Hydraulic axial piston regulating valve and its application
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F16K-001/12
F16K-031/02
G05B-013/02
F16K-031/122
출원번호
US-0321181
(2010-05-19)
등록번호
US-8931504
(2015-01-13)
우선권정보
HR-P 20090295 A (2009-05-20); HR-P 20100273 A (2010-05-17)
국제출원번호
PCT/HR2010/000014
(2010-05-19)
§371/§102 date
20111118
(20111118)
국제공개번호
WO2010/133902
(2010-11-25)
발명자
/ 주소
Canjuga, Slavko
출원인 / 주소
Hydromat-Inzenjering D.O.O.
대리인 / 주소
Haszko, Dennis R.
인용정보
피인용 횟수 :
3인용 특허 :
13
초록▼
The present invention applies to the hydraulic axial piston regulating valve with a linear position sensor, consisting of the valve body (1) and the central part (2), around which the fluid flows when the valve is opened, the hydraulic cylinder (3) with the piston (4) and the piston rod (5), to whic
The present invention applies to the hydraulic axial piston regulating valve with a linear position sensor, consisting of the valve body (1) and the central part (2), around which the fluid flows when the valve is opened, the hydraulic cylinder (3) with the piston (4) and the piston rod (5), to which the valve regulating piston (12) is firmly fastened. The linear position sensor (8) is placed inside the hydraulic cylinder, and in the electric version of the valve, the sensor with the magnetostrictive waveguide (20) is used. The present invention applies also to the utilization of the linear response of such valves for the regulation purpose using various driving aids; as e.g. electro-hydraulic drive, pneumatic drive or autonomous drive using the energy of the fluid flowing in the pipeline.
대표청구항▼
1. A hydraulic axial piston regulating valve, said valve comprising: a valve body (1) and a central part (2) around which flows a fluid when said valve is in an opened state, and where said central part (2) is connected by one or more ribs (16) with said valve body (1), where said ribs (16) are equi
1. A hydraulic axial piston regulating valve, said valve comprising: a valve body (1) and a central part (2) around which flows a fluid when said valve is in an opened state, and where said central part (2) is connected by one or more ribs (16) with said valve body (1), where said ribs (16) are equipped with hydraulic channels (17) and additional channels for guides (18);said central part (2) with a hydraulic cylinder (3) in communication with said hydraulic channels (17) inside which there is a hydraulic piston body (4) and a piston rod (5) to which a regulating piston (12) is connected; one or more seals (11) continuously sealing between said central part (2) and said regulating piston (12), and one or more seals (14) between said regulating piston (12) and an exit part of said valve (15), which seal only when said valve is closed; a linear position sensor (8) of said regulating piston (12) being positioned centrally inside said hydraulic cylinder (3) of said central part (2) of said valve;movement of said regulating piston (12) being defined with regard to said piston rod (5); andsaid regulating piston (12) being equipped with grooves and borings for hydrostatic unloading of said regulating piston (12), andwherein said linear position sensor (8) provides electrical conversion of a distance (19) into a measurable value which is transmitted through one or more of said borings (18) drilled in said ribs (16) by wires and conducted from said central part (2) of said valve body (1), and said linear position sensor (8) is closed up by a cover (7) of said valve,wherein data acquired from said linear position sensor (8) on said regulating piston (12) position is additionally numerically processed in a regulating valve processor (28), andwherein said valve is utilized for instances of reversed fluid flow or hydraulic shock, where driving energy is provided by working fluid via a faucet (38), and via a fluid pressure transmitter (39) said driving energy is led to a control cylinder (57), directly or via control valves, and said control cylinder (57) controls said hydraulic cylinder (3) via a throttling check valve (23). 2. The valve according to claim 1, wherein said regulating piston (12) has in its head a spring (6) which at one side thrusts against an outside of said hydraulic cylinder (3), and at an opposite side against an inside bottom of said regulating piston (12); andsaid spring (6) has an elastic energy sufficient to safely place said regulating piston (12) into a position to close completely fluid flow through said valve in case of pressure loss in said hydraulic channels (17). 3. The valve according to claim 1, wherein return of said regulating piston (12) into its closed position uses only hydraulic pressure from an external source of pressurized fluid (27). 4. The valve according to claim 1, wherein said valve is utilized in closed loop PID regulation where said regulating valve processor (28), autonomously or according to instructions from a remote control station (29), executes protocol according to acquired data from pressure probes (25, 26), flow gauge (24) and said linear position sensor (8), and where for closing of said valve energy of said spring (6) or energy accumulated in an external fluid pressure source (27) or their combination is used. 5. The valve according to claim 1, wherein movement of said regulating piston (12) in both directions is done by compressed air with aid of a pneumo-hydraulic pressure amplifier (31). 6. The valve according to claim 1, wherein positioning of said regulating piston (12) is controlled by a manual pump (35). 7. The valve according to claim 1, wherein said control cylinder (57) is pilot controlled by at least one of said control valves (58, 59) connected to said working fluid via said fluid pressure transmitter (39). 8. The valve according to claim 7, wherein said control cylinder (57) is controlled by means of additional stimulation at said control valve (58) connected to a fluid receiving vessel (43). 9. A hydraulic axial piston regulating valve, said valve comprising: a valve body (1) and a central part (2) around which flows a fluid when said valve is in an opened state, and where said central part (2) is connected by one or more ribs (16) with said valve body (1), where said ribs (16) are equipped with hydraulic channels (17) and additional channels for guides (18);said central part (2) with a hydraulic cylinder (3) in communication with said hydraulic channels (17) inside which there is a hydraulic piston body (4) and a piston rod (5) to which a regulating piston (12) is connected;one or more seals (11) continuously sealing between said central part (2) and said regulating piston (12), and one or more seals (14) between said regulating piston (12) and an exit part of said valve (15), which seal only when said valve is closed;a linear position sensor (8) of said regulating piston (12) being positioned centrally inside said hydraulic cylinder (3) of said central part (2) of said valve; andmovement of said regulating piston (12) being defined with regard to said piston rod (5); andsaid regulating piston (12) being equipped with grooves and borings for hydrostatic unloading of said regulating piston (12),wherein said linear position sensor (8) provides electrical conversion of a distance (19) into a measurable value which is transmitted through one or more of said borings (18) drilled in said ribs (16) by wires and conducted from said central part (2) of said valve body (1), and said linear position sensor (8) is closed up by a cover (7) of said valve,wherein data acquired from said linear position sensor (8) on said regulating piston (12) position is additionally numerically processed in a regulating valve processor (28), andwherein said valve is utilized as a check-valve during autonomous operation, where driving energy is provided by working fluid via a faucet (37), and via a fluid pressure transmitter (39) said driving energy is led to a control cylinder (57), directly or via control valves, and said control cylinder (57) controls said hydraulic cylinder (3) via a throttling check valve (23). 10. The valve according to claim 9, wherein said control cylinder (57) is pilot controlled by at least one of said control valves (58, 59) connected to said working fluid via said fluid pressure transmitter (39). 11. The valve according to claim 10, wherein said control cylinder (57) is controlled by additional stimulation at said control valve (58) connected to a fluid receiving vessel (43). 12. The valve according to claim 11, wherein said valve is utilized in a safety connection enabling forced closing upon rupture of a pressure line (48). 13. A hydraulic axial piston regulating valve, said valve comprising: a valve body (1) and a central part (2) around which flows a fluid when said valve is in an opened state, and where said central part (2) is connected by one or more ribs (16) with said valve body (1), where said ribs (16) are equipped with hydraulic channels (17) and additional channels for guides (18);said central part (2) with a hydraulic cylinder (3) in communication with said hydraulic channels (17) inside which there is a hydraulic piston body (4) and a piston rod (5) to which a regulating piston (12) is connected;one or more seals (11) continuously sealing between said central part (2) and said regulating piston (12), and one or more seals (14) between said regulating piston (12) and an exit part of said valve (15), which seal only when said valve is closed;a linear position sensor (8) of said regulating piston (12) being positioned centrally inside said hydraulic cylinder (3) of said central part (2) of said valve; andmovement of said regulating piston (12) being defined with regard to said piston rod (5); andsaid regulating piston (12) being equipped with grooves and borings for hydrostatic unloading of said regulating piston (12),wherein said linear position sensor (8) provides electrical conversion of a distance (19) into a measurable value which is transmitted through one or more of said borings (18) drilled in said ribs (16) by wires and conducted from said central part (2) of said valve body (1), and said linear position sensor (8) is closed up by a cover (7) of said valve,wherein data acquired from said linear position sensor (8) on said regulating piston (12) position is additionally numerically processed in a regulating valve processor (28), andwherein said valve is utilized to reduce an input pressure p1 to an exit pressure p2 and for maintaining their difference at a proportional value, where driving energy is provided by working fluid from one or more faucets (37, 38), and where via corresponding fluid pressure transmitters (39) said pressures p1 and p2 are led to a control cylinder (57), directly or via control valves, and said control cylinder (57) controls operation of said hydraulic cylinder (3), which drives a regulating piston (12), via throttling check valves (22, 23). 14. The valve according to claim 13, wherein said control cylinder (57) is pilot controlled by means of one or two proportional control valves (60) connected via said corresponding fluid pressure transmitters (39) to said working fluid via said faucets (37, 38). 15. The valve according to claim 14, wherein all hydraulic lines are free from said fluid pressure transmitters (39) and said working fluid enters input chambers of said control cylinder (57), directly or via one or more control valves (58, 59, 60), while a hydraulic circuit of output chambers of said control cylinder (57) and said hydraulic cylinder (3) are completely separated from said working fluid.
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