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Undersea hydraulic coupling
1. An undersea hydraulic coupling, comprising: (a) a body having a longitudinal bare extending therethrough from a first end to a second end thereof; the first end of the body connectable to an opposing coupling member and the second end of the body connectable to a hydraulic line; the bore having a first internal shoulder intermediate the bore and an internal collar adjacent the second end of the body; (b) a sleeve in the longitudinal bore, the sleeve having a second internal shoulder; the sleeve having a first end that seals against the first internal shoulder when the sleeve is in the closed position, and having a second end that abuts the internal collar when the sleeve is in the fully open position; (c) a first spring extending between the internal collar and the sleeve for biasing the sleeve to the closed position against the first internal shoulder; the sleeve moving away from the first internal shoulder toward the fully open position when the body is connected to the opposing coupling member that provides hydraulic fluid pressure in the first end of the bore acting against the sleeve that is greater than the spring force of the first spring and any hydraulic fluid pressure in the second end of the bore acting against the sleeve; (d) a poppet valve in the sleeve, the poppet valve in sealing engagement with the second internal shoulder to block fluid flow through the bore when the sleeve is in the closed position; (e) an actuator extending between the collar and the poppet valve, the poppet valve becoming disengaged from the second internal shoulder to allow fluid flow through the bore when the sleeve begins moving toward the fully open position and the poppet valve abuts the actuator, the poppet valve becoming spaced further from the second internal shoulder until the sleeve reaches the fully open position when the second end of the sleeve abuts the collar; and (f) a second spring extending between the first end of the sleeve and the poppet valve for biasing the poppet valve against the second internal shoulder, the poppet valve disengaging from the second internal shoulder when the body is disconnected from the opposing coupling member and hydraulic fluid pressure in the second end of the bore acting against the poppet valve is greater than the spring force of the second spring and any hydraulic fluid pressure in the first end of the bore acting against the poppet valve.
2. The undersea hydraulic coupling wherein the first spring is stronger than the second spring.
3. The undersea hydraulic coupling further comprising a radial seal between the sleeve and the longitudinal bore of the coupling member.
4. The undersea hydraulic coupling wherein the actuator is a longitudinal member in the longitudinal bore adjacent the second end of the body.
5. An undersea hydraulic coupling, comprising: (a) a body having a first end, a second end, a bore and a first shoulder in the bore; the first end and second end connectable to sources of hydraulic fluid pressure; (b) a sleeve in the bore slideable from a first position against the first shoulder to a second position spaced from the first shoulder, a collar in the bore, and a first spring between the collar and the sleeve biasing the sleeve toward the first position, the sleeve having a second internal shoulder; (c) a valve in the sleeve sealing against the second shoulder when the sleeve is in the first position, the valve becoming disengaged from the second shoulder when the sleeve is in the second position spaced from the first shoulder, the sleeve moving to the second position when the first end of the body is connected to a hydraulic fluid pressure source acting against the first end of the sleeve exceeding the bias force of the first spring aid any hydraulic fluid pressure acting against the second end of the sleeve, the second shoulder separating further from the valve until the second end of the sleeve abuts the collar; and (d) a second spring between the sleeve and the valve biasing the valve against the second shoulder, the valve being movable away from the second shoulder when the second end of the body is connected to a hydraulic fluid pressure source acting against the second end of the sleeve exceeding the bias force of the second spring and any hydraulic fluid pressure acting against the first end of the sleeve.
6. The undersea hydraulic coupling of further comprising an actuator positioned to contact the valve when the sleeve moves to the second position.
7. The undersea hydraulic coupling of wherein the fluid pressure to urge the sleeve toward the second position exceeds the fluid pressure to urge the valve toward the second position.
8. The undersea hydraulic coupling of further comprising a radial seal between the sleeve and the bore.
9. The undersea hydraulic coupling of wherein the shoulder in the bore comprises an inclined surface, and the shoulder in the sleeve comprises an inclined surface.
10. An undersea hydraulic coupling comprising: (a) a cylindrical body having an internal bore extending from a first end to a second end thereof, the first end connectable to an opposing coupling member and the second end connectable to a hydraulic line, an internal shoulder intermediate the internal bore; and an internal collar adjacent the second end of the internal bore; (b) a sleeve in the central bore, the sleeve having a first end and a second end, an internal shoulder, and a first spring extending between the collar and the sleeve for urging the first end of the sleeve against the internal shoulder of the bore, the first end of the sleeve becoming spaced from the internal shoulder of the bore and the second end of the sleeve moving toward the internal collar when the body is connected to the opposing coupling member to provide sufficient hydraulic fluid pressure against the sleeve to compress the first spring; (c) a valve in the sleeve and a second spring extending between the first end of the sleeve and the valve, the second spring urging the valve against the internal shoulder of the sleeve, the valve becoming spaced from the internal shoulder of the sleeve when the body is disconnected from the opposing coupling member and there is sufficient hydraulic fluid pressure against the valve to compress the second spring; and (d) an actuator extending between the collar and the valve for blocking the valve from moving toward the second end of the internal bore so the internal shoulder of the sleeve becomes spaced from the valve to allow hydraulic flow past the valve when the first end of the sleeve is spaced from the internal shoulder of the bore, the sleeve becoming further spaced from the valve until the second end of the sleeve abuts the collar.
2. The undersea hydraulic coupling wherein the first spring is stronger than the second spring.
3. The undersea hydraulic coupling further comprising a radial seal between the sleeve and the longitudinal bore of the coupling member.
4. The undersea hydraulic coupling wherein the actuator is a longitudinal member in the longitudinal bore adjacent the second end of the body.
5. An undersea hydraulic coupling, comprising: (a) a body having a first end, a second end, a bore and a first shoulder in the bore; the first end and second end connectable to sources of hydraulic fluid pressure; (b) a sleeve in the bore slideable from a first position against the first shoulder to a second position spaced from the first shoulder, a collar in the bore, and a first spring between the collar and the sleeve biasing the sleeve toward the first position, the sleeve having a second internal shoulder; (c) a valve in the sleeve sealing against the second shoulder when the sleeve is in the first position, the valve becoming disengaged from the second shoulder when the sleeve is in the second position spaced from the first shoulder, the sleeve moving to the second position when the first end of the body is connected to a hydraulic fluid pressure source acting against the first end of the sleeve exceeding the bias force of the first spring aid any hydraulic fluid pressure acting against the second end of the sleeve, the second shoulder separating further from the valve until the second end of the sleeve abuts the collar; and (d) a second spring between the sleeve and the valve biasing the valve against the second shoulder, the valve being movable away from the second shoulder when the second end of the body is connected to a hydraulic fluid pressure source acting against the second end of the sleeve exceeding the bias force of the second spring and any hydraulic fluid pressure acting against the first end of the sleeve.
6. The undersea hydraulic coupling of further comprising an actuator positioned to contact the valve when the sleeve moves to the second position.
7. The undersea hydraulic coupling of wherein the fluid pressure to urge the sleeve toward the second position exceeds the fluid pressure to urge the valve toward the second position.
8. The undersea hydraulic coupling of further comprising a radial seal between the sleeve and the bore.
9. The undersea hydraulic coupling of wherein the shoulder in the bore comprises an inclined surface, and the shoulder in the sleeve comprises an inclined surface.
10. An undersea hydraulic coupling comprising: (a) a cylindrical body having an internal bore extending from a first end to a second end thereof, the first end connectable to an opposing coupling member and the second end connectable to a hydraulic line, an internal shoulder intermediate the internal bore; and an internal collar adjacent the second end of the internal bore; (b) a sleeve in the central bore, the sleeve having a first end and a second end, an internal shoulder, and a first spring extending between the collar and the sleeve for urging the first end of the sleeve against the internal shoulder of the bore, the first end of the sleeve becoming spaced from the internal shoulder of the bore and the second end of the sleeve moving toward the internal collar when the body is connected to the opposing coupling member to provide sufficient hydraulic fluid pressure against the sleeve to compress the first spring; (c) a valve in the sleeve and a second spring extending between the first end of the sleeve and the valve, the second spring urging the valve against the internal shoulder of the sleeve, the valve becoming spaced from the internal shoulder of the sleeve when the body is disconnected from the opposing coupling member and there is sufficient hydraulic fluid pressure against the valve to compress the second spring; and (d) an actuator extending between the collar and the valve for blocking the valve from moving toward the second end of the internal bore so the internal shoulder of the sleeve becomes spaced from the valve to allow hydraulic flow past the valve when the first end of the sleeve is spaced from the internal shoulder of the bore, the sleeve becoming further spaced from the valve until the second end of the sleeve abuts the collar.
Ningbo Belt Pneumatic Machinery Co.,Ltd
