# US 2020/0400046 A1 · Hydraulic valve with linear adjustable throttling gate and a hydraulic velocity fuse throttling gate > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0400046 A1 - Document ID: US20200400046A1 - Status: Published application - Kind: A1 - Application number: 16/901,062 - Filed: 2020-06-15 - Published: 2020-12-24 - Earliest claimed: 2019-06-19 - Assignees: Tenet Hydraulics Co. - Applicants: Tenet Hydraulics Co. - Inventors: Christopher John Walter - Web page: https://patentgrep.com/patent/US20200400046A1 ## CPC - F01L 9/10: by fluid means, e.g. hydraulic - E21B 19/006: {including heave compensators} - F16K 17/04: spring-loaded - F16K 31/047: {characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means (F16K31/043 takes precedence)} - F16K 31/122: the fluid acting on a piston (F16K31/143, F16K31/163, F16K31/363, F16K31/383 take precedence) - F16K 31/508: {the actuating element being rotatable, non-rising, and driving a non-rotatable axially-sliding element} - B63B 39/03: by transferring liquids - E21B 19/002: {specially adapted for underwater drilling (E21B19/09, E21B19/143 take precedence)} - F01L 2305/02: Mounting of rollers - F01L: CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES - E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS - F16K: VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING {(devices for emptying and evacuating the excess liquid in valves or conduits F16L55/07)} - B63B: SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING (arrangements of vessel ventilation, heating, cooling, or air-conditioning B63J2/00; floating substructures as supports of dredgers or soil-shifting machines E02F9/06) ## Abstract A hydraulic valve having a body defining an inlet and an outlet. A motor is supported by the body and operates a shaft extending through an interior of the body, the shaft terminating in a gate. A spring is supported within the housing and influences the gate in an open position to permit fluid flow between the inlet and outlet. Upon the occurrence of a pressure differential resulting from a fluid flow through the inlet exceeding a biasing force of the spring, the gate is caused to displace against a valve seat communicating the inlet with the outlet in order to interrupt fluid flow in a standby mode and to define a closed position. The motor operates in a further throttling mode to linearly and incrementally displace the gate between the open and closed positions said outlet and in order to adjust flow through the outlet. ## Claims ### Claim 1 A hydraulic valve, comprising: a body having an inlet and an outlet; a motor supported by said body and operating a shaft extending through an interior of said body, said shaft terminating in a gate; a spring supported within said housing and influencing said gate in an open position to permit fluid flow between the inlet and outlet; upon occurrence of a pressure differential resulting from a fluid flow through the inlet exceeding a biasing force of said spring, said gate being caused to displace against a valve seat communicating the inlet with the outlet in order to interrupt fluid flow in a standby mode and to define a closed position; and said motor operating in a throttling mode to linearly and incrementally displace said gate between the open and closed positions in order to adjust flow through the outlet. ### Claim 2 (depends on 1) The valve as described in claim 1, said shaft further comprising a driven shaft and a roller screw shaft, said roller screw shaft being rotatable with said driven shaft in the throttling mode and linearly displaceable relative thereto in the standby mode. ### Claim 3 (depends on 2) The valve as described in claim 2, further comprising said motor communicating with said driven shaft via a driving timing belt pulley supported within an upper end of said body and accessible upon removal of a cover, said driving timing belt pulley driving a timing belt connected further to a driven timing belt pulley which in turn rotates said driven shaft. ### Claim 4 (depends on 2) The valve as described in claim 2, further comprising said driven shaft being connected to said roller screw shaft via a male spline on said driven shaft and a mating female spline on said roller screw shaft. ### Claim 5 (depends on 2) The valve as described in claim 2, further comprising a pair of upper and lower solenoid valves which are open in the standby mode and closed in the throttling mode. ### Claim 6 (depends on 2) The valve as described in claim 2, further comprising a valve position sensor operating in a continuous feedback loop with said motor to adjust said gate in said throttling mode. ### Claim 7 (depends on 2) The valve as described in claim 2, said roller screw shaft further comprising a section with a larger diameter and a seating seal ring groove which forms a piston that seals against a sleeve configured within said body. ### Claim 8 (depends on 7) The valve as described in claim 7, further comprising inter-engaging pluralities of male and female helical threads configured in opposing fashion between each of a bottom axial extending exterior portion of said roller screw shaft and mating opposing interior helical threads of a roller screw nut fixed within said body, such that rotation of said driven shaft in said throttling mode is communicated to said roller screw shaft to facilitate displacement of said gate. ### Claim 9 (depends on 7) The valve as described in claim 7, further comprising said spring seating between an enlarged annular extending and diameter end portion of said roller screw shaft and an annular bottom support of said valve proximate said piston and the outlet. ### Claim 10 A passive heave tensioner assembly supported upon a floating platform and adapted for use with a marine riser, the platform connected, via any number of extending supports, to a tensioner ring in turn secured to an outer barrel portion of a slip joint assembly, with a further inner telescopic barrel portion displace-ably supported relative to the outer barrel portion in order to facilitate vertical heave compensating adjustment between the portions responsive to up and down motion, said assembly comprising: a plurality of tensioner cylinders arranged in a circumferential array around the platform, said tensioner cylinders each further including internally displacing pistons with extending piston rods connected to the tensioner ring at remote ends thereof; a plurality of hydraulic isolation type valves, each supplied by an inlet line extending from a hydraulic fluid accumulator, said valves each including an outlet line extending to a selected one of said tensioner cylinders; said valves each further including: a body having an inlet communicating with said inlet line and an outlet communicating with said outlet line; a motor supported by said body and operating a shaft extending through an interior of said body, said shaft terminating in a gate; a spring supported within said housing and influencing said gate in an open position to permit fluid flow between the inlet and outlet; upon occurrence of a pressure differential resulting from a fluid flow through the inlet exceeding a biasing force of said spring, said gate being caused to displace against a valve seat communicating the inlet with the outlet in order to interrupt fluid flow to said tensioner cylinder in a standby mode and to define a closed position; and said motor operating in a throttling mode to linearly and incrementally displace said gate between the open and closed positions in order to adjust flow through the outlet to said tensioner cylinder. ### Claim 11 (depends on 10) The tensioner assembly of claim 10, further comprising high pressure vessels supplying said accumulators via supply lines. ### Claim 12 (depends on 10) The tensioner assembly of claim 10, further comprising low pressure vessels supplying upper end locations of each of said tensioner cylinders located on opposite sides of said pistons. ### Claim 13 (depends on 10) The tensioner assembly as described in claim 10, said shaft for each of said valves further comprising a driven shaft and a roller screw shaft, said roller screw shaft being rotatable with said driven shaft in the throttling mode and linearly displaceable relative thereto in the standby mode. ### Claim 14 (depends on 13) The tensioner assembly of claim 13, further comprising said motor communicating with said driven shaft via a driving timing belt pulley supported within an upper end of said body and accessible upon removal of a cover, said driving timing belt pulley driving a timing belt connected further to a driven timing belt pulley which in turn rotates said driven shaft. ### Claim 15 (depends on 13) The tensioner assembly of claim 13, further comprising said driven shaft being connected to said roller screw shaft via a male spline on said driven shaft and a mating female spline on said roller screw shaft. ### Claim 16 (depends on 13) The tensioner assembly of claim 13, further comprising a pair of upper and lower solenoid valves incorporated into each of said valve bodies which are open in the standby mode and closed in the throttling mode. ### Claim 17 (depends on 13) The tensioner assembly of claim 13, further comprising a valve position sensor incorporated into each of said valve bodies and operating in a continuous feedback loop with said motor to adjust said gate in said throttling mode. ### Claim 18 (depends on 13) The tensioner assembly as described in claim 13, said roller screw shaft further comprising a section with a larger diameter and a seating seal ring groove which forms a piston that seals against a sleeve configured within said valve body. ### Claim 19 (depends on 18) The tensioner assembly as described in claim 18, further comprising inter-engaging pluralities of male and female helical threads configured in opposing fashion between each of a bottom axial extending exterior portion of said roller screw shaft and mating opposing interior helical threads of a roller screw nut fixed within said valve body, such that rotation of said driven shaft in said throttling mode is communicated to said roller screw shaft to facilitate displacement of said gate. ### Claim 20 (depends on 18) The tensioner assembly as described in claim 18, further comprising said spring seating between an enlarged annular extending and diameter end portion of said roller screw shaft and an annular bottom support of said valve proximate said piston and the outlet.