US3807450A - Hydraulic valve system and method - Google Patents

Hydraulic valve system and method Download PDF

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Publication number
US3807450A
US3807450A US00315446A US31544672A US3807450A US 3807450 A US3807450 A US 3807450A US 00315446 A US00315446 A US 00315446A US 31544672 A US31544672 A US 31544672A US 3807450 A US3807450 A US 3807450A
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US
United States
Prior art keywords
hydraulic
valve
valves
accumulator
control valve
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
US00315446A
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English (en)
Inventor
R Wailes
S Ottenstein
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
M&J Valve Co
Original Assignee
M&J Valve Co
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 M&J Valve Co filed Critical M&J Valve Co
Priority to US00315446A priority Critical patent/US3807450A/en
Priority to CA187,499A priority patent/CA990177A/en
Priority to GB5683373A priority patent/GB1418226A/en
Priority to JP48140252A priority patent/JPS5225570B2/ja
Priority to IT7332255Q priority patent/IT1002340B/it
Application granted granted Critical
Publication of US3807450A publication Critical patent/US3807450A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
    • F16K31/124—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston servo actuated
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/877—With flow control means for branched passages
    • Y10T137/87708—With common valve operator
    • Y10T137/87764—Having fluid actuator
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/877—With flow control means for branched passages
    • Y10T137/87708—With common valve operator
    • Y10T137/87772—With electrical actuation

Definitions

  • ABSTRACT A hydraulic valve operating system having a plurality of main flow control valves, each provided with a hydraulic power operator, together with means including control valves (e.g., four-way valves) connected to receive liquid from a common pressure accumulator. Selective operation of the control valves is effected by electrical means including circuitry having a common conductor through whichcurrent flows when the operation of any one of the control valves is initiated.
  • An isolation valve is interposed in the hydraulic connection to the hydraulic means.
  • An electrical sensing means is provided and is connected with the isolation valve so that when the electrical circuitry is selectively operated for the purpose of operating any one of the control valves, the isolation valve is operated whereby liquid under pressure is supplied for the required operation. Thus during standby periods no loss of liquid from the accumulator occurs by way of leakage of the control valves.
  • Another object of the invention is to provide a system and method which makes use of reliable means for indicating when a command is being applied for effecting operation of a valve, and for substantially instantly conmeeting the accumulator to the manifold of the hydraulic means associated with all of the valves, for carrying out a cycle of operation.
  • Another object is to provide reliable and sensitive detecting means associated with the electrical circuitry of the system, and which is employed to effect hydraulic communication between the accumulator and the hydraulic means associated with all of the valves.
  • the present invention makes use of a plurality of main flow control valves each of which is provided with a hydraulic'operator adapted to be energized to carry out valve opening and closing operations.
  • a hydraulic accumulator is used as the source of hydraulic liquid under pressure.
  • a control valve as for example one of the four-way type, is associated with the operator of each of the main valves, and is adapted to be set into operating positions to effect valve opening and closing operations.
  • Fluid connections are pro- 2 vided between each control valve and a common hydraulic manifold line.
  • Solenoid means are provided which are adapted to be electrically energized, and which are associated with the control valves in such a manner as to effect their conditioning for application of hydraulic liquid under pressure to the valve operators.
  • Electrical circuitry connects with the solenoid means, and the circuitry includes control switches adapted to be selectively operated for selectively energizing any one of the solenoid means whereby a particularmain valve is opened or closed.
  • the circuitry includes one common conductor which is connected to one side of a means provided for forming a fluid connection between the hydraulic accumulator and the common manifold, and interposed in this connection there is a normally closed isolation valve. Means is provided which serves to open this isolation valve immediately in response to operation of any one of the control switches.
  • FIG. 1 is a schematic diagram illustrating a hydraulic system incorporating the present invention.
  • FIG. 2- is a circuit diagram illustrating the electronic means employed in FIG. 1 for detecting the closing of any one of the control switches.
  • the system shown in FIG. 1 consists of a plurality of main valves A, B and C, which in this instance are of the gate type and which are adapted to be power operated.
  • Each of the power operators 10 for these valves may be a double-acting cylinder-piston assembly having the piston oroperating rod directly connected to the gate of the valve.
  • hydraulic liquid under pressure is supplied to one end of the cylinder and liquid is exhausted from the other end.
  • the' valves may be of the rotary ball type, in which event the operator may be of the rotary vane type and operated in substantially the same manner.
  • a single source of hydraulic liquid under pressure is provided for the operation of all of the valves.
  • the means employed,'indicated generally at 11, includes a hydraulic accumulator 12 which is connected to the discharge side of the pump 13, through valve 14.
  • This pump has its suction side connected to the liquid reservoir 16, and is controlled in such a manner as to maintain a desired pressure within the accumulator.
  • the pump is shown driven by an electric motor 17, which in turn is energized by the electrical circuit 18.
  • the circuit includes the pressure switch 19, having a pressure connection to the accumulator 12. When the accumulator pressure falls below a predetermined level, the switch 19 is closed to energize the motor 17, thus returning the pressure to the desired value.
  • the accumulator 12 may consist of a pressure vessel having its interior divided into two chambers by a flexible diaphragm. One chamber is sealed and contains gas while liquid is introduced and withdrawn from the other chamber. As the quantity of liquid increases the gas pressure increases until the desired pressure level is attained.
  • the capacity required for the accumulator 12 depends upon the requirements of the system. Assuming that only one of the main valves is to be operated at a time, then the accumulator should have sufi'tcient capacity to effect a cycle of operations of one valve without serious drop in hydraulic pressure. In instances where two or more valves may be operated simultaneously, the capacity of the accumulator must be increased accordingly.
  • the pump 13 is operated automatically as occasion requires, to maintain the desired pressure level in the accumulator.
  • Valve controlled line 20 may be provided for bypassing liquid to the reservoir 16.
  • Each of the four-way control valves 24 is shown having connections with a hydraulic manifold pressure line 26, and a hydraulic exhaust line 27.
  • the pressure line 26 is shown connected by line 28 with the accumulator 12.
  • the exhaust line 27 is shown connected to return exhaust liquid to the reservoir 16.
  • the arrangement is such that for one operating position of the operating member of each four-way control valve 23, liquid under pressure is supplied through line 21 to operator l and exhausted through line 22, thereby closing the associated main valve. Conversely, when the control valve 23 is placed in its other operating position, liquid under pressure is supplied through line 22 and exhausted through line 21, to open the main valve.
  • each device 26 indicated as connected to the operating member of the associated control valve 23 is a pneumatic motive device of the cylinder-piston type.
  • Application of pneumatic pressure, indicated as being supplied through line 27, is shown being controlled by the solenoid valves 29 and 30.
  • These valves are connected to electrical circuitry whereby they are selectively operated. Normally these valves are closed, but when electrically energized, pneumatic pressure is applied to one end or the other of the cylinder of device 26.
  • connection to the device 26 When de-energized the connection to the device 26 is vented to the atmosphere as indicated. It will be evident that when one solenoid is energized, the associated control valve 23 is conditioned to cause hydraulic pressure to be supplied to the operator for one cycle of operation, as for example to open the valve. When the other solenoid is energized the cycle of operation serves to close the valve.
  • the check valve assembly 24 may be located near the hydraulic operator 10.
  • the four-way control valves 23, the motive devices 26, and the solenoid valves 29 and 30, may be located at a remote operating station.
  • the electrical circuitry connected to the solenoid valves 28 and 29 includes a source of current represented by the current supply lines L1 and L2. It also includes the selectively operable switches 51A, 82A, SIB, S2B, SlC and S2C. When these switches are closed, the solenoid valve 29 or 30 of the corresponding main valve is energized. In other words, the selective operation of the switches serves to initiate a desired cycle of operation of each one of the main valves A, B or C.
  • the circuitry also includes a so-called trigger circuit 31, which connects to the common conductor 32 of the circuitry. This conductor connects to one side of all of the solenoid operated valves.
  • the trigger circuit 31 is shown having connections across the lines L1 and L2, and is also shown connected by circuit 33 with the relay switch 34.
  • the contacts of the relay switch 34 control circuit 36 which serves to energize the winding of the solenoid isolation valve 37.
  • the source of energizing current for circuit 36 may likewise be the lines L1 and L2.
  • valve 37 is normally biased toward closed position. It is inserted into the line 28 leading to the accumulator 12. It may be bypassed by valve 38 to permit manual or emergency operation.
  • the trigger circuit 31 In general the purpose of the trigger circuit 31 is to detect current flow in line 32, which indicates that one of the selectively operated switches is being operated to effect a cycle of operation of one of the valves.
  • the trigger circuit detects current flow in the return line 32, it causes current to be applied to the relay switch 34, thus energizing the winding of solenoid valve 37 to open the same and thereby causing hydraulic pressure to be applied to the manifold line 26 of the hydraulic system.
  • the control switch Immediately after completing a cycle of operation, the control switch is opened. whereby current flow in line 32 is discontinued. Under such conditions the trigger circuit de-energizes the relay switch 34, thus de-energizing the winding of the solenoid valve 37. Closure of this valve, and the maintenance of this valve in closed condition under standby conditions prevents any possible leakage of hydraulic liquid through the line 28 into the pressure line 26 of the system.
  • FIG. 2 illustrates a desirable type of trigger circuit. It consists of diode 1 connected between the conductor 32 and line L2, and the series connected diodes 2, 3, 4 and 5, likewise connected across conductor 32 and line L2. There is also a diode 6 provided with a control connection 41, which connects with the conductor 32 through the resistor 42. One side of the diode 6 connects with line L2, and the other side connects with one side of the coil of relay switch 34, through the conductor 43. The other side of the coil of relay switch 34 is connected by conductor 44 to line L1, through the resistor 46. A condensor 47 connects to conductors 43 and 44, and is therefore shunted across the coil of relay switch 34.
  • X9 e tsrae nsputre t t components can be as follows: Diode 1, IN4997; each of diodes 2, 3, 4 and 5, IN4997; diode 6, 2N3670; resistor 42, 47 ohms; resistor 46, 600 ohms; and condensor 47,50 mfd. 'Iihe above numbers refer to standard man ufacturers specifications for solid state diodes.
  • the system and method described above has a number of advantages over prior hydraulic systems for the selective operation of main valves. As previously mentioned, it is difficult to prevent leakage past the several control valves 23 of such a system, and the cummulative effect of this leakage causes more or less continuous leakage flow of hydraulic liquid from the supply source.
  • this supply source is an accumulator, eitcessive demands are made upon the pump and associated parts which are provided for maintaining the desired pressure level in the accumulator.
  • the only possible leakage during standby is through'the isolation valve 37, and this valve can be made in such a manner that leakage is minimal. As a result, the desired pressure level can be maintained in the accumulator with minimum operation of the pressure pump 13.
  • a plurality of main flow control valves each provided with a hydraulic power operator adapted to be energized to carry out a valve operating cycle, means including a hydraulic accumulator for supplying hydraulic liquid under pressure, a control valve for the hydraulic operator of each of the main valves, means forming fluid connections between each control valve and the corresponding operator, means forming fluid connections between each control valve and a common manifold adapted to receive hydraulic liquid under pressure, solenoid means adapted to be electrically.
  • circuitry connected to said solenoids, said circuitry including control switches adapted to be selectively operated for energizing any one of said solenoids, current supply lines connected to the circuitry, the circuitry having one conductor connected to one side of all of the solenoids and also connected to one of said current supply lines, the other one of the current supply lines being connected to one sideof the control switches, means forming a hydraulic fluid connection between the hydraulic accumulator and said common manifold, a normally closed isolation valve interposed in said lastnamed connecting means, said isolation valve being adapted to be actuated 'to open thesame, and means serving to actuate said isolation valve to open the same in response to operation of any one of said switches.
  • isolation valve is adapted to be electrically operated to open the same, and electronic means incorporated in the electrical circuitry for detecting the operation of one of said switches and for actuating said isolation valve. Whereby said isolation valve is opened responsive to operation of said switch.
  • a method for the operation of a plurality of valves making use of a plurality of main flow control valves each provided with a hydraulic power operator adapted to be energized to carry out a valve operating cycle, means including a hydraulic accumulator for supplying hydraulic liquid under pressure, a control valve forthe hydraulic operator of each of the main valves, means forming hydraulic fluid connections between each control valve and the corresponding operator, means forming hydraulic fluid connections between each control valve and a common manifold adapted to receive hydraulic liquid under pressure, solenoid means adapted to be electrically energized and associated with each control valve to effect conditioning of the control valve whereby application of hydraulic liquid under pressure to the corresponding operator causes an operating cycle of the main valve, and electrical circuitry connected to said solenoids, said circuitry including control switches adapted to be selectively operated for energizing any one of said solenoids and a source of current supply, the circuitry having one common conductor connected to one side of all of the solenoids and also connected to one of said current supply lines, the other one of

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Fluid-Driven Valves (AREA)
  • Magnetically Actuated Valves (AREA)
  • Valve Device For Special Equipments (AREA)
US00315446A 1972-12-15 1972-12-15 Hydraulic valve system and method Expired - Lifetime US3807450A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US00315446A US3807450A (en) 1972-12-15 1972-12-15 Hydraulic valve system and method
CA187,499A CA990177A (en) 1972-12-15 1973-12-06 Hydraulic valve system and method
GB5683373A GB1418226A (en) 1972-12-15 1973-12-07 Hydraulic valve system and method
JP48140252A JPS5225570B2 (en, 2012) 1972-12-15 1973-12-15
IT7332255Q IT1002340B (it) 1972-12-15 1973-12-27 Sistema idraulico a valvole e meto do per controllarlo

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00315446A US3807450A (en) 1972-12-15 1972-12-15 Hydraulic valve system and method

Publications (1)

Publication Number Publication Date
US3807450A true US3807450A (en) 1974-04-30

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Application Number Title Priority Date Filing Date
US00315446A Expired - Lifetime US3807450A (en) 1972-12-15 1972-12-15 Hydraulic valve system and method

Country Status (5)

Country Link
US (1) US3807450A (en, 2012)
JP (1) JPS5225570B2 (en, 2012)
CA (1) CA990177A (en, 2012)
GB (1) GB1418226A (en, 2012)
IT (1) IT1002340B (en, 2012)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2258842C2 (ru) * 2003-09-22 2005-08-20 Федеральное государственное унитарное предприятие "Центральное морское конструкторское бюро "Алмаз" Гидравлическая система с автоматическим отключением подачи гидравлической жидкости потребителям
RU2354857C1 (ru) * 2007-08-15 2009-05-10 Селиванов Сергей Николаевич Гидравлическая система технического объекта
CN109458352A (zh) * 2018-10-30 2019-03-12 浙江水利水电学院 一种离心泵流量调节装置及其制造方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3437098A (en) * 1965-10-25 1969-04-08 North American Utility Constru System of automatic controls for gas mixing
US3523675A (en) * 1967-12-18 1970-08-11 M & J Valve Co Valve operating apparatus with locking means
US3580282A (en) * 1968-10-24 1971-05-25 M & J Valve Co Valve-operating system
US3636977A (en) * 1970-03-04 1972-01-25 Abex Corp Electrohydraulic flow control circuit
US3682575A (en) * 1970-12-10 1972-08-08 Karl Guddal Concrete pump
US3708047A (en) * 1970-01-20 1973-01-02 Zahnradfabrik Friedrichshafen Electro-hydraulic selector for the control of multiple loads

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3437098A (en) * 1965-10-25 1969-04-08 North American Utility Constru System of automatic controls for gas mixing
US3523675A (en) * 1967-12-18 1970-08-11 M & J Valve Co Valve operating apparatus with locking means
US3580282A (en) * 1968-10-24 1971-05-25 M & J Valve Co Valve-operating system
US3708047A (en) * 1970-01-20 1973-01-02 Zahnradfabrik Friedrichshafen Electro-hydraulic selector for the control of multiple loads
US3636977A (en) * 1970-03-04 1972-01-25 Abex Corp Electrohydraulic flow control circuit
US3682575A (en) * 1970-12-10 1972-08-08 Karl Guddal Concrete pump

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2258842C2 (ru) * 2003-09-22 2005-08-20 Федеральное государственное унитарное предприятие "Центральное морское конструкторское бюро "Алмаз" Гидравлическая система с автоматическим отключением подачи гидравлической жидкости потребителям
RU2354857C1 (ru) * 2007-08-15 2009-05-10 Селиванов Сергей Николаевич Гидравлическая система технического объекта
CN109458352A (zh) * 2018-10-30 2019-03-12 浙江水利水电学院 一种离心泵流量调节装置及其制造方法

Also Published As

Publication number Publication date
GB1418226A (en) 1975-12-17
JPS4996313A (en, 2012) 1974-09-12
JPS5225570B2 (en, 2012) 1977-07-08
IT1002340B (it) 1976-05-20
CA990177A (en) 1976-06-01

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