WO2009098956A1 - Dispositif de régulation de débit - Google Patents

Dispositif de régulation de débit Download PDF

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Publication number
WO2009098956A1
WO2009098956A1 PCT/JP2009/051158 JP2009051158W WO2009098956A1 WO 2009098956 A1 WO2009098956 A1 WO 2009098956A1 JP 2009051158 W JP2009051158 W JP 2009051158W WO 2009098956 A1 WO2009098956 A1 WO 2009098956A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure chamber
flow rate
control valve
bypass passage
opening
Prior art date
Application number
PCT/JP2009/051158
Other languages
English (en)
Japanese (ja)
Inventor
Junya Kuromusha
Original Assignee
Shimadzu Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shimadzu Corporation filed Critical Shimadzu Corporation
Priority to JP2009552434A priority Critical patent/JP5402645B2/ja
Publication of WO2009098956A1 publication Critical patent/WO2009098956A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/20—Excess-flow valves
    • F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
    • F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
    • F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
    • F16K17/30—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D7/00—Control of flow
    • G05D7/01—Control of flow without auxiliary power
    • G05D7/0126—Control of flow without auxiliary power the sensing element being a piston or plunger associated with one or more springs
    • G05D7/0133—Control of flow without auxiliary power the sensing element being a piston or plunger associated with one or more springs within the flow-path

Definitions

  • the present invention relates to a flow rate control device used for hydraulic devices such as various industrial machines and vehicles.
  • the flow rate control valve BB includes an inflow port a11 communicating with the high pressure chamber a51 of the housing a5 and a body a1 formed on the side wall with an outflow port a10 communicating with the low pressure chamber a52 of the housing a5.
  • a spool a3 slidably fitted in the body a1 and a spring a4 provided between the body a1 and the spool a3 and serving as a biasing means for elastically biasing the spool a3 in the axial direction.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2004-183818
  • the bypass passage a50 is provided between the flow control valve BB and the housing a5, and therefore, depending on the manner in which the flow control valve BB and the housing a5 are fitted.
  • the opening width of the bypass passage a50 is defined and the variation tends to increase.
  • the present invention is configured to solve such problems, that is, to facilitate adjustment for maintaining the pressure compensation function.
  • the flow control device is a flow control device that is provided in a housing having a high-pressure chamber and a low-pressure chamber therein and controls a flow rate from the high-pressure chamber to the low-pressure chamber, and is a flow that communicates with the high-pressure chamber.
  • Displacement spools, flow rate control valves provided between these bodies and spools and biasing means for biasing the spools in the axial direction and in the direction of increasing the opening of the inlet, the high pressure chamber,
  • the low-pressure chamber communicates outside the body of the flow control valve, and includes a bypass passage having an orifice whose opening degree can be changed.
  • a bypass passage having an orifice whose opening degree can be changed is provided at a different location from the inside of the body of the flow control valve, so that the pressure can be changed by changing the opening degree of the orifice. It is possible to easily adjust the amount of increase in the flow rate passing through the bypass passage accompanying the increase and the amount of decrease in the flow rate due to the spool moving in the direction of decreasing the opening of the inlet as the pressure increases. . Therefore, adjustment for maintaining the pressure compensation function can be easily performed.
  • the orifice is accessible from the outside of the housing, and the closing means for closing a part of the bypass passage, and the opening degree And an opening changing operation receiving means for receiving an operation for moving the closing means to change the position of the closing means. This is because an operation can be applied to the opening change operation accepting means from the outside of the casing.
  • a control valve insertion hole for communicating the high pressure chamber and the low pressure chamber is provided in the housing, and the flow rate control is performed.
  • a valve is disposed in the control valve insertion hole, and the bypass passage is provided on the outer edge side of the housing with respect to the control valve insertion hole. This is because the distance between the bypass passage and the outside of the housing is shortened.
  • the high pressure chamber and the low pressure chamber communicate with each other at a different location from the inside of the body of the flow control valve, and a bypass passage having an orifice whose degree of opening can be changed is provided in the housing. Therefore, by changing the opening degree of the orifice, the amount of increase in the flow rate passing through the bypass passage accompanying the rise in pressure and the spool moves in the direction of decreasing the opening degree of the inlet as the pressure rises. Adjustment which balances the flow volume reduction
  • the side sectional view showing the time of the initial state of the flow control device concerning one embodiment of the present invention.
  • the sectional side view which shows the time of the control state of the flow control apparatus concerning the embodiment.
  • Schematic which shows the flow-control apparatus which concerns on the other embodiment of this invention.
  • FIG.1 and FIG.2 The flow control apparatus of this embodiment is shown in FIG.1 and FIG.2.
  • This flow control device is incorporated in a casing 5 of a hydraulic apparatus having a high pressure chamber 51 and a low pressure chamber 52 therein, and has an inlet 11 communicating with the high pressure chamber 51 and an outlet communicating with the low pressure chamber 52.
  • a body 1 having a side wall 10 formed therein, a spool 3 that is slidably fitted in the body 1 and is displaced in a direction to reduce the opening of the inlet 11 as the pressure on the high pressure chamber 51 increases.
  • a spring 4 which is provided between the body 1 and the spool 3 and urges the spool 3 in the axial direction and in a direction to increase the opening of the inflow port 11 and the inside of the body 1 are closed.
  • the flow control valve B which includes the plug 2 as a main component and is disposed in the control valve insertion hole 5x of the housing 5, and the high pressure chamber 51 and the low pressure chamber 52 are disposed outside the body 1 of the flow control valve B. Communication, opening degree can be changed Comprises a bypass passage 53 having office 54.
  • the body 1 has a cylindrical shape in which one end is closed and the other end is opened, and the spool 3 is slidably held in the axial direction in the body 1.
  • the peripheral wall of the body 1 is provided with a plurality of inlets 11 that are intermittently arranged on substantially the same circumference, a plurality of outlets 10 that are also intermittently arranged on substantially the same circumference, and a downstream fluid pressure.
  • Reflux passages 17 and 18 are formed for introduction into the body 1 (the other end where the spring 4 is interposed).
  • the inflow port 11 exists near one end of the body 1, the outflow port 10 exists at a position slightly deviated from the inflow port 11 toward the other end, and the reflux paths 17 and 18 deviate further from the outflow port 10 toward the other end. It exists in the place.
  • a plug 2 is screwed to the other end of the body 1 to close it.
  • the spool 3 has an outer shape in which an annular recess 331 is formed between the one end portion 31 and the other end portion 32 to reduce the diameter of the intermediate portion 33.
  • the outer circumferences of the one end 31 and the other end 32 of the spool 3 are substantially in close contact with the inner circumference of the body 1.
  • a pressure transmission hole 311 that opens to one end surface side is provided inside the one end portion 31.
  • the pressure transmission hole 311 communicates with the annular recess 331 through the internal passage 332 of the intermediate portion 33.
  • a cylindrical hole 321 that opens to the other end surface side is provided inside the other end portion 32.
  • the spring 4 is inserted into the cylindrical hole 321, and one end thereof is elastically contacted with the bottom surface of the cylindrical hole 321 and the other end is in contact with the inward surface of the plug 2.
  • the spool 3 is elastically biased by the spring 4 toward one end, that is, in a direction in which the opening degree of the inlet 11 is increased.
  • the one end 31 of the spool 3 opens and closes the inlet 11, and the other end 32 opens and closes the outlet 10.
  • the fluid that flows in from the inflow port 11 reaches the outflow port 10 via the annular recess 331 and flows out from there.
  • the elastically biased spool 3 has its one end face in contact with the inward surface of the body 1 at the initial position shown in FIG. At the stage where the spool 3 is in the initial position, the inflow port 11 is fully open.
  • a part of the fluid flows from the high pressure chamber 51 into the low pressure chamber 52 not through the flow control valve B but via the bypass passage 53.
  • the bypass passage 53 is provided at a position different from the control valve insertion hole 5x.
  • an orifice 54 whose opening degree can be changed is provided in the middle.
  • the orifice 54 has a female screw hole 54x formed in the housing 5 and a closing means that can be screwed back and forth in the female screw hole 54x and that can change the closing amount of the bypass passage 53, that is, the opening degree as the orifice as the screw advances and retreats. It is formed using a male screw valve 541.
  • the base end portion of the male screw valve 541 is accessible from the outside of the housing 5, and an opening change operation reception for receiving an operation of screwing and retracting the male screw valve 541 using a driver to change the opening degree.
  • a driver receiving hole 541a as a means is provided.
  • a configuration in which the male screw valve 541 is advanced and retracted by using another jig such as a hexagon wrench instead of the driver may be adopted.
  • FIG. 3 is a graph showing changes in the flow rate flowing from the high pressure chamber 51 to the low pressure chamber 52 with respect to the fluid pressure in the high pressure chamber 51 when the bypass passage 53 is not provided and when the bypass passage 53 is provided.
  • a case where the bypass passage 53 is not provided is indicated by a broken line b
  • a case where the bypass passage 53 is provided is indicated by a solid line a.
  • the flow rate passing through the bypass passage 53 increases as the differential pressure between the pressure in the high pressure chamber 51 and the pressure in the low pressure chamber 52 increases, and compensates for the decrease in the flow rate passing through the flow control valve B described above.
  • the opening degree of the orifice 54 is adjusted, the decrease in the flow rate passing through the flow rate control valve B due to the movement of the spool 3 due to the fluid pressure is canceled out from the increase in the flow rate passing through the bypass passage 53 described above.
  • the amount of fluid flowing from the high pressure chamber 51 into the low pressure chamber 52 can be made substantially constant regardless of the differential pressure between the pressure in the high pressure chamber 51 and the pressure in the low pressure chamber 52.
  • the high pressure chamber 51 and the low pressure chamber 52 communicate with each other at a different location from the body 1 of the flow control valve B and the opening can be changed midway. Since the bypass passage 53 having 54 is provided, by changing the opening degree of the orifice 54, the flow rate passing through the bypass passage 53 accompanying the pressure increase, and the spool 3 is connected to the inlet as the pressure rises. Therefore, it is possible to easily adjust the flow rate reduction width by moving in the direction of decreasing the opening degree of 11. Therefore, adjustment for maintaining the pressure compensation function can be easily performed.
  • the orifice 54 is accessible from the outside of the housing 5 and the male screw valve 541 that closes a part of the bypass passage 53, and the male screw valve 541 is operated to advance and retract to change the opening degree.
  • a driver receiving hole 541a for receiving the pressure so that the adjustment for maintaining the pressure compensation function can be performed by a simple operation of inserting the tip of the driver into the driver receiving hole 541a and rotating the screw to move the male screw valve 541 back and forth. It can be carried out.
  • the casing 1 is provided with a control valve insertion hole 5x for communicating the high pressure chamber 51 and the low pressure chamber 52, and the flow rate control valve B is disposed in the control valve insertion hole 5x, and the bypass passage 53 is provided. Since it is provided at a position on the outer edge side of the housing 5 different from the control valve insertion hole 5x, by forming such a bypass passage 53 closer to the outer edge of the housing 5, a male screw valve 541 that forms the orifice 54 and The female screw hole to be engaged can be shortened, and the orifice 54 whose opening degree can be changed in the bypass passage 53 can be easily formed.
  • bypass passage may be provided anywhere in the housing as long as it communicates the high pressure chamber and the low pressure chamber.
  • a ball valve type as shown in FIG. 4 may be adopted. That is, a valve body A541 having a fluid passage A543 that can communicate with the bypass passage 53, and an operation unit A542 that accepts an operation for changing the posture of the valve body A541 to change the communication width between the fluid passage A543 and the bypass passage 53. You may employ
  • the other parts have the same configuration as the flow rate control device B according to the above-described embodiment, and therefore corresponding parts are denoted by the same reference numerals.
  • the orifice may be configured using a movable wall that forms a part of the outer wall of the bypass passage and is movable toward and away from the outer wall on the opposite side of the bypass passage. .
  • a part of the control valve insertion hole in the above-described embodiment is expanded to provide a bypass passage, and a closing means for closing a part of the bypass passage is provided in the bypass passage.
  • a closing means for example, a valve having the same configuration as the male screw valve in the above-described embodiment, a part of the outer wall of the bypass passage, and a direction in which it approaches and separates toward the outer wall on the opposite side of the bypass passage A movable wall or the like that can be moved is considered.
  • the high-pressure chamber and the low-pressure chamber communicate with each other at a location different from the inside of the body of the flow control valve, and a bypass passage having an orifice whose opening degree can be changed is provided in the housing. Therefore, by changing the opening degree of the orifice, the amount of increase in the flow rate passing through the bypass passage accompanying the rise in pressure and the spool moves in the direction of decreasing the opening degree of the inlet as the pressure rises. Adjustment which balances the flow volume reduction

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Safety Valves (AREA)
  • Flow Control (AREA)

Abstract

L'invention concerne un dispositif de régulation de débit muni d'une soupape B de régulation de débit, celle-ci comprenant un corps (1) dans une paroi latérale duquel sont pratiquées une ouverture (11) d'entrée reliée à une chambre (51) à haute pression et une ouverture (10) de sortie reliée à une chambre (52) à basse pression ; d'un tiroir (3) ajusté à l'intérieur du corps (1) de façon à coulisser et à être déplacé dans un sens tendant à diminuer le degré d'ouverture de l'ouverture (11) d'entrée à mesure que la pression s'élève du côté de la chambre (51) à haute pression ; un ressort (4) installé entre le corps (1) et le tiroir (3) et constituant un moyen d'actionnement qui agit sur le tiroir (3) dans la direction axiale et dans un sens tendant à augmenter le degré d'ouverture de l'ouverture (11) d'entrée ; et d'un conduit (53) de dérivation, doté d'un orifice (54) reliant la chambre (51) à haute pression et la chambre (52) à basse pression en dehors du corps (1) de la soupape B de régulation de débit, et dont le degré d'ouverture peut également être modifié.
PCT/JP2009/051158 2008-02-08 2009-01-26 Dispositif de régulation de débit WO2009098956A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009552434A JP5402645B2 (ja) 2008-02-08 2009-01-26 流量制御装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008029509 2008-02-08
JP2008-029509 2008-02-08

Publications (1)

Publication Number Publication Date
WO2009098956A1 true WO2009098956A1 (fr) 2009-08-13

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ID=40952034

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Application Number Title Priority Date Filing Date
PCT/JP2009/051158 WO2009098956A1 (fr) 2008-02-08 2009-01-26 Dispositif de régulation de débit

Country Status (2)

Country Link
JP (1) JP5402645B2 (fr)
WO (1) WO2009098956A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114373354A (zh) * 2021-12-30 2022-04-19 国能铁路装备有限责任公司 捣固车模拟装置及其仿真控制柜

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1741489A (en) * 1929-12-31 Oil-well plowing apparatus
JPS5376227U (fr) * 1976-11-29 1978-06-26
JP2004183818A (ja) * 2002-12-04 2004-07-02 Shimadzu Corp 流量制御弁
JP2007032752A (ja) * 2005-07-28 2007-02-08 Kagla Inbest Corp 定流量弁

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1741489A (en) * 1929-12-31 Oil-well plowing apparatus
JPS5376227U (fr) * 1976-11-29 1978-06-26
JP2004183818A (ja) * 2002-12-04 2004-07-02 Shimadzu Corp 流量制御弁
JP2007032752A (ja) * 2005-07-28 2007-02-08 Kagla Inbest Corp 定流量弁

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114373354A (zh) * 2021-12-30 2022-04-19 国能铁路装备有限责任公司 捣固车模拟装置及其仿真控制柜
CN114373354B (zh) * 2021-12-30 2024-03-01 国能铁路装备有限责任公司 捣固车模拟装置及其仿真控制柜

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JPWO2009098956A1 (ja) 2011-05-26
JP5402645B2 (ja) 2014-01-29

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