CN102168699A - Hydraulic interceptor valve - Google Patents
Hydraulic interceptor valve Download PDFInfo
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- CN102168699A CN102168699A CN201110106902XA CN201110106902A CN102168699A CN 102168699 A CN102168699 A CN 102168699A CN 201110106902X A CN201110106902X A CN 201110106902XA CN 201110106902 A CN201110106902 A CN 201110106902A CN 102168699 A CN102168699 A CN 102168699A
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Abstract
The invention discloses a hydraulic interceptor valve which comprises a pressure oil inlet, a pressure oil outlet, an oil return pipeline, an interceptor slide valve and a restoration control element, wherein the pressure oil outlet is connected with a pressure oil source, and is used for guiding the pressure oil into the interceptor slide valve; the pressure oil outlet is used for outputting the pressure oil which flows from the interceptor slide valve; the oil return pipeline is used for enabling the pressure oil which flows out of the interceptor slide valve to backflow to the pressure oil source; the interceptor slide valve is respectively connected with the pressure oil inlet, the pressure oil outlet, the oil return pipeline and the restoration control element, and is used for guiding the pressure oil which flows from the interceptor slide valve into the oil return pipeline when the pressure at the pressure oil outlet decreases instantly; the restoration control element is connected with the pressure oil inlet, and is used for controlling the pressure oil which flows from the interceptor slide valve to be guided into the pressure oil outlet when the pressure difference of the pressure oil inlet and the pressure oil outlet exceeds the normal range. Through the valve provided by the invention, oil liquid leakage of the high-pressure pipeline can be prevented.
Description
Technical field
The present invention relates to technical field of hydraulic, more particularly, relate to a kind of hydraulic pressure intercepter valve (IV).
Background technique
Existing hydraulic control system, operating temperature are that the basic antiwear hydraulic oil that all uses of the occasion of room temperature is as working medium.Generally speaking, (for example: hydraulic power unit) distance field final controlling element (for example: oil cylinder, oil hydraulic motor etc.) distance is far for oil sources, tens to up to a hundred meters distance is arranged usually, be interconnected by hydraulic pipe line between them, the pressure oil of high pressure is transported to each final controlling element place through hydraulic pipe line.
The huge oil outer pipeline of hydraulic system breaks after producing hydraulic exciting easily, thereby the fluid that of breaking is vaporific splash and causes fire easily to high temp objects, therefore, the hydraulic system that is in hot environment now generally all can select for use water glycol or phosphoric acid fat fire-resistant oil as working medium, this two media fireproof performance is better, but they have its intrinsic major defect again.
Water glycol itself is the difficult combustion of an a kind of hybrid type medium, is the mixture of water and ethylene glycol, its advantage be run into high temperature can catching fire.The high temperature scene of present smelter (as: steelshop etc.) and so on, hydraulic system is substantially all used this medium, but its shortcoming is the greasy property extreme difference, extremely serious for the hydraulic element that use in the system (as the mechanical parts of sliding pair types such as plunger pump, solenoid valve, Proportional valve) wearing and tearing, when serious, only there is one month the working life of an imported hydraulic oil pump of running continuously, the hydraulic element that can only more renew after breaking down, such behaviour in service have caused a large amount of cost wastes and the delay of producing.In addition, the chemical property of water glycol itself is also very unstable, because the water capacity in the medium easily runs into high temperature vaporization taking place evaporates, water glycol fireproof performance after the vaporization will be had a greatly reduced quality, need timely supplementing water, but on-the-spot working environment is very difficult again to the quantitative detection of fluid, can only be whole fluid of periodic replacement system, the spare part amount that such hydraulic system needs after putting into operation (comprises the hydraulic element of damage and is used to replace hydraulic oil) greatly that the purchase cost and the renewal cost of spare part also are high simultaneously.
Phosphoric acid fat fire-resistant oil is the very high working medium of another kind of burning-point, and its burning-point can reach about 600 ℃, and greasy property is relatively good, nowadays uses in the electrohydraulic steam turbine controlling system of each high-power station very extensive at home.But, because phosphoric acid fat itself is a kind of poisonous medium, can not degrades at occurring in nature, discarded fluid can cause great pollution to environment, with nuclear waste peer, simultaneously, phosphoric acid fat fire-resistant oil is in use also very harsh for fluid maintenance requirement at ordinary times, needs regeneration regularly to filter and could guarantee that its chemical characteristics is stable, the price of phosphoric acid fat unusual costliness again simultaneously, the phosphoric acid fat price of same volume almost is ten times of antiwear hydraulic oil.
Owing to antiwear hydraulic oil has that greasy property is good, when stable chemical performance, operation fluid need not safeguard, nontoxic, the feature of environmental protection good, plurality of advantages such as cheap is widely used in all kinds of hydraulic systems.But (as: the STEELMAKING PRODUCTION line of smelter in high-temperature work environment, occasions such as electrohydraulic steam turbine controlling system), on-the-spot ambient temperature is very high, and densely covered high temp objects or high-temperature vapour pipeline, antiwear hydraulic oil is low because of its burning-point, open flash point is about 240 ℃, in case run into the generation pipe breakage, the fluid of high pressure will be in rent generation splash, if vaporific high-voltage oil liquid splash endlessly (as: red steel of high temperature to high temp objects, high-temperature vapour pipeline etc.) just very easy on fire, fire accident will cause great economic loss, and this is the basic reason that antiwear hydraulic oil can't be used in hot environment now.
Through above-mentioned analysis, antiwear hydraulic oil is stable chemical performance in the Hydraulic Field, the best working medium of cost performance, if when under hot environment, using, as long as can avoid using the hydraulic system of this medium after the high pressure oil pipeline breaks, the problem of vaporific splash takes place in the fluid of high pressure, just antiwear hydraulic oil can be used in the hydraulic system of hot environment work, thereby forgo the on-the-spot defective of using water glycol or phosphoric acid fat fire-resistant oil, improve the Economy of existing hydraulic system greatly.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of hydraulic pressure intercepter valve (IV), to prevent the pressure duct oil liquid leakage.
The embodiment of the invention provides a kind of hydraulic pressure intercepter valve (IV), comprising: pressure oil import, pressure oil outlet, return line, blocking guiding valve and the control unit that resets; Wherein,
Described pressure oil import connects pressure oil-source, is used for pressure oil is imported described blocking guiding valve;
Described pressure oil outlet is used for the pressure oil output of will flow out from described blocking guiding valve;
Described return line, the pressure oil that is used for flowing out from described blocking guiding valve is back to pressure oil-source;
Described blocking guiding valve connects described pressure oil import, pressure oil outlet, return line and the control unit that resets respectively, is used for then will importing described return line from the pressure oil that described blocking guiding valve flows out when pressure moment of described pressure oil outlet reduces;
The described control unit that resets connects described pressure oil import, is used for when the pressure difference of described pressure oil import and pressure oil outlet is in normal range (NR), and control flows imports described pressure oil outlet through the pressure oil of described blocking guiding valve.
Preferably, described blocking guiding valve specifically comprises:
Be arranged at the valve port that resets of the oil-feed valve port of the described pressure oil import of connection of valve pocket, the fuel-displaced valve port that connects described pressure oil outlet, the return port that connects described return line, the described control unit that resets of connection from top to bottom, the spool that fits tightly and can move up and down with described valve pocket in described valve pocket inside; Seal the valve body of described valve pocket; Wherein, described spool comprises:
The first fixedly connected from top to bottom spool, second spool and the 3rd spool; The following table area of described the 3rd spool contact pressure oil is greater than the surface area of described first and second spool joint contact pressure oil and less than the surface area of described second and third spool joint contact pressure oil;
When pressure moment of described pressure oil outlet reduced, then described the 3rd valve core movement was to described valve pocket bottom, made the described oil-feed valve port of the described second spool shutoff, and described fuel-displaced valve port and return port are communicated with; When the described valve port that resets receives the pressure oil that the described control unit that resets imports, then described first valve core movement is to described valve pocket top, makes the described return port of described the 3rd spool shutoff, and described oil-feed valve port and described fuel-displaced valve port are communicated with.
Preferably, described first spool, second spool and the 3rd spool are integral structure.
Preferably, the described control unit that resets is a solenoid directional control valve.
Preferably, described solenoid valve is 6 latus rectum solenoid directional control valves.
Preferably, described spool is the alloyed steel material.
Preferably, described valve pocket is the alloyed steel material.
Preferably, the described control unit that resets is fixedly connected on described valve body top.
Preferably, the means of fixation of the described control unit that resets is that bolt connects.
Preferably, the described control unit that resets adopts telecontrol or two kinds of reset modes of local operation.
Compare with prior art, hydraulic pressure intercepter valve (IV) provided by the invention, be used for hydraulic control system, the blocking guiding valve that it comprises can be judged the working state of hydraulic system outlet pressure oil pipe line automatically, moment can be made response when the pipeline of outlet pressure oil pipe line breaks, the pressure oil of cut-out pressure oil sources conveying immediately, the pressure oil of outlet can be introduced not have again simultaneously and push back oil pipe line, make the fluid at burst pipe place not have source pressure, the high pressure oil splash that nebulizes also just can not occur, thereby avoid leaking splash to the high temp objects fire accident that takes place on fire owing to pipe breakage causes antiwear hydraulic oil; In addition, the present invention is also applicable to other hydraulic system, can be used for avoiding pressure duct to break after, a large amount of hydraulic fluid leaks take place and the economic loss and the production environment that cause are polluted.
Description of drawings
In order to be illustrated more clearly in the technological scheme of the embodiment of the invention, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The structural representation of a kind of hydraulic pressure intercepter valve (IV) that Fig. 1 provides for the embodiment of the invention;
The structural representation of the blocking guiding valve that Fig. 2 provides for the embodiment of the invention;
The structural representation of the blocking valve core of the spool valve that Fig. 3 provides for the embodiment of the invention;
Fig. 4 is in the structural representation of " blocking position spool state " for the blocking valve core of the spool valve that the embodiment of the invention provides;
The stressed schematic representation of spool that Fig. 5 provides for the embodiment of the invention;
Fig. 6 is in the structural representation of " working position spool state " for the blocking valve core of the spool valve that the embodiment of the invention provides.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technological scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiments.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment who is obtained under the creative work prerequisite.
The embodiment of the invention provides a kind of hydraulic pressure intercepter valve (IV), to prevent the pressure duct oil liquid leakage.As shown in Figure 1, this hydraulic pressure intercepter valve (IV) comprises: pressure oil import 10, pressure oil outlet 11, return line 12, blocking guiding valve 13 and the control unit 14 that resets; Wherein,
Described pressure oil import 10 connects pressure oil-source, is used for pressure oil is imported described blocking guiding valve 13;
Described pressure oil outlet 11 is used for the pressure oil output of flowing out from described blocking guiding valve 13;
Described return line 12, the pressure oil that is used for flowing out from described blocking guiding valve 13 is back to pressure oil-source;
Described blocking guiding valve 13, connect described pressure oil import 10, pressure oil outlet 11, return line 12 and the control unit 14 that resets respectively, be used for when described pressure oil exports 11 pressure moment reduction, then will import described return line 12 from the pressure oil that described blocking guiding valve 13 flows out;
The described control unit 14 that resets connects described pressure oil import 10, is used for when the pressure difference of described pressure oil import 10 and pressure oil outlet 11 is in normal range (NR), and control flows imports described pressure oil outlet 11 through the pressure oil of described blocking guiding valve 13.
As seen, the hydraulic pressure intercepter valve (IV) that the foregoing description provides, be applied to hydraulic control system, the blocking guiding valve that it comprises can be judged the working state of hydraulic system outlet pressure oil pipe line automatically, when pressure moment of outlet reduces, the pipeline that can determine the mouth pressure oil pipe line breaks, thereby moment can be made response, the pressure oil of cut-out pressure oil sources conveying immediately, the pressure oil of outlet can be introduced not have again simultaneously and push back oil pipe line, make the fluid at burst pipe place not have source pressure, the high pressure oil splash that nebulizes also just can not occur, thereby avoid leaking splash to the high temp objects fire accident that takes place on fire owing to pipe breakage causes antiwear hydraulic oil; In addition, the present invention is also applicable to other hydraulic system, can be used for avoiding pressure duct to break after, a large amount of hydraulic fluid leaks take place and the economic loss and the production environment that cause are polluted.
For the ease of the present invention is further understood, describe the present invention below in conjunction with the specific embodiment of the present invention.
During concrete enforcement, as shown in Figure 2, described blocking guiding valve 13 specifically comprises:
Be arranged at the valve port 134 that resets of the oil-feed valve port 131 of the described pressure oil import of connection of valve pocket 130, the fuel-displaced valve port 132 that connects described pressure oil outlet, the return port 133 that connects described return line, the described control unit that resets of connection from top to bottom, the spool 135 that fits tightly and can move up and down with described valve pocket 130 in described valve pocket 130 inside; Seal the valve body 136 of described valve pocket 130; Described valve body 136 is generally used for protecting its inner valve pocket 130 and spool 135;
Wherein, as shown in Figure 3, described spool 135 comprises:
Fixedly connected from top to bottom first spool 1350, second spool 1351 and the 3rd spool 1352; The following table area S2 of described the 3rd spool 1352 contact pressure oil is greater than the surface area S0 of described first and second spool (1350,1351) joint contact pressure oil and less than the surface area S1 of described second and third spool (1351,1352) joint contact pressure oil.
In the embodiment of the invention, described first spool, second spool and the 3rd spool are integral structure, and when moving up and down in valve pocket inside, first spool, second spool and the 3rd spool are that integrated type moves.
In addition, when specifically implementing, the described control unit that resets can be solenoid directional control valve.
When pressure moment of described pressure oil outlet reduces, then described the 3rd valve core movement is to described valve pocket bottom, make the described oil-feed valve port of the described second spool shutoff, described fuel-displaced valve port and return port are communicated with, be the pressure oil that the cut-out pressure oil sources is carried, the pressure oil of outlet can be introduced not have pushing back oil pipe line simultaneously again; When the described valve port that resets receives the pressure oil that the described control unit that resets imports, then described first valve core movement is to described valve pocket top, make the described return port of described the 3rd spool shutoff, described oil-feed valve port and described fuel-displaced valve port are communicated with, be the outlet pressure oil pipe line just often, guarantee the normal output of pressure oil.
Below in conjunction with diagram, be that solenoid directional control valve is an example with the control unit that resets, the control principle of hydraulic pressure intercepter valve (IV) in the embodiment of the invention is described in detail.
The embodiment of the invention adopts the hydraulic control principle of fluid inlet/outlet oil pressure sampling, and the pressure oil of system at first enters the import of blocking guiding valve, receives on-the-spot each final controlling element by the outlet of blocking guiding valve again.Utilize the blocking guiding valve into and out of the pressure reduction of hydraulic fluid port as basis for estimation, utilize the stressed unbalanced characteristics of blocking valve core of the spool valve simultaneously, because in case the external high pressure pipeline breaks, pressure in the export pipeline must significantly reduce moment, inlet outlet pressure differential moment of blocking guiding valve becomes big like this, and the spool of blocking guiding valve just can snap action, cut-out pressure oil immediately after spool moves, fluid in the oil pipe line of leakage failure will take place simultaneously together with oil return, moment is with the pressure drain charge of exterior line.
Hydraulic pressure intercepter valve (IV) in the embodiment of the invention is when using, its mounting point and pressure oil-source are (for example: pumping plant) at same position, the pressure oil of oil sources at first enters the blocking guiding valve, directly be connected into the pressure duct of system again through the export pipeline of blocking guiding valve, and the pipeline that breaks is normally at the outlet side of hydraulic pressure intercepter valve (IV), the i.e. pipeline that is connected with fuel-displaced valve port, when the pipeline that is connected with fuel-displaced valve port breaks owing to the external force reason, pressure in this section pipeline reduces moment significantly, and amplitude surpasses 80% usually.
As shown in Figure 4, when the hydraulic pressure intercepter valve (IV) begins to enable, solenoid directional control valve is in initial power failure state, and the pressure oil of pressure oil-source is entered by the oil-feed valve port (being valve port 4) on the blocking guiding valve, and pressure oil also has been imported into filler opening " P " chamber of solenoid directional control valve simultaneously.At this moment, the spool of blocking guiding valve is in valve pocket (not shown) bottom, make valve port 2 and valve port 3 connect, wherein, valve port 2 is return port, connects not have to push back oil pipe line 12, valve port 3 is fuel-displaced valve ports, connect the pressure oil export pipeline, the spool of blocking guiding valve makes the pressure oil of fuel-displaced valve port import return line the shutoff of oil-feed valve port.At this moment, the blocking valve core of the spool valve promptly is in " blocking position spool state ".The stressed schematic representation of spool as shown in Figure 5, the concrete size of first spool, second spool and the 3rd spool can obtain following configuration also as shown in Figure 5:
| Each surperficial lifting surface area of spool calculates |
| Annulus area S3=(π/4) * (25 2-20 2)＝176.71mm 2 |
| Annulus area S0=(π/4) * (30 2-20 2)＝392.69mm 2 |
| Annulus area S1=(π/4) * (30 2-15 2)＝530.14mm 2 |
| Annulus area S4=(π/4) * (20 2-15 2)＝137.44mm 2 |
| Circular area S2=(π/4) * (20 2)＝314.16mm 2 |
| The spool Force Calculation |
| Spool component F1=P* (S0-S3)=215.98*P |
| Spool component F2=P* (S1-S4)=392.7*P |
| The spool F=F2-F1=176.72*P that makes a concerted effort |
| Valve core reset power F3=P*S2=314.16*P |
Wherein, suppose that the pressure that oil supply pressure oil is produced is P, act on the power F1=215.98*P above the annulus area S0 of first and second spool joint contact pressure oil this moment, at this moment there is not oil pressure to act on the circular area S2 of annular area S1 of second and third spool joint contact pressure oil and the 3rd spool contact pressure oil, therefore, the position promptly " is interdicted " because the effect of pressure F1 can only be in the bottom of valve pocket in the position of spool.
When needs blocking guiding valve is in proper functioning, promptly utilize the blocking guiding valve to realize the pressure oil of flowing through is exported to pressure duct, at this moment, need electronic or manually carry out the solenoid directional control valve homing action on the spot, the principle of solenoid directional control valve homing action is: the pressure oil that will import the inner filler opening " P " of solenoid valve chamber is incorporated into and connects reset actuator port " B " chamber of valve port of blocking guiding valve, enter the valve port that resets of blocking guiding valve again, it is valve port 1, at this moment, it is stressed to analyze spool in conjunction with Fig. 5, can know, act on the power F3=314.16*P above the circular area S2, F3＞F1 moves to the valve pocket top on the spool of blocking guiding valve is quick, with return port (valve port 2) shutoff, with reference to shown in Figure 6, this moment, to interdict valve core of the spool valve be in " working position spool state ", and the pressure oil of oil sources is incorporated into fuel-displaced valve port (valve port 3) from oil-feed valve port (valve port 4), and then enter into high-voltage tube road such as on-the-spot execution architecture.
Need to prove that when solenoid directional control valve is carried out the commutation action, need usually turn around time to continue about 5 seconds, this is for the pipeline that allows outlet valve mouth (valve port 3) connect has adequate time to be full of pressure oil, sets up operating oil pressure.After 5 seconds, solenoid directional control valve recovers initial power failure state, promptly release the pressure oil in the valve port that resets (valve port 1), at this moment, valve core of the spool valve then can remain on the position at valve pocket top automatically, principle is as follows: when valve core of the spool valve moves to the valve pocket top, fuel-displaced valve port (valve port 3) oil pressure is set up simultaneously, analyze the blocking spool stressing conditions of this moment in conjunction with Fig. 5 again, act on the power F2=392.7*P above the annulus area S1 on the blocking spool this moment, the power F1=215.98*P on the blocking spool above the circular area S0, the direction of power F1 is opposite with F2, at this moment, F=F2-F1=176.72*P＞0 of making a concerted effort that the blocking spool is subjected to, the direction of making a concerted effort is upwards.For general hydraulic system, during proper functioning, oil pressure is constant, promptly interdict the oiling valve mouth pressure of guiding valve and the pressure of fuel-displaced valve port and equate that therefore, blocking the stressed of spool remains unchanged, the position that then very short guiding valve can remain on the valve pocket top is motionless, keep system's normal operating pressure, the pressure of fuel-displaced valve port had both just had fluctuation within a narrow range, also can the holding position of blocking guiding valve not made a big impact.
When if the external high pressure pipe breakage takes place, pressure in this section pipeline reduces moment significantly, amplitude can surpass 80%, at this moment, the blocking guiding valve can be judged the oil pressure state of fuel tap mouth automatically, still analyze the spool stressing conditions of this moment in conjunction with Fig. 5, because the pressure moment reduction of fuel-displaced valve port (valve port 3), the feasible also moment reduction of pressure that acts on the annulus area S1, cause pressure F2 moment significantly to be reduced, as long as the range of decrease of F2 moment surpasses 45%*P, then interdict F=F1-F2＞0 of making a concerted effort that spool is subjected to, spool is displaced downwardly to the valve pocket bottom in effect following moment of pressure F1, block the oil-feed valve port (valve port 4) of oil sources, simultaneously fuel-displaced valve port (valve port 3) and return port (valve port 2) are connected, valve core of the spool valve moves " blocking position ", cuts off the pressure oil-source in the pipeline that breaks, since there is not the pressure oil-source that continues in the pipeline that breaks, just do not have the fluid ejection, also just can not be on fire, played the effect of preventing fires and interdicting and stoping the pressure oil liquid splash.
The embodiment of the invention in the specific implementation, described solenoid valve can be 6 latus rectum solenoid directional control valves.The electromagnetic valve mode is simple, and stable performance possesses long-range and two kinds of reset operation modes on the spot, can specifically be provided with according to actual application environment.Solenoid directional control valve can be fixedly connected on described valve body top, for example: the top that can be installed in the blocking guiding valve by bolt.
In addition, the blocking guiding valve adopts the slide-valve structure design, the whole available machinings of part such as spool, valve pocket, valve body are finished, mechanical processing technique is simple, valve core of the spool valve and valve pocket adopt the high duty alloy steel, have very good hardness and wear resistance, the dimension precision requirement height of spool and valve pocket guarantees sealing effect.
The whole integrated form that adopts of blocking guiding valve manufactures and designs, to interdict guiding valve simultaneously and integrate with the solenoid valve that resets, inner return line processing makes overall structure compact more on the valve body of blocking guiding valve, saved space outerpace, reduced overall volume and valve piece design difficulty is installed.During application, only need the bottom of hydraulic pressure intercepter valve (IV) is installed on the supporting manifold block by bolt, just can finish the blocking control task that needs.The non-stop run continuously throughout the year of this hydraulic pressure intercepter valve (IV) simultaneously without any need for maintenance, is an energy-saving design.
This kind hydraulic pressure fire prevention intercepter valve (IV) also can be used to prevent the hydraulic fluid leak of exterior line, uses as anti-fluid leak valve, has expanded its application area.If on-the-spot pressure duct is too much, on-the-spot actuator is too much, and final controlling element is widely distributed and complicated simultaneously, but multilevel hierarchy is arranged intercepter valve (IV), reduces to greatest extent the loss that pipe breakage causes to occur.
The above only is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction.
Though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention.Any those of ordinary skill in the art, do not breaking away under the technical solution of the present invention scope situation, all can utilize the method and the technology contents of above-mentioned announcement that technical solution of the present invention is made many possible changes and modification, or be revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not break away from technical solution of the present invention, all still belongs in the scope of technical solution of the present invention protection any simple modification, equivalent variations and modification that above embodiment did according to technical spirit of the present invention.
To the above-mentioned explanation of the disclosed embodiments, make related domain professional and technical personnel can realize or use the present invention.Multiple modification to these embodiments will be conspicuous concerning those skilled in the art, and defined herein General Principle can realize under the situation of the spirit or scope that do not break away from the embodiment of the invention in other embodiments.Therefore, the embodiment of the invention will can not be restricted to these embodiments shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (10)
1. a hydraulic pressure intercepter valve (IV) is characterized in that, comprising: pressure oil import, pressure oil outlet, return line, blocking guiding valve and the control unit that resets; Wherein,
Described pressure oil import connects pressure oil-source, is used for pressure oil is imported described blocking guiding valve;
Described pressure oil outlet is used for the pressure oil output of will flow out from described blocking guiding valve;
Described return line, the pressure oil that is used for flowing out from described blocking guiding valve is back to pressure oil-source;
Described blocking guiding valve connects described pressure oil import, pressure oil outlet, return line and the control unit that resets respectively, is used for then will importing described return line from the pressure oil that described blocking guiding valve flows out when pressure moment of described pressure oil outlet reduces;
The described control unit that resets connects described pressure oil import, is used for when the pressure difference of described pressure oil import and pressure oil outlet is in normal range (NR), and control flows imports described pressure oil outlet through the pressure oil of described blocking guiding valve.
2. hydraulic pressure intercepter valve (IV) according to claim 1 is characterized in that, described blocking guiding valve specifically comprises:
Be arranged at the valve port that resets of the oil-feed valve port of the described pressure oil import of connection of valve pocket, the fuel-displaced valve port that connects described pressure oil outlet, the return port that connects described return line, the described control unit that resets of connection from top to bottom, the spool that fits tightly and can move up and down with described valve pocket in described valve pocket inside; Seal the valve body of described valve pocket; Wherein, described spool comprises:
The first fixedly connected from top to bottom spool, second spool and the 3rd spool; The following table area of described the 3rd spool contact pressure oil is greater than the surface area of described first and second spool joint contact pressure oil and less than the surface area of described second and third spool joint contact pressure oil;
When pressure moment of described pressure oil outlet reduced, then described the 3rd valve core movement was to described valve pocket bottom, made the described oil-feed valve port of the described second spool shutoff, and described fuel-displaced valve port and return port are communicated with; When the described valve port that resets receives the pressure oil that the described control unit that resets imports, then described first valve core movement is to described valve pocket top, makes the described return port of described the 3rd spool shutoff, and described oil-feed valve port and described fuel-displaced valve port are communicated with.
3. hydraulic pressure intercepter valve (IV) according to claim 2 is characterized in that, described first spool, second spool and the 3rd spool are integral structure.
4. hydraulic pressure intercepter valve (IV) according to claim 1 is characterized in that, the described control unit that resets is a solenoid directional control valve.
5. hydraulic pressure intercepter valve (IV) according to claim 4 is characterized in that, described solenoid valve is 6 latus rectum solenoid directional control valves.
6. hydraulic pressure intercepter valve (IV) according to claim 2 is characterized in that, described spool is the alloyed steel material.
7. hydraulic pressure intercepter valve (IV) according to claim 2 is characterized in that, described valve pocket is the alloyed steel material.
8. hydraulic pressure intercepter valve (IV) according to claim 2 is characterized in that, the described control unit that resets is fixedly connected on described valve body top.
9. hydraulic pressure intercepter valve (IV) according to claim 8 is characterized in that, the means of fixation of the described control unit that resets is that bolt connects.
10. hydraulic pressure intercepter valve (IV) according to claim 1 is characterized in that, the described control unit that resets adopts telecontrol or two kinds of reset modes of local operation.
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| CN 201110106902 CN102168699B (en) | 2011-04-27 | 2011-04-27 | Hydraulic interceptor valve |
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| CN 201110106902 CN102168699B (en) | 2011-04-27 | 2011-04-27 | Hydraulic interceptor valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110593965A (en) * | 2019-08-19 | 2019-12-20 | 北京博力威格智能传控设备有限公司 | Main valve shutoff valve group, control method thereof and steam turbine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1235248A (en) * | 1999-05-06 | 1999-11-17 | 厦门大学 | Explosive-proof electromagnetic valve |
| WO2001029430A1 (en) * | 1999-10-20 | 2001-04-26 | Hitachi Construction Machinery Co., Ltd. | Pipe breakage control valve device |
| CN101025128A (en) * | 2006-02-24 | 2007-08-29 | 同济大学 | Axial symmetric vector spray-pipe A9 action emergency resetting hydraulic system |
| CN101025127A (en) * | 2006-02-24 | 2007-08-29 | 同济大学 | Axial-symmetric vector spray-tube A9/A8 area ratio dislocation protection hydraulic system |
| CN201322016Y (en) * | 2008-12-26 | 2009-10-07 | 迪斯油压工业(昆山)有限公司 | Oil pipe explosion-proof device |
-
2011
- 2011-04-27 CN CN 201110106902 patent/CN102168699B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1235248A (en) * | 1999-05-06 | 1999-11-17 | 厦门大学 | Explosive-proof electromagnetic valve |
| WO2001029430A1 (en) * | 1999-10-20 | 2001-04-26 | Hitachi Construction Machinery Co., Ltd. | Pipe breakage control valve device |
| CN101025128A (en) * | 2006-02-24 | 2007-08-29 | 同济大学 | Axial symmetric vector spray-pipe A9 action emergency resetting hydraulic system |
| CN101025127A (en) * | 2006-02-24 | 2007-08-29 | 同济大学 | Axial-symmetric vector spray-tube A9/A8 area ratio dislocation protection hydraulic system |
| CN201322016Y (en) * | 2008-12-26 | 2009-10-07 | 迪斯油压工业(昆山)有限公司 | Oil pipe explosion-proof device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110593965A (en) * | 2019-08-19 | 2019-12-20 | 北京博力威格智能传控设备有限公司 | Main valve shutoff valve group, control method thereof and steam turbine |
| CN110593965B (en) * | 2019-08-19 | 2022-08-09 | 北京博力威格智能传控设备有限公司 | Main valve shutoff valve group, control method thereof and steam turbine |
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|---|---|
| CN102168699B (en) | 2013-08-07 |
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