CN101988492A - Pressure regulating and controlling device of self-operated high-pressure water system and method thereof - Google Patents
Pressure regulating and controlling device of self-operated high-pressure water system and method thereof Download PDFInfo
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- CN101988492A CN101988492A CN2009100634256A CN200910063425A CN101988492A CN 101988492 A CN101988492 A CN 101988492A CN 2009100634256 A CN2009100634256 A CN 2009100634256A CN 200910063425 A CN200910063425 A CN 200910063425A CN 101988492 A CN101988492 A CN 101988492A
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Abstract
The invention relates to a pressure regulating and controlling device of a self-operated high-pressure water jet system and a method thereof. The device mainly comprises an adjustable reducing valve, a bypass hydraulic control throttling valve and a two-position three-way electromagnetic valve, wherein the reducing valve is used for reducing the pressure of the system and then used as a hydraulic control throttling valve for regulating and controlling a pressure source; the electromagnetic valve is used for controlling the pressure state of a hydraulic control end of the throttling valve so as to control whether system pressure is established or not, i.e. while starting up, the electromagnetic valve is in a power-off state, the hydraulic control end of the throttling valve is subjected to pressure relief, and the throttling valve is totally opened for the system to unload; when the electromagnetic valve is electrified, the hydraulic control end of the throttling valve is pressurized, the pressure from the reducing valve generates thrust through an area difference of the throttling valve element to ensure that the throttling valve element tends to be closed to form a throttling effect, thus the system pressure is boosted until the reaction thrust of the system pressure to the throttling valve element is balanced with the thrust of the hydraulic control end, and the system pressure is established; and the pressure of the reducing valve can be adjusted, i.e. the opening size of the throttling valve and the system pressure are adjusted. Because the thrust at two ends of the valve element are in a flexible balanced state, the phenomenon of soaring pressure of the high-pressure water jet system is guaranteed to be not generated.
Description
(1) technical field
The present invention relates to the pressure controlling devices and methods therefor of a kind of high pressure water (jet) system, is a kind of outlet pressure regulate and control method of high-pressure plunger water pump.
(2) technical background
High pressure water jet is a new technology that is developed rapidly in recent decades, and as cleaning, cutting, broken instrument, water-jet technology has its unique advantages.In recent years, along with developing rapidly that maximization, high pressure water jet intelligent, customizations are equipped, this technology has been penetrated into numerous applications: clean from cleaning to based on the industry of pipeline, tube bank, container of common mechanical part, building, removing glue from airfield runway eliminates rust to boats and ships, cut to the curved surface shape cutting from metal, nonmetal plate, from hydraulic coal mining to the exploitation rock, from spraying slip casting, from no cutter perform the operation water screen film, depositing dust, fountain to broken road surface ...
The quantitative plunger water pump of the many employings of high pressure water system, the technical problems such as non-loaded startup, spraying control and pressure adjustment that have pump, general all is to come control system pressure by the mode that a by-pass throttle valve is controlled the flow of bypass circulation, mainly contains following technological scheme the adjustment and the controlling of system of bypass throttle valve:
1, the manual off-load of manual adjustment: come the flow regulating valve aperture by adjusting screw rod, before startup, rotatable handle makes system's release with the stop valve standard-sized sheet, progressively turn the stop valve aperture when needing to spray after startup is finished again down, along with aperture reduces, pressure raises gradually, when not needing to spray, stop valve is opened again.This is the simplest mode, but because the jet latus rectum is generally less, the throttle valve stroke is less relatively, during adjustment entirely with feel, operate very inconvenient, the threshold state that outpaces easily during adjustment causes system pressure rise violently (because the safety valve response time lags behind, unusual suddenly rising of pressure caused the safety plug explosion, is commonly called as violent wind and presses); The locking problem that also has adjusting screw rod in addition, if do not lock after adjusting, during owing to high-pressure injection, the vibrations that pressure surge causes, screw position can change, and therefore the build-up of pressure shakiness, operates very inconvenient.Control problem for the problem and the injection that solve pressure stability, power scheme and auxiliary employing that generally have to take progressively to quicken are unloaded the streaming spray gun, adopt stepless speed regulation scheme, diesel engine using clutch linkage and throttle speed-regulating scheme as motor; In addition, adopt and unload the stream spray gun: setting is unloaded and is compressed switch on spray gun, in the time of need not spraying, water is released from bypass, has caused the water waste.Manual mode at present only on the relatively low high-pressure water pump of general pressure rank, join morely by homemade pump.
2, the pneumatic unloading valve of manual adjustment: press and control problem for solving the easy violent wind of manual voltage regulation, the external general pneumatic two-bit triplet unloading valve that adopts on extra high voltage system, thereby the action control system by electromagnetic gas valve control unloading valve is in off-load or loaded state, voltage regulating mode is still taked manual adjusting style, no longer at will adjusts after just adjusting.The pneumatic control scheme is controlled more convenient, but needs to increase air compressor and atmospheric control, and the system complex degree improves, and cost increases, and has problems such as noise during use, and has only offshore company's supply of material.Speak from theory, there is the possibility of spray nozzle clogging in the system that the ejecting system nozzle particularly adds abrasive material, because safety overflow valve is a spring structure, has response time problem, can't fundamentally avoid the violent wind of high-pressure water pump to press phenomenon.
(3) summary of the invention
In order fundamentally to solve the pressure controlling problem of high-pressure water shot streaming system, the inventor proposes a kind of self-powering type pressure controlling device and method, as shown in Figure 1, this regulating controller comprises reduction valve 1, hydraulic control throttle valve 3, two-bit triplet solenoid valve 2, pilot pressure table 4 and connecting tube etc., it is characterized in that: will regulate throttle valve at the screw rod on the bypass circulation of high-pressure water pump fluid end outlet and change the hydraulic control throttle valve into, connect a reduction valve at a bypass circulation of telling in addition from the outlet of high-pressure water pump fluid end, at reduction valve between the hydraulic control throttle valve, a two-bit triplet solenoid valve is installed, and the P mouth of solenoid valve connects the reduction valve outlet, T mouth water receiving case, the A mouth connects hydraulic control throttle valve control mouth, be communicated with the T mouth at off-position A mouth, be communicated with the P mouth at "on" position A mouth; Hydraulic control throttle valve (seeing accompanying drawing 2) has a two ends active area to have the spool of ratio difference, that is, the active area of hydraulic control end is greater than the active area of restriction.The area difference ratio at spool two ends should make throttling valve core all can reach the balance of two end thrusts in the certain regulation and control space of reduction valve.
Its regulate and control method is: reduction valve is regulated and control pressure source with system self pressure decompression back as the hydraulic control throttle valve; The pressure state of electromagnetic valve throttle valve hydraulic control end, thus control system pressure whether set up, that is, during start, solenoid valve is in off-position, the pressure release of throttle valve hydraulic control end, full trrottle, system unloaded; During the solenoid valve energising, throttle valve hydraulic control end pressurization produces thrust from the pressure of reduction valve by the throttling valve core area difference and makes the throttling valve core be tending towards closing the formation throttle effect, and system pressure raises, until its reaction thrust and hydraulic control end thrust balance, system's build-up pressure to throttling valve core; Adjust reduction valve pressure, promptly adjust the openings of sizes and the system pressure size of throttle valve.
Because the pressure of reduction valve, controlled the maximum closing pressure of throttle valve, can not produce screw type modulating valve Operational Figure Of Merit and cause system's moment superpressure (hurricane pressure) phenomenon, even beyond thought obstruction takes place in water pipe, spool is opened in system pressure rising meeting, restriction pressure further raises, and has thoroughly solved the plunger pump system hurricane and has pressed problem, has avoided because the situation of the too late explosion plug of safety valve response takes place.Solenoid valve is contained on the post-decompression control loop, and pressure is relatively low, and the control unit cost is lower.
This device has following beneficial effect:
1, thorough solution high pressure water jet system violent wind is pressed problem;
2, the pressure adjustment is simple, and soft readjustment can prolong throttle valve working life;
3, easy and safe to operate, save water and energy;
4, simple and reliable for structure, cost is lower.
(4) description of drawings
Fig. 1 is the high pressure water system figure of this regulating controller of employing, among the figure:
1.---high-pressure water pump
2.---filter
3.---water tank
4.---safety valve, initialization system safety pressure
5.---the system pressure table
6.---spray the electric operation switch, or claim the pumping switch, link with the spray gun valve
7.---spray gun valve (can join and can be unworthy of)
8.---the pressure controlling system contains
1---reduction valve, adjust jet pressure
2---the two-bit triplet solenoid valve, whether control injection, controlled by injection cock.
3---the hydraulic control throttle valve
4---the pilot pressure table
P0---system pressure interface
A---control interface
T---backflow interface, the water receiving case
Fig. 2 is a hydraulic control throttle valve structural representation, among the figure,
1---valve body
2---spool
3---auxiliary return spring
(5) embodiment
The embodiment of this regulating controller is mainly reflected in the pressure setting and hydraulic control throttle valve spool two ends area ratio coupling of reduction valve, carries out matching Design according to following principle:
1, reduction valve pressure maximum (upper limit) should be less than high pressure water system minimal design working pressure, otherwise reduction valve is adjusted inoperative when the unskilled labourer does pressure span work;
2, the ratio of the hydraulic control end of throttling valve core and throttling end area should be more than or equal to the ratio of system's maximum design pressure with the reduction valve pressure maximum, otherwise system's pressure maximum can't reach.
Claims (2)
1. self-powering type high pressure water system pressure controlling devices and methods therefor, regulating controller comprises reduction valve (1), two-bit triplet solenoid valve (2), hydraulic control throttle valve (3), pilot pressure table (4) and connecting tube etc., it is characterized in that: the screw rod on the bypass circulation of original high-pressure water pump fluid end outlet is regulated throttle valve change hydraulic control adjusting throttle valve into, connect a reduction valve at a bypass circulation of telling in addition from the outlet of high-pressure water pump fluid end, at reduction valve between the hydraulic control throttle valve, a two-bit triplet solenoid valve is installed, and the P mouth of solenoid valve connects the reduction valve outlet, T mouth water receiving case, the A mouth connects hydraulic control throttle valve control mouth, be communicated with the T mouth at off-position A mouth, be communicated with the P mouth at "on" position A mouth; Its regulate and control method is: reduction valve is regulated and control pressure source with system self pressure decompression back as the hydraulic control throttle valve; The pressure state of electromagnetic valve throttle valve hydraulic control end, thus control system pressure whether set up, that is, during start, solenoid valve is in off-position, the pressure release of throttle valve hydraulic control end, full trrottle, system unloaded; During the solenoid valve energising, throttle valve hydraulic control end pressurization produces thrust from the pressure of reduction valve by the throttling valve core area difference and makes the throttling valve core be tending towards closing the formation throttle effect, and system pressure raises, until its reaction thrust and hydraulic control end thrust balance, system's build-up pressure to throttling valve core; Adjust reduction valve pressure, promptly adjust the openings of sizes and the system pressure size of throttle valve.
2. the hydraulic control throttle valve of self-powering type high pressure water system pressure controlling device according to claim 1 is a technological points of the present invention, it is characterized in that: a unequal spool of two ends active area is arranged, that is, the active area of hydraulic control end is greater than the active area of restriction end.
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CN2009100634256A CN101988492A (en) | 2009-08-04 | 2009-08-04 | Pressure regulating and controlling device of self-operated high-pressure water system and method thereof |
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CN2009100634256A CN101988492A (en) | 2009-08-04 | 2009-08-04 | Pressure regulating and controlling device of self-operated high-pressure water system and method thereof |
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102373689A (en) * | 2011-07-29 | 2012-03-14 | 中联重科股份有限公司 | High-pressure waterway control system |
CN102513358A (en) * | 2011-12-23 | 2012-06-27 | 太原重工股份有限公司 | Hydraulic control system of drum locking cylinder of hot rolled seamless steel tube perforator |
CN103727088A (en) * | 2014-01-03 | 2014-04-16 | 柳州柳工液压件有限公司 | Flow control device and hydraulic system with the same |
CN106621146A (en) * | 2017-03-02 | 2017-05-10 | 中国人民武装警察部队学院 | Multifunctional fine water mist type fire extinguishing experiment device |
CN109342243A (en) * | 2018-11-19 | 2019-02-15 | 江苏科技大学 | Box-type load-holding etching test device |
CN110608210A (en) * | 2019-08-30 | 2019-12-24 | 武汉船用机械有限责任公司 | Hydraulic control system |
CN110801961A (en) * | 2019-12-11 | 2020-02-18 | 天津海之星水下机器人有限公司 | Spray gun system capable of meeting pressure control requirements by utilizing three-way electromagnetic valve |
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CN1168716A (en) * | 1994-12-09 | 1997-12-24 | 株式会社小松制作所 | Control device for a variable displacement hydraulic pump |
CN2520443Y (en) * | 2002-01-09 | 2002-11-13 | 湖南省中潭科技企业有限公司 | Guide control, pressure compensation safety protection self-operating pressure reducing valve for feedback system |
EP0966605B1 (en) * | 1997-10-22 | 2003-02-05 | Robert Bosch Gmbh | Fuel injection device for internal combustion engines |
CN2844598Y (en) * | 2005-09-20 | 2006-12-06 | 上海日泰阀门制造有限公司 | Direct-operated regulator |
WO2008125267A1 (en) * | 2007-04-11 | 2008-10-23 | Alfred Kärcher Gmbh & Co.Kg | High-pressure cleaning device |
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2009
- 2009-08-04 CN CN2009100634256A patent/CN101988492A/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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CN1168716A (en) * | 1994-12-09 | 1997-12-24 | 株式会社小松制作所 | Control device for a variable displacement hydraulic pump |
JP3707742B2 (en) * | 1994-12-09 | 2005-10-19 | 株式会社小松製作所 | Control device for variable displacement hydraulic pump |
EP0966605B1 (en) * | 1997-10-22 | 2003-02-05 | Robert Bosch Gmbh | Fuel injection device for internal combustion engines |
CN2520443Y (en) * | 2002-01-09 | 2002-11-13 | 湖南省中潭科技企业有限公司 | Guide control, pressure compensation safety protection self-operating pressure reducing valve for feedback system |
CN2844598Y (en) * | 2005-09-20 | 2006-12-06 | 上海日泰阀门制造有限公司 | Direct-operated regulator |
WO2008125267A1 (en) * | 2007-04-11 | 2008-10-23 | Alfred Kärcher Gmbh & Co.Kg | High-pressure cleaning device |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102373689A (en) * | 2011-07-29 | 2012-03-14 | 中联重科股份有限公司 | High-pressure waterway control system |
CN102513358A (en) * | 2011-12-23 | 2012-06-27 | 太原重工股份有限公司 | Hydraulic control system of drum locking cylinder of hot rolled seamless steel tube perforator |
CN102513358B (en) * | 2011-12-23 | 2014-03-19 | 太原重工股份有限公司 | Hydraulic control system of drum locking cylinder of hot rolled seamless steel tube perforator |
CN103727088A (en) * | 2014-01-03 | 2014-04-16 | 柳州柳工液压件有限公司 | Flow control device and hydraulic system with the same |
CN103727088B (en) * | 2014-01-03 | 2016-03-16 | 柳州柳工液压件有限公司 | Flow control device and there is the hydraulic system of this device |
CN106621146A (en) * | 2017-03-02 | 2017-05-10 | 中国人民武装警察部队学院 | Multifunctional fine water mist type fire extinguishing experiment device |
CN109342243A (en) * | 2018-11-19 | 2019-02-15 | 江苏科技大学 | Box-type load-holding etching test device |
CN109342243B (en) * | 2018-11-19 | 2022-05-13 | 江苏科技大学 | Box-type load-holding etching test device |
CN110608210A (en) * | 2019-08-30 | 2019-12-24 | 武汉船用机械有限责任公司 | Hydraulic control system |
CN110801961A (en) * | 2019-12-11 | 2020-02-18 | 天津海之星水下机器人有限公司 | Spray gun system capable of meeting pressure control requirements by utilizing three-way electromagnetic valve |
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Application publication date: 20110323 |