CN103267157B - The automatic baffling device of a kind of fluid - Google Patents
The automatic baffling device of a kind of fluid Download PDFInfo
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- CN103267157B CN103267157B CN201310147650.4A CN201310147650A CN103267157B CN 103267157 B CN103267157 B CN 103267157B CN 201310147650 A CN201310147650 A CN 201310147650A CN 103267157 B CN103267157 B CN 103267157B
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Abstract
The invention provides the automatic baffling device of a kind of fluid, belong to fluid anti-leak field.It comprises solenoid valve, current generating apparatus, signal supervisory instrument, and described solenoid valve is in parallel with described current generating apparatus, and described signal supervisory instrument is electrically connected with described solenoid valve, described current generating apparatus respectively; When occurring to leak, described current generating apparatus fluid output, fluid input produce pressure difference, described current generating apparatus is by fluid output and pressure fluid inlet difference generation current, described signal supervisory instrument by judging that the current signal produced controls described electromagnetic valve work, thus stops leakage.The automatic baffling device of this fluid, when rear welding system does not work, can block leakage automatically.The automatic baffling device of this fluid can be widely used in municipal waterpipe, natural gas line, petroleum pipeline, oilhydraulic engineering pipeline etc., is specially adapted to the place of field, deserted mountain, unmanned or danger.
Description
Technical field
The present invention relates to fluid anti-leak field, particularly relate to the automatic baffling device of a kind of fluid.
Background technique
Leakage is the ubiquitous phenomenon of the failure of current engineering machinery, especially even more serious in engineering machinery hydraulic device.General leakage mainly causes leakage because generation pressure difference and each element when fluid flows in hydraulic element and pipeline exist gap etc.In addition, bad working environments condition also can produce certain impact to the sealing of engineering machinery.System is once leak, and system pressure will be caused to set up not, and hydraulic fluid leak also can cause environmental pollution, and impact is produced and even produced inestimable serious consequence.
The factor causing engineering machinery work system to occur to leak is the result of many-sided combined influence, with existing technology and material, the leakage fundamentally eliminating work system is wanted to be difficult to accomplish, only from each work system leakage factor that affects (as affected the factor of leakage hydraulic system: 1 design factor, 2 manufacture and assembling factor, damage of 3 oil contaminations and component etc.) set out, take rational measure to reduce the leakage of work system as far as possible.
Before prevention from excessive flow leakage stove conventional at present, valve is primarily of parts compositions such as current-limiting apparatus, copper ball valve, Sealing and driving components, and the parts wherein playing anti-leak effect are current-limiting apparatus.When sebific duct comes off, can be increased suddenly by the gas flow of valve, exceed the preset flow of current-limiting apparatus, now current-limiting apparatus can be closed automatically, blocks combustion gas, plays the effect preventing gas leakage.The preset flow of current-limiting apparatus sets different values, to ensure that user normally uses according to combustion gas makings difference.
Current-limiting apparatus structure is shown in Fig. 1, primarily of compositions such as valve rod 64, spring 63, front end protrusion 62, support 61, catch 65 and umbrella skeletons 66.Normal circulation status: when user normally uses combustion gas, the active force of combustion gas to umbrella skeleton 66 is less than spring 63 pre-pressing force, umbrella skeleton 66 is not subjected to displacement, the gap of combustion gas between current-limiting apparatus inner valve stem 64 termination umbrella skeleton 66 and support 61 is normal through, resistance <50Pa.The closedown of current-limiting apparatus: when the sebific duct be connected with valve comes off, increased instantaneously by the gas flow of valve, exceed the preset flow of current-limiting apparatus, the active force of combustion gas to umbrella skeleton 66 is made to be greater than spring 63 pre-pressing force, umbrella skeleton 66 is with ovable valve stem 64 to move forward, umbrella skeleton 66 and cavity termination inwall are closely adjacent to, block the passage of combustion gas, prevent the leakage of combustion gas.Unlatching after current-limiting apparatus closedown: after valve current-limiting apparatus is closed, reconnect the sebific duct come off, the rotary switch of throttle down, at this moment spheroid touches the front end protrusion 62 of umbrella skeleton 66, makes umbrella skeleton 66 depart from cavity, recovers opening state.
When after combustion gas, welding system does not work, because some component ageing of gas burning system or other reasons leak, and leakage rate is less than normal use amount, does not exceed the preset flow of current-limiting apparatus, this current-limiting apparatus is inoperative, thus does not reach the object of Leakage prevention.
Summary of the invention
The technical problem to be solved in the present invention is to provide the automatic baffling device of a kind of fluid, and the automatic baffling device of this fluid, when rear welding system does not work, can block leakage automatically.
In order to solve the problems of the technologies described above, the invention provides the automatic baffling device of a kind of fluid, comprise solenoid valve, current generating apparatus, signal supervisory instrument, described solenoid valve is in parallel with described current generating apparatus, and described signal supervisory instrument is electrically connected with described solenoid valve, described current generating apparatus respectively; When occurring to leak, fluid output, the fluid input of described current generating apparatus produce pressure difference, described current generating apparatus is by described fluid output and described pressure fluid inlet difference generation current, described signal supervisory instrument by judging that the current signal produced controls described electromagnetic valve work, thus stops leakage.The automatic baffling device of this fluid is when fluid system occurs to leak, utilize the pressure official post current generating apparatus generation current of fluid system inside, signal supervisory instrument detects this current signal and sends control signal, solenoid valve receives control signal and works, thus reaches the object stoping and leak.
As a further improvement on the present invention, described current generating apparatus comprises swing cylinder and generator, and the pto＝power take-off of described swing cylinder is connected with the rotating shaft of described generator, and described pto＝power take-off drives the rotating shaft of described generator to rotate, thus generation current.
As a further improvement on the present invention, described signal supervisory instrument comprises difference amplifier, A/D converter, micro control unit, relay, the analogue signal of reception is amplified by described difference amplifier, through described A/D converter, the analogue signal after amplification is converted into digital signal, finally judges this digital signal by described micro control unit and determine that whether connecting described relay makes described electromagnetic valve work.
As a further improvement on the present invention, described solenoid valve adopts bi-bit bi-pass normally closed solenoid valve.
As a further improvement on the present invention, described swing cylinder adopts gear rack swing cylinder, described gear rack swing cylinder comprise piston rod, tooth bar, with tooth bar meshed gears, pto＝power take-off, described gear is connected with described pto＝power take-off, described pto＝power take-off is connected with the rotating shaft of described generator, described tooth bar is fixed on described piston rod, described piston rod drives described rack linear to-and-fro motion, described tooth bar promotes described gear and rotates, and then drives the rotating shaft of described generator to rotate.
As a further improvement on the present invention, described swing cylinder adopts blade oscillating cylinder, described blade oscillating cylinder comprises blade, pto＝power take-off, described blade is fixedly connected with described pto＝power take-off, described blade drives described pto＝power take-off to rotate together, and then drives the rotating shaft of described generator to rotate.
As a further improvement on the present invention, described swing cylinder adopts spiral swing cylinder, described spiral swing cylinder comprises the piston of band internal screw tooth, the pto＝power take-off of band external spiral tooth, described piston sleeve is located on described pto＝power take-off, described internal screw tooth coordinates with described external spiral tooth, described piston linear to-and-fro motion, drives described pto＝power take-off to rotate, and then drives the rotating shaft of described generator to rotate.
As a further improvement on the present invention, that described difference amplifier adopts is AD620, and magnification factor is 10 times; Described A/D converter adopts successive approximation A/D converter ADC0809; Described micro control unit adopts single-chip microcomputer or DSP digital signal processor, and described single-chip microcomputer adopts 89C51 single-chip microcomputer as control chip; Described relay adopts magnetic latching relay.
As a further improvement on the present invention, described generator adopts DC generator.
As a further improvement on the present invention, the automatic baffling device of described fluid also comprises one-way valve, switch; After described solenoid valve is in parallel with described current generating apparatus, then be connected successively with described one-way valve, described switch; Described signal supervisory instrument is electrically connected with described solenoid valve, described current generating apparatus, described switch respectively; Described signal supervisory instrument sends control signal and makes described electromagnetic valve work, described signal supervisory instrument sends control signal and closes described switch simultaneously, according to flyback principle, the pressure of the described fluid output of described swing cylinder can be greater than the pressure of described fluid input, promotes described swing cylinder and resets.
Compared to prior art, the automatic baffling device of fluid of the present invention, when fluid system occurs to leak, utilizes the pto＝power take-off of the pressure official post swing cylinder of fluid system inside to rotate the axis of rotation of drive electrical generators, electrical power generators generation current; Difference amplifier receives this current signal, this current signal is amplified 10 times and sends A/D converter to, A/D converter converts the current signal receiving amplification to digital signal and transfers to micro control unit, finally exported control signal engage relay by micro control unit make electromagnetic valve work according to this digital signal, thus stop and leak; Micro control unit output control signal makes switch close simultaneously, and according to flyback principle, the pressure of described swing cylinder fluid output can be greater than the pressure of fluid input, promotes swing cylinder and resets.The automatic baffling device of this fluid, when rear welding system does not work, not only can block leakage automatically, and swing cylinder can also automatically reset.Therefore switch also can play the effect intercepting and leak, and is equivalent to solenoid valve, Switching Two insurance, can automatically barrier fluid leak.
Accompanying drawing explanation
Fig. 1 is the prior art current-limiting apparatus structural representation in the present invention;
Fig. 2 is structured flowchart of the present invention;
Fig. 3 is current generating apparatus structural representation in the present invention;
Fig. 4 is current generating apparatus first mode of execution assembling front view in the present invention;
Fig. 5 is the A--A sectional view of current generating apparatus in the present invention;
Fig. 6 is current generating apparatus second mode of execution assembly structure figure in the present invention;
Fig. 7 is current generating apparatus second mode of execution blade oscillating cylinder structure schematic diagram in the present invention;
Fig. 8 is current generating apparatus the 3rd mode of execution assembly structure figure in the present invention;
Fig. 9 is signal supervisory instrument workflow block diagram in the present invention.
In figure, each component names is as follows:
1--solenoid valve 32--fluid output
The mono-blade oscillating oil hydraulic cylinder of 2--one-way valve 40--
3--current device 401--bearing shell
4--switch 402--blade
7--signal supervisory instrument 403--bolt
10--swing cylinder 50--spiral oscillating motor
101--gear-and-rack swing hydraulic cylinder 501--flange
11--pto＝power take-off 502--thrust ring
12--tooth bar 503--spiral ring gear
13--gear 61--support
14--piston rod 62--front end protrusion
141--rod seal circle 63--spring
15--cylinder cap 64--valve rod
151--cylinder body seal circle 65--catch
152--fluid flow port 66--umbrella skeleton
16--cylinder body 71--difference amplifier
161--inner surface of cylinder block 72--A/D transducer
162--cylinder body ear 73--micro control unit
17--piston 74--circuit breaker
171--piston ring Simmer ring 75--power supply
18--outlet valve
19--damping device
191--buffering ring
192--cushions cavity
20--generator
201--DC generator
21--rotating shaft
30--shaft joint
31--fluid input
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
As shown in Figure 2, the automatic baffling device of fluid comprises solenoid valve 1, current generating apparatus 3, signal supervisory instrument 7, one-way valve 2, switch 4; Solenoid valve 1 is connected with one-way valve 2, switch 4 more successively with after current generating apparatus 3 parallel connection, and signal supervisory instrument 7 is electrically connected with solenoid valve 1, current generating apparatus 3, switch 4 respectively; When occurring to leak, current generating apparatus 3 fluid output 32 end, fluid input 31 end produce pressure difference, current generating apparatus 3 is by fluid output 32 end, fluid input 31 end pressure difference generation current, signal supervisory instrument 7 by judging that the current signal produced carrys out Controlling solenoid valve 1 and works, thus stops leakage.The automatic baffling device of this fluid, when rear welding system does not work, can block leakage automatically.
As shown in Figure 3, current generating apparatus 3 according to fluid output 32 end, fluid input 32 end pressure difference generation current.It comprises swing cylinder 10 and generator 20, and the pto＝power take-off 11 of swing cylinder 10 is fixedly connected with the rotating shaft 21 of generator 20.Swing cylinder 10 utilizes the pressure difference of fluid system inside, and rotate at the pto＝power take-off 11 of the effect lower swing cylinder 10 of pressure difference, the rotating shaft 21 of drive electrical generators 20 rotates, and the kinetic energy of fluid system inside is converted to mechanical energy, and generator 20 generates electricity generation current.Swing cylinder is divided into blade oscillating cylinder, spiral swing cylinder, gear rack swing cylinder etc.; Generator comprises DC generator, alternator etc.; And fluid is divided into liquid, gas etc.Specific embodiment take swing cylinder as gear-and-rack swing hydraulic cylinder below, and generator is DC generator, and fluid is liquid, is illustrated specifically in detail.But it is gas that the present embodiment is equally applicable to fluid, generator is DC generator, and swing cylinder is blade oscillating cylinder or spiral swing cylinder.
Fig. 4 to Fig. 5 shows the first mode of execution of the current generating apparatus in the present invention.It is gas that this mode of execution is equally applicable to fluid, and generator is alternator.As shown in Figure 5, current generating apparatus comprises gear-and-rack swing hydraulic cylinder 101 and DC generator 201, the pto＝power take-off 11 of gear-and-rack swing hydraulic cylinder 101 is connected by shaft joint 30 with the rotating shaft 21 of DC generator 201, also other modes can be adopted to be fixedly connected with, and such as screw is fixed, bearing pin is fixed, rivet is fixed.
As shown in Figure 4, gear-and-rack swing hydraulic cylinder 101 comprises cylinder body 16, cylinder cap 15, piston 17, piston rod 14, tooth bar 12, gear 13, pto＝power take-off 11, buffering ring 191.Piston rod 14 is main force-transmitting part of gear-and-rack swing hydraulic cylinder, must have enough intensity and rigidity, and piston rod 14 adopts solid construction.The shaft-like shape part of piston rod 14 cylinder, there is step at two ends, and be provided with without shoulder outside thread, stepped diameters is larger than major diameter of thread; Piston 17 is cylindrical, center is through hole, through hole is also provided with step outward, this step and piston rod 14 step are worked in coordination, center is provided with the internal thread coordinated with piston rod 14 outside thread, piston 17 is located at piston rod 14 two ends by internal and external screw thread engagement sleeves, and step place is also provided with rod seal circle 141, prevents seepage; Buffering ring 191 is ring, and inner ring is provided with the internal thread coordinated with piston rod 14 outside thread, and buffering ring 191 is arranged on outside piston 17, for being fixed piston 17; Also be provided with snap ring (not shown) outside buffering ring 191, for blocking buffering ring 191, prevent buffering ring 191 from retreating and loosening.
As shown in Figure 4, tooth bar 12 is positioned at piston rod 14 intermediate portion, between two-piston 17.Tooth bar and piston rod 14 can adopt integrative-structure, and piston rod 14 directly processes tooth bar 12; Also can adopt Split type structure, be fixedly connected with after tooth bar 12 processes with piston rod 14 again, the mode be fixedly connected with can adopt welding or screw to fix; Gap is left between tooth bar 12 and inner surface of cylinder block 161.The material of piston 17 can adopt wear resisting cast iron, and piston 17 and cylinder body seal adopt piston ring packing, and this piston ring packing is the three groups of piston ring Simmer rings 171 be arranged on piston.The entirety be made up of piston 17, piston rod 14, tooth bar 12, buffering ring 191, snap ring, rod seal circle 141, piston ring Simmer ring 171, straight reciprocating motion in cylinder body.
As shown in Figure 4, pto＝power take-off 11 is axial workpiece, is installed on cylinder body ear 162, and stretches out outside cylinder body 16; Gear 12 to be sheathed on pto＝power take-off 11 and to be fixedly connected with pto＝power take-off 11 by bearing pin.Gear 13 and tooth bar 12 engage each other, and piston 17 is with carry-over bar 12 straight reciprocating motion in cylinder body 16, and tooth bar 12 driven gear 13 rotates together with pto＝power take-off 11.As shown in Figure 3, pto＝power take-off 11 is fixedly connected with the rotating shaft 21 of DC generator 201 by shaft joint 30, and the rotating shaft 21 of pto＝power take-off 11 with dynamotor 201 rotates simultaneously, and DC generator 201 generates electricity and produces direct current.
As shown in Figure 4, the two ends of cylinder body 16 are connected with cylinder cap 15 respectively, form airtight pressure chamber.Cylinder body 16 is main bodys of oil hydraulic cylinder, and remaining parts is assembled on it, and its structural type has a significant impact processing and assembling, and therefore its structure must be convenient to assembling, dismounting and maintenance as far as possible.Cylinder body 16 is a lot of with the Connecting format of cylinder cap 15, and Flange joint uses the most general structural type in oil hydraulic cylinder, and cylinder body 16 end is provided with flange, itself and end cap 15 coupled together with bolt.Flanged connecting structure is simple, processes and installs and removes all very convenient.Inner surface of cylinder block 161 and cylinder cap 15 cooperation place are also provided with cylinder body seal circle 151, for preventing fluid seepage.
Gear-and-rack swing hydraulic cylinder 101 cylinder body 16 material selection 45 steel, and modified to hardness be 241 ~ 285HB.Cylinder body blank adopts forged steel.In order to prevent corrosion and improve the life-span, inner surface of cylinder block 161 chromium plating, thickness of coating is the layers of chrome of 30 ~ 40 microns, carries out honing or polishing after plating.
Hydraulic system can infiltrate air in installation process or after quitting work for a long time, also can entrained air in liquid, because gas has larger compressibility, will make to produce vibration in hydraulic cylinder works, tremble and creep, and be attended by the serial abnormality such as noise and heating.Therefore, when designing hydraulic cylinder structure, guarantee to get rid of the gas accumulated in cylinder in time.In order to hydraulic cylinder is stablized, on new clothes after oil hydraulic cylinder, the air in cylinder must be discharged.One of method of exhaust is that oil hydraulic cylinder moves repeatedly, until stable movement, but more reliable method arranges outlet valve on oil hydraulic cylinder, and outlet valve is generally placed on the end of oil hydraulic cylinder, and double-acting hydraulic cylinder then should arrange two outlet valves.As shown in Figure 2, be respectively provided with an outlet valve 18 at gear-and-rack swing hydraulic cylinder cylinder body two ends, for getting rid of the air be mixed in gear-and-rack swing hydraulic cylinder cylinder body.
In oil hydraulic cylinder, the working principle of damping device utilizes piston or cylinder body between piston and cylinder cap, to seal a part of fluid when it moves towards stroke terminal, force it from aperture or finedraw, extrude to produce very large resistance, workpiece is braked, and the movement velocity that slows down gradually reaches the object avoiding piston and cylinder cap mutually to clash into.As shown in Figure 2, the damping device 19 of this gear-and-rack swing hydraulic cylinder comprises buffering ring 191 and buffering cavity 192.Buffering ring 191 is ring, and inner ring is provided with the internal thread coordinated with piston rod 14 outside thread, and buffering ring 191 is arranged on outside piston 17, for being fixed piston 17; Buffering cavity 192 is the cylindrical cavities arranged on cylinder cap 15 end, and diameter is greater than the external diameter of buffering ring 191, and the degree of depth is greater than the thickness of buffering ring 191; When liquid enters from fluid mouth 152, move to the other end at the effect lower piston 17 of pressure difference, when piston 17 moves towards stroke terminal, buffering ring 191 has started to enter buffering cavity 192, a part of liquid is sealed between piston 17 and cylinder cap 15, this part is forced from buffering ring 191 and buffering cavity 192 finedraw, to be extruded to produce very large resistance by the liquid sealed, workpiece is braked, and slow down gradually movement velocity, avoids piston 17 and cylinder cap 15 mutually to clash into.
Fig. 6 to Fig. 7 shows the second mode of execution of current generating apparatus in the present invention.Present embodiment is with single-vane actuator, and fluid is liquid, and generator is that DC generator illustrates, but this kind of mode of execution is equally applicable to fluid is gas, and generator is alternator.As shown in Figure 6, current generating apparatus comprises single blade oscillating oil hydraulic cylinder 40 and DC generator 201, the pto＝power take-off 11 of single blade oscillating oil hydraulic cylinder 40 is connected by shaft joint 30 with the rotating shaft 21 of DC generator 201, also other modes can be adopted to be fixedly connected with, and such as screw is fixed, bearing pin is fixed, rivet is fixed.
As shown in Figure 6, Figure 7, single blade oscillating oil hydraulic cylinder 40 comprises cylinder body 16, cylinder cap 15, pto＝power take-off 11, fluid flow port 152, bearing shell 401, blade 402, bolt 403; Fluid flow port 152 is out import or the outlet of the liquid on cylinder cap 15; Cylinder body 16 two ends are installed between cylinder cap 15, two cylinder cap 15 and are interfixed by bolt 403, and cylinder body 16 is fixed between two cylinder caps 15, and cylinder body 16 and cylinder cap 15 contacting point are also provided with seal ring; Pto＝power take-off 11 is installed between two cylinder caps 15, and at least one end is stretched out outside cylinder cap 15, can relatively rotate between pto＝power take-off 11 with cylinder cap 15, is also provided with seal ring between pto＝power take-off 11 and cylinder cap 15; Bearing shell 401 is fixedly connected with cylinder body 16 or is fixedly connected with cylinder cap 15, and bearing shell 401 is flexibly connected with pto＝power take-off 11, and surface of contact place is provided with seal ring; Blade 402 is fixedly connected with into a single integrated structure with pto＝power take-off 11, rotates with pto＝power take-off 11, and blade 402 coordinates with cylinder body 16 internal surface gaps, and cooperation place is provided with seal ring, for seal fluid; During work, liquid enters from fluid mouth 152, and under the effect of hydraulic pressure, blade 402 drives pto＝power take-off 11 to rotate together, and the rotating shaft 21 of pto＝power take-off 11 drive electrical generators rotates, electrical power generators generation current.
The second mode of execution of current generating apparatus in the present invention is illustrated as with two sections of words above, what this kind of mode of execution adopted is single blade oscillating oil hydraulic cylinder, is equally applicable to double-leaf oscillating motor, structure and single blade oscillating oil hydraulic cylinder similar, the quantity of blade changes two panels into, and bearing shell changes two into.
Fig. 8 shows the third mode of execution of the current generating apparatus in the present invention.Present embodiment is with spiral swing cylinder, and fluid is liquid, and generator is that DC generator illustrates, but this kind of mode of execution is equally applicable to fluid is gas, and generator is alternator.As shown in Figure 8, current generating apparatus comprises spiral oscillating motor 50 and DC generator 201, the pto＝power take-off 11 of spiral oscillating motor 50 is connected by shaft joint 30 with the rotating shaft 21 of DC generator 201, also other modes can be adopted to be fixedly connected with, and such as screw is fixed, bearing pin is fixed, rivet is fixed.
As shown in Figure 8, spiral oscillating motor 50 comprises cylinder body 16, cylinder cap 15, pto＝power take-off 11, piston 17, fluid flow port 152, flange 501, thrust ring 502, spiral ring gear 503; Cylinder cap 15 is fixedly connected with cylinder body 16 by flange 501, is provided with seal ring between cylinder cap 15 and cylinder body 16; Pto＝power take-off 11 is cylindric, and centre is provided with step, and the diameter at step place is greater than two ends diameter, step place is also provided with external spiral tooth, pto＝power take-off 11 is installed in cylinder body 16, and at least one end is stretched out outside cylinder body 16, is provided with seal ring between pto＝power take-off 11 and cylinder cap 15; Piston 17 is sheathed on pto＝power take-off 11, internal screw tooth is provided with in piston 17, work in coordination with the external spiral tooth on pto＝power take-off 11, piston 17 cylindrical is provided with seal ring, piston 17 coordinates with the motive sealing of cylinder body 16 internal surface, piston 17 and pto＝power take-off 11 cooperation place are provided with seal ring, and piston 17 coordinates with pto＝power take-off 11 motive sealing; Also be provided with spiral ring gear 503 between piston 17 and cylinder body 16, spiral ring gear 503 is fixedly connected with cylinder body 16, and piston 17 and the to-and-fro motion of spiral ring gear 503 energy relative rectilinear, can not relatively rotate; Being provided with thrust ring 502 between flange 501 and cylinder cap 15, between cylinder cap 15 and spiral ring gear 503, loosening between flange 501, cylinder cap 15, spiral ring gear 503 for preventing; Fluid flow port 152 is out import or the outlet of the liquid on cylinder body 16; Liquid enters from fluid flow port 152, and under the effect of hydraulic pressure, piston 17 straight reciprocating motion in cylinder body 16, under the transmission of inside and outside helical tooth, pto＝power take-off 11 rotates, thus the rotating shaft 21 of drive electrical generators rotates, electrical power generators generation current.
Fig. 9 shows a kind of mode of execution of the signal supervisory instrument in the present invention.As shown in Figure 9, a kind of signal supervisory instrument it comprise difference amplifier 71, A/D converter 72, micro control unit 73, the analogue signal of reception is amplified by difference amplifier 71, then through A/D converter 72, analogue signal is converted into digital signal, finally judge digital signal by micro control unit 73 and determine whether export control signal, whether the control signal control relay 74 of output is opened.This signal supervisory instrument also comprises power supply 75, device body (not shown), required operating voltage when power supply 75 provides this signal supervisory instrument to work, and power supply 75 can use civil power produce through transformer transformation or use dryelement cell; Difference amplifier 71, A/D converter 72, micro control unit 73, relay 74, power supply 75 etc. are installed on (not shown) in device body.
As shown in Figure 9, micro control unit 73 adopts single-chip microcomputer or DSP digital signal processor, present embodiment is for 89C51 single-chip microcomputer, the critical piece of A/D converter 72 is ADC0890, difference amplifier 71AD620 magnification factor is 10 times, that relay 74 adopts is magnetic latching relay DS-2Y-S-DC5V, power supply 75 can be produced through transformer transformation by outside 220V civil power, and power supply 75 provides electric current and voltage needed for difference amplifier AD620, A/D converter ADC0890,89C51 single-chip microcomputer, magnetic latching relay respectively.In actual design, the analogue signal that this signal supervisory instrument detects is more weak, by the weak analogue signal that detects after difference amplifier AD620 amplifies 10 times, digital signal is converted to through A/D converter ADC0890, then the digital signal changed is sent 89C51 single-chip microcomputer by A/D converter ADC0890, finally judged whether to export control signal according to this digital signal by 89C51 single-chip microcomputer, control magnetic latching relay DS-2Y-S-DC5V and open or close.
Above in several mode of execution, solenoid valve 1 is preferably AB31-02-2 bi-bit bi-pass normally closed solenoid valve.This solenoid valve 1 can multipurpose use, high efficiency, and long lifetime distribution direction is flexible; Working medium: air, combustion gas, vacuum, water, wet goods; Manner of execution: direct acting type cut-off type; Pattern: Normally closed type; Use the maximum compression resistance 1.0Mpa of pressure 0 ~ 0.8Mpa; Operating voltage 220V.
As shown in Fig. 2, Fig. 3, Fig. 9, as the further improvement of the automatic baffling device of fluid of the present invention, the automatic baffling device of described fluid also comprises one-way valve 2, switch 4, after described solenoid valve 1 is in parallel with described current generating apparatus 3, then is connected successively with described one-way valve 2, switch 4; Described signal supervisory instrument 7 is electrically connected with described solenoid valve 1, described current generating apparatus 3, described switch 4 respectively.The automatic baffling device of fluid of the present invention is when fluid system occurs to leak, utilize the fluid input 31 of fluid system inside to rotate with the rotating shaft 21 that the pto＝power take-off 11 of fluid output 32 pressure official post swing cylinder 10 rotates drive electrical generators 20, generator 20 generates electricity generation current; Difference amplifier 71 receives this current signal, this current signal is amplified 10 times and sends A/D converter 72 to, A/D converter 72 converts the current signal receiving amplification to digital signal and transfers to micro control unit 73, finally exported control signal engage relay 74 by micro control unit 73 according to this digital signal solenoid valve 1 is worked, thus stop and leak; Simultaneously micro control unit 73 exports control signal switch 4 cuts out, and according to flyback principle, the pressure of described swing cylinder 10 fluid output 32 can be greater than the pressure of fluid input 31, promotes swing cylinder 10 and resets.The automatic baffling device of this fluid, when rear welding system does not work, not only can block leakage automatically, and swing cylinder 10 can also automatically reset.Therefore switch 4 also can play the effect intercepting and leak, and is equivalent to solenoid valve 1, switch 4 dual fail-safe, can automatically barrier fluid leak.The switch 4 by Control preferentially selected by switch 4.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (6)
1. the automatic baffling device of fluid, comprises solenoid valve, current generating apparatus, signal supervisory instrument, and described solenoid valve is in parallel with described current generating apparatus, and described signal supervisory instrument is electrically connected with described solenoid valve, described current generating apparatus respectively; When occurring to leak; fluid output, the fluid input of described current generating apparatus produce pressure difference; described current generating apparatus is by described fluid output and described pressure fluid inlet difference generation current; described signal supervisory instrument by judging that the current signal produced controls described electromagnetic valve work, thus stops leakage; It is characterized in that: described current generating apparatus comprises swing cylinder and generator, the pto＝power take-off of described swing cylinder is connected with the rotating shaft of described generator, and described pto＝power take-off drives the rotating shaft of described generator to rotate, thus generation current.
2. the automatic baffling device of fluid according to claim 1, it is characterized in that: described swing cylinder adopts gear rack swing cylinder, described gear rack swing cylinder comprise piston rod, tooth bar, with tooth bar meshed gears, pto＝power take-off, described gear is connected with described pto＝power take-off, described pto＝power take-off is connected with the rotating shaft of described generator, described tooth bar is fixed on described piston rod, described piston rod drives described rack linear to-and-fro motion, described tooth bar promotes described gear and rotates, and then drives the rotating shaft of described generator to rotate.
3. the automatic baffling device of fluid according to claim 1, it is characterized in that: described swing cylinder adopts blade oscillating cylinder, described blade oscillating cylinder comprises blade, pto＝power take-off, described blade is fixedly connected with described pto＝power take-off, described blade drives described pto＝power take-off to rotate together, and then drives the rotating shaft of described generator to rotate.
4. the automatic baffling device of fluid according to claim 1, it is characterized in that: described swing cylinder adopts spiral swing cylinder, described spiral swing cylinder comprises the piston of band internal screw tooth, the pto＝power take-off of band external spiral tooth, described piston sleeve is located on described pto＝power take-off, described internal screw tooth coordinates with described external spiral tooth, described piston linear to-and-fro motion, drives described pto＝power take-off to rotate, and then drives the rotating shaft of described generator to rotate.
5. the automatic baffling device of the fluid according to any one of Claims 1-4, is characterized in that: described generator adopts DC generator.
6. the automatic baffling device of the fluid according to any one of Claims 1-4, is characterized in that: the automatic baffling device of described fluid also comprises one-way valve, switch; After described solenoid valve is in parallel with described current generating apparatus, then be connected successively with described one-way valve, described switch; Described signal supervisory instrument is electrically connected with described solenoid valve, described current generating apparatus, described switch respectively; Described signal supervisory instrument sends control signal and makes described electromagnetic valve work, described signal supervisory instrument sends control signal and closes described switch simultaneously, according to flyback principle, the pressure of the described fluid output of described swing cylinder can be greater than the pressure of described fluid input, promotes described swing cylinder and resets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310147650.4A CN103267157B (en) | 2013-04-26 | 2013-04-26 | The automatic baffling device of a kind of fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310147650.4A CN103267157B (en) | 2013-04-26 | 2013-04-26 | The automatic baffling device of a kind of fluid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103267157A CN103267157A (en) | 2013-08-28 |
| CN103267157B true CN103267157B (en) | 2015-12-02 |
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| CN2497057Y (en) * | 2001-08-22 | 2002-06-26 | 青岛科玮电子有限公司 | Motorcycle petrol engine fuel-feeding and ignition control apparatus |
| CN1936430B (en) * | 2006-04-03 | 2010-05-12 | 美新半导体（无锡）有限公司 | Microleak automatic protection apparatus based on microflow detection |
| JP2008232871A (en) * | 2007-03-22 | 2008-10-02 | Hitachi Ltd | Circuit abnormality determining apparatus and circuit abnormality determining method |
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Effective date of registration: 20201223 Address after: 421681 Xingyuan Avenue, Guiyang Industrial Park, Qidong County, Hengyang City, Hunan Province Patentee after: Hunan Huitong new material Co.,Ltd. Address before: 201708 room 195, area n, 1st floor, building 1, 1288 Huateng Road, Huaxin Town, Qingpu District, Shanghai Patentee before: Shanghai soguo Technology Co.,Ltd. Effective date of registration: 20201223 Address after: 201708 room 195, area n, 1st floor, building 1, 1288 Huateng Road, Huaxin Town, Qingpu District, Shanghai Patentee after: Shanghai soguo Technology Co.,Ltd. Address before: 2 Taoyuan Road, Yuhu District, Xiangtan City, Hunan Province Patentee before: Hunan University of Science and Technology |