valve is not required external pressure oily when having a power failure or needing to close or other energy, and with regard to that can be automatically closed, and closed safe is reliable.
Description
Technical field
The utility model belongs to Ferrous Metallurgy field of mechanical technique, and more particularly to one kind automatically shuts down hydraulic butterfly valve.
Background technology
Hydraulic butterfly valve is widely used in the coal gas or other media pipe control link in the regions such as blast furnace in metallurgical industry, converter
Valve arrangement.Such as the gas stop valve of hot-blast stove, gas-fired valve, subtracting in the equal of furnace roof, purge valve, clean coal gas pipe network
Pressure valve group, fast cut valve etc..Wherein, a big chunk butterfly valve uses hydraulic control, i.e., controls the flexible of hydraulic cylinder by pressure oil
Realize the opening and closing of butterfly valve plate, play the role of opening or closing coal gas or other media pipe path.Moreover, under many operating modes
It is required for butterfly valve emergency cut-off to ensure the safety of whole system.Such as the gas stop valve and coal gas of blast-furnace hot-air furnace system
Combustion valve, when power failure or other failures occur for hot blast stove system, it usually needs this two classes butterfly valve is closed in a short time, it is no
Then, coal gas and air mixing in flue may be caused, causes the serious security incidents such as hot-blast stove explosion.
In normal conditions, hydraulic system works normally, and the equipment such as continual valve into system provides pressure
Oil, the hydraulic butterfly valve in system can be operated according to program requirement or personnel requires normal opening and closing in time；When hydraulic system occurs
Failure occurs to have a power failure when accident, can not provide hydraulic oil source.The accumulator in hydraulic system is usually leaned at this time as emergent
Power source, by butterfly valve emergency cut-off, still, if accumulator safeguard be not good at or much time using after the reason such as seal aging,
The problems such as being likely to occur emergency power supply failure or off-capacity, in addition, this equipment own cost of accumulator is higher, charge and discharge
Nitrogen is comparatively laborious, and maintenance and maintenance need the factors such as higher professional skill also to cause it to keep normal condition relatively more tired for a long time
It is difficult.In industry have occurred and that the severe safety accident that repeatedly butterfly valve cannot in time be closed and occurred caused by accumulator fails.
To solve problem above, existing metallurgy industry mainly still improves the reliability of accumulator equipment using method,
For example select the piston accumulator group with piston position detection signal to replace bag type accumulator, strengthen the monitoring of equipment；Compile
The maintenance instruction of specialty is made, formulates accumulator maintenance handbook, strengthens safeguarding training etc..In short, in case of emergency to close
Butterfly valve be unable to do without the emergency power supply that accumulator group provides all the time.
Utility model content
In view of this, the purpose of this utility model is to provide one kind to automatically shut down hydraulic butterfly valve, to solve hydraulic butterfly valve
Without power source when in case of emergency closing, and No leakage is closed, and it is reasonable with overall construction design, it is easy to operate, fast
Speed, securely and reliably, it is of low cost the advantages of.
To reach above-mentioned purpose, the utility model is achieved through the following technical solutions：
The utility model provides one kind and automatically shuts down hydraulic butterfly valve, including valve body, is arranged on valve body and hydraulic control system
Unite connection hydraulic cylinder, with being arranged on the counterweight that rotatable valve rod is connected by mechanical component on valve body, the hydraulic control
System is by sequentially connected oil return one-way throttle valve, oil inlet one-way throttle valve, cut-off type electromagnetism side outside the rodless cavity of hydraulic cylinder
To valve group into the P mouths of cut-off type electromagnetic direction valve are connected with hydraulic oil source by check valve I, and T mouthfuls pass through list with hydraulic oil-returning pipe
To valve II connections, A mouthfuls are connected with oil inlet one-way throttle valve.
Further, it is provided with ball valve between hydraulic oil source and the check valve I.
Further, the hydraulic cylinder is plunger case of the rod chamber with spring.
The utility model also provides one kind and automatically shuts down hydraulic butterfly valve, the cut-off type electromagnetism side of above-mentioned hydraulic control system
Solenoid directional control valve is replaced with to valve, check valve II replaces with high back pressure check valve, and the P mouths of solenoid directional control valve pass through with hydraulic oil source
Check valve I connections, T mouthfuls are connected with hydraulic oil-returning pipe by high back pressure check valve, and A mouthfuls are connected with oil inlet one-way throttle valve, B mouthfuls of envelopes
Close, the rod chamber of hydraulic cylinder is connected to the T mouths of solenoid directional control valve.
Further, the mechanical component is long force arm type dual structure.
Compared with prior art, the advantageous effects of the utility model are：
(1) when power outage or hydraulic system fault occurs, butterfly valve can be automatically closed, it is not necessary to as accumulator
Emergency power supply, greatly improves the security of system.
(2) gravity of counterweight is closed in valve closing direction, guarantee butterfly valve No leakage when butterfly valve is closed, and closes valve
It is more reliable, and hydraulic oil source or emergency power supply pressurize is not required.
(3) scheme of valve is closed by counterweight and hydraulic cylinder rod cavity spring collective effect can make counter weight construction more compact, it is not necessary to
The long arm of force or the too big counterweight of volume, particularly suitable situation about being limited with butterfly valve running part installation space.
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.
Brief 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 described in further detail, wherein：
Fig. 1 is the structure diagram that the utility model automatically shuts down hydraulic butterfly valve；
Fig. 2 is to automatically shut down the embodiment schematic diagram that hydraulic butterfly valve is connected with hydraulic drive circuit；
Fig. 3 is to automatically shut down another embodiment schematic diagram that hydraulic butterfly valve is connected with hydraulic drive circuit.
Reference numeral, valve body 1, hydraulic control system 2, hydraulic cylinder 3, valve rod 4, mechanical component 5, counterweight 6, spring 7；Its
In, oil return one-way throttle valve 2a, oil inlet one-way throttle valve 2b, cut-off type electromagnetic direction valve 2c, solenoid directional control valve 2c ', check valve
I2d, check valve II2e, high back pressure check valve 2e ', ball valve 2f.
Embodiment
The preferred embodiment of the utility model will be described in detail below；It should be appreciated that preferred embodiment is only
Explanation the utility model, rather than in order to limit the scope of protection of the utility model.
Embodiment one：
As shown in attached drawing 1,2, one kind provided in this embodiment automatically shuts down hydraulic butterfly valve, is set on the valve body 1 of the butterfly valve
Have rotatable valve rod 4 and be fixed on the valve plate (unmarked) on valve rod 4 with valve seal, it is described be provided with valve body 1 with
Hydraulic control system 2 connect hydraulic cylinder 3, the counterweight 6 that valve rod 4 is connected by mechanical component 5, the hydraulic control system 2 by
Sequentially connected oil return one-way throttle valve 2a, oil inlet one-way throttle valve 2b, cut-off type electromagnetic direction valve outside the rodless cavity of hydraulic cylinder 3
2c is formed, and P mouths of cut-off type electromagnetic direction valve 2c be connected by check valve I2d with hydraulic oil source, T mouthfuls by check valve II2e and
Hydraulic oil-returning pipe connects, and A mouthfuls are connected with oil inlet one-way throttle valve 2b；Ball valve 2f is provided between hydraulic oil source and check valve I2d；
Hydraulic cylinder 3 is plunger case of the rod chamber with spring 7.
Specifically, counterweight 6 is by mechanical component 5 and 4 Hard link of valve rod, when 3 expanding-contracting action of hydraulic cylinder band ovable valve stem 4 rotates
Lift or put down counterweight 6, the oil inlet pipe P of matched hydraulic control system 2 is connected with hydraulic oil source, from oil inlet pipe P successively
Ball valve 2f, check valve I2d, the P mouths of cut-off type electromagnetic direction valve 2c are connected, and the T mouths of cut-off type electromagnetic direction valve 2c then pass through
Check valve II2e is connected with oil return pipe T, and the A mouths of cut-off type electromagnetic direction valve 2c are then unidirectional with oil inlet one-way throttle valve 2b, oil return
Throttle valve 2a connections, oil return one-way throttle valve 2a outlets are connected by sebific duct (unmarked) etc. with the rodless cavity of hydraulic cylinder 3.
The specific work process of the present embodiment is as follows：
When butterfly valve needs to open, the electromagnet (b) of the cut-off type electromagnetic direction valve 2c of hydraulic control system 2 must be electric, cuts
Only formula electromagnetic direction valve 2c commutates to right side working position；The high pressure oil that hydraulic oil source provides passes through oil inlet pipe P, ball valve 2f, unidirectional
Valve I2d enters the hydraulic fluid port P-A of cut-off type electromagnetic direction valve 2c, and by the throttle valve of oil inlet one-way throttle valve 2b, oil return unidirectionally saves
The check valve of valve 2a is flowed, into the rodless cavity of hydraulic cylinder 3, the piston rod extending action of hydraulic cylinder 3 is promoted, butterfly is opened until thorough
Valve, overcomes the gravity of counterweight 6, and counterweight 6 is lifted to peak, while the rod cavity spring 7 of compression hydraulic cylinder 3.Live in hydraulic cylinder 3
During stopper rod extending action, oil inlet one-way throttle valve 2b plays throttling action, the speed that control hydraulic cylinder 3 stretches out；Hydraulic pressure control
The electromagnet (b) of the cut-off type electromagnetic direction valve 2c of system 2 processed is always maintained at electric, and the high pressure oil that hydraulic oil source provides then is kept
Butterfly valve is always on.
When butterfly valve needs to close, electromagnet (b) dead electricity of the cut-off type electromagnetic direction valve 2c of hydraulic control system 2, cuts
Only formula electromagnetic direction valve 2c automatically reverts to left side working position.Under the action of 7 spring force of gravity and spring of counterweight 6, liquid
The fluid of 3 rodless cavity of cylinder pressure is back to the throttle valve of oil return one-way throttle valve 2a, the list of oil inlet one-way throttle valve 2b by oil-piping A
To valve, the A-T passages of cut-off type electromagnetic direction valve 2c, check valve II2e, the direct oil returns of oil return pipe T.In the process, start to close
The arm of force of counterweight 6 to shaft is smaller, it is necessary to valve be closed by 7 spring force of spring of hydraulic cylinder 3, when the piston rod of hydraulic cylinder 3 during valve
Gradually retract, spring force tapers into but the arm of force of counterweight 6 reaches full-size, and until thoroughly closing butterfly valve, counterweight 6 also reaches
Maximum moment, ensures that butterfly valve No leakage is closed by the gravitational moment of counterweight；In whole butterfly valve closing process, oil return one-way throttle valve
2a plays throttling action, the speed that control hydraulic cylinder is retracted.During valve is closed, the pressure oil of hydraulic oil source is in cut-off type electricity
The P mouths of magnetic direction valve 2c are blocked.So during whole butterfly valve is closed, it is not necessary to which hydraulic oil source provides any power.
When power outage occurs, the electromagnet (b) of the cut-off type electromagnetic direction valve 2c of hydraulic control system 2 loses automatically
Electricity, the process that butterfly valve is automatically closed are same as above, and are no longer applied and are stated.
Embodiment two：
As shown in Figure 3, the present embodiment difference from Example 1 is：The cut-off type of above-mentioned hydraulic control system 2
Electromagnetic direction valve 2c replaces with solenoid directional control valve 2c ', and check valve II2e replaces with high back pressure check valve 2e ', solenoid directional control valve 2c '
P mouths be connected with hydraulic oil source by check valve I2d, T mouthfuls are connected with hydraulic oil-returning pipe by high back pressure check valve 2e ', A mouthfuls with
The 2b connections of oil inlet one-way throttle valve, B mouthfuls of closings, the rod chamber of hydraulic cylinder 3 are connected to the T mouths of solenoid directional control valve 2e ', mechanical component
5 use long force arm type dual structure.In the case of well-to-do in some locus, hydraulic cylinder is double acting cylinder.
Specifically, counterweight 6 is carried by mechanical component 5 and 4 Hard link of valve rod when band ovable valve stem 4 rotates when hydraulic cylinder 3 acts
Rise or put down counterweight 6, the oil inlet pipe P of matched hydraulic control system 2 is connected with hydraulic oil source, from oil inlet pipe P successively into
Enter ball valve 2f, check valve I2d, be connected to the P mouths of solenoid directional control valve 2c '.The T mouths of solenoid directional control valve 2c ', hydraulic cylinder 3 have
Rod cavity is then connected with oil return pipe T at the same time, wherein, first oil return pipe T is provided with high back pressure check valve 2e '.Solenoid directional control valve 2c's '
B mouthfuls directly block, and are not connected with any pipeline, and the A mouths of solenoid directional control valve 2c ' are then unidirectional with oil inlet one-way throttle valve 2b, oil return
Throttle valve 2a connections, oil return one-way throttle valve 2a outlets are connected by (unmarked) such as sebific ducts with the rodless cavity of hydraulic cylinder 3.
The specific work process of the present embodiment is as follows：
When butterfly valve needs to open, the electromagnet (b) of the solenoid directional control valve 2c ' of hydraulic control system 2 obtains electric, electromagnetic switch
Valve 2c ' commutates to right side working position.The high pressure oil that hydraulic oil source provides enters electricity by oil inlet pipe P, ball valve 2f, check valve I2d
The hydraulic fluid port P-A of magnetic reversal valve 2c ', by the throttle valve of oil inlet one-way throttle valve 2b, the check valve of oil return one-way throttle valve 2a into
Enter the rodless cavity of hydraulic cylinder 3, promote the piston rod extending action of hydraulic cylinder 3, until thoroughly opening butterfly valve, overcome the weight of counterweight 6
Power, peak is lifted to by counterweight 6.During 3 piston rod extending action of hydraulic cylinder, oil inlet one-way throttle valve 2b plays throttling
Effect, the speed that control hydraulic cylinder 3 stretches out；Meanwhile the fluid of 3 rod chamber of hydraulic cylinder passes through oil pipe B, high back pressure check valve 2e ',
Oil return pipe T oil returns, because the B mouths of solenoid directional control valve 2c ' are blocked, the fluid of rod chamber can only pass through oil return pipe T oil returns.Hydraulic pressure control
The electromagnet (b) of the solenoid directional control valve 2c ' of system 2 processed is always maintained at electric, and the high pressure oil that hydraulic oil source provides then keeps butterfly valve
It is always on.
When butterfly valve needs to close, electromagnet (b) dead electricity of the solenoid directional control valve 2c ' of hydraulic control system 2, electromagnetic switch
Valve 2c ' automatically reverts to left side working position.Under the gravity of counterweight 6, the fluid of 3 rodless cavity of hydraulic cylinder by oil-piping A,
The throttle valve of the oil return one-way throttle valve 2a of hydraulic control system 2, the check valve of oil inlet one-way throttle valve 2b, solenoid directional control valve
The A-T passage oil returns of 2c ', which part fluid pass through high back pressure check valve 2e ', the direct oil returns of oil return pipe T, another part fluid
By oil pipe B, the rod chamber of hydraulic cylinder 3 is added to, in the process, the piston rod of hydraulic cylinder 3 is gradually retracted, until thoroughly closing
Butterfly valve is closed, and ensures that butterfly valve No leakage is closed by the gravity of counterweight 6；In whole butterfly valve closing process, high back pressure check valve 2e '
Back pressure cause oil return that there is certain pressure, avoid 3 rod chamber of hydraulic cylinder from being emptied in oil replenishing process；Closed in whole butterfly valve
During, oil return one-way throttle valve 2a plays throttling action, the speed that control hydraulic cylinder 3 is retracted.During valve is closed, hydraulic pressure
The pressure oil of oil sources is blocked in solenoid directional control valve P-B passages.So during whole butterfly valve is closed, it is not necessary to hydraulic pressure
Oil sources provides any power.
When power outage occurs, the automatic dead electricity of electromagnet (b) of the solenoid directional control valve 2c ' of hydraulic control system 2, butterfly valve
The process being automatically closed is same as above, and is no longer applied and is stated.
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, can be to this
The technical solution technical scheme is modified or replaced equivalently of utility model, without departing from the objective and scope of the technical program, it should all
Cover among the right of the utility model.
Claims (5)
1. one kind automatically shuts down hydraulic butterfly valve, including valve body (1), it is arranged on the liquid being connected on valve body with hydraulic control system (2)
Cylinder pressure (3), it is characterised in that further include and be arranged on rotatable valve rod (4) on valve body and matched somebody with somebody by what mechanical component (5) connected
Weight (6), the hydraulic control system is by sequentially connected oil return one-way throttle valve (2a), oil inlet list outside the rodless cavity of hydraulic cylinder
To throttle valve (2b), cut-off type electromagnetic direction valve (2c) composition, the P mouths of cut-off type electromagnetic direction valve pass through unidirectional with hydraulic oil source
Valve I (2d) connections, T mouthfuls are connected with hydraulic oil-returning pipe by check valve II (2e), and A mouthfuls are connected with oil inlet one-way throttle valve.
2. according to claim 1 automatically shut down hydraulic butterfly valve, it is characterised in that the hydraulic oil source and check valve I it
Between be provided with ball valve (2f).
3. according to claim 1 automatically shut down hydraulic butterfly valve, it is characterised in that the hydraulic cylinder is rod chamber band spring
(7) plunger case.
4. according to claim 1 or 2 automatically shut down hydraulic butterfly valve, it is characterised in that the hydraulic control system is cut
Only formula electromagnetic direction valve replaces with solenoid directional control valve (2c '), and check valve II replaces with high back pressure check valve (2e '), electromagnetic switch
The P mouths of valve are connected with hydraulic oil source by check valve I, and T mouthfuls are connected with hydraulic oil-returning pipe by high back pressure check valve, A mouthfuls with into
Oily one-way throttle valve connection, B mouthfuls of closings, the rod chamber of hydraulic cylinder are connected to the T mouths of solenoid directional control valve.
5. according to claim 4 automatically shut down hydraulic butterfly valve, it is characterised in that the mechanical component is long force arm type dual knot
Structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721430955.6U CN207349553U (en) | 2017-10-30 | 2017-10-30 | One kind automatically shuts down hydraulic butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721430955.6U CN207349553U (en) | 2017-10-30 | 2017-10-30 | One kind automatically shuts down hydraulic butterfly valve |
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| Publication Number | Publication Date |
|---|---|
| CN207349553U true CN207349553U (en) | 2018-05-11 |
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ID=62353076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721430955.6U Active CN207349553U (en) | 2017-10-30 | 2017-10-30 | One kind automatically shuts down hydraulic butterfly valve |
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| Country | Link |
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| CN (1) | CN207349553U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030222A (en) * | 2019-05-16 | 2019-07-19 | 中冶赛迪工程技术股份有限公司 | Its hydraulic system of a kind of differential hydraulic control loop of fluid control valve and application |
-
2017
- 2017-10-30 CN CN201721430955.6U patent/CN207349553U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030222A (en) * | 2019-05-16 | 2019-07-19 | 中冶赛迪工程技术股份有限公司 | Its hydraulic system of a kind of differential hydraulic control loop of fluid control valve and application |
| CN110030222B (en) * | 2019-05-16 | 2024-02-23 | 中冶赛迪工程技术股份有限公司 | Differential hydraulic control loop of hydraulic control gate valve and hydraulic system using same |
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