Rotary Check Valve

Patent metadata

Field	Value
Publication number	US-2016177664-A1
Application number	US-201414577710-A
Country	US
Kind code	A1
Filing date	Dec 19, 2014
Priority date	Dec 19, 2014
Publication date	Jun 23, 2016
Grant date	—

Abstract

A rotary check valve is disclosed having sealing surfaces between two sealing members that engage with a rotating shearing motion. The rotating shearing motion may shear debris between the sealing members and minimize or eliminate blockage of fluid passageways in the sealing members. In a closed position, the upper sealing member and lower sealing member are rotated such that fluid passageways in the upper sealing member and fluid passageways in the lower sealing member are not aligned and blocked by the sealing surfaces. The sealing members of the rotary check valve may be biased to a closed position via a spring.

First claim

What is claimed is:

1 . A valve, comprising:
a housing disposed around an axis; a first rotating member disposed within the housing and configured to rotate around the axis in a first circumferential direction, the first rotating member having a first sealing surface and at least one first fluid passageway; a second rotating member disposed within the housing and coaxial to the first rotating member, the second member configured to rotate around the axis in a second circumferential direction opposite the first circumferential direction, the second member having a second sealing surface comprising at least one second fluid passageway; wherein when the valve is in a closed position, the first sealing surface engages the second sealing surface to close the at least one first fluid passageway and at least one second fluid passageway; and wherein when the valve is in an open position, the first rotating member and the second rotating member are rotated such that the at least one first fluid passageway and at least second fluid passageway are aligned.

2 . The valve of claim 1 , comprising a spring disposed in the housing and configured to bias the first rotating member and the second rotating member along the axis to respective closed positions.

3 . The valve of claim 2 , wherein the spring is configured to enable translation of the first rotating member and second rotating member to respective open positions when a fluid pressure compresses the spring.

4 . The valve of claim 1 , comprising a body member, wherein the upper sealing member is disposed in the body member.

5 . The valve of claim 4 , wherein the body member comprises a helical groove and the housing comprises a pin configured to engage the helical groove, wherein movement of the pin along the helical groove facilitates translation and rotation of the first rotating member.

6 . The valve of claim 1 , comprising a stem member coupled to the second rotating member.

7 . The valve of claim 6 , wherein the stem member comprises a helical groove and the housing comprises a pin configured to engage the second helical groove, wherein movement of the pin along the helical groove facilitates translation and rotation of the second rotating member.

8 . A valve, comprising:
a housing, the housing comprises a first pin and a second pin; a body member disposed in the housing; a first rotating member disposed in the body member and having a first sealing surface and a first fluid passageway, the first rotating member comprising a first helical groove configured to receive the first pin, wherein movement of the pin along the helical groove correlates to rotation of the first rotating member between a closed position and an open position; a second rotating member disposed in the body member and having a second sealing surface and a second fluid passageway; wherein when the valve is in a closed position, the first sealing surface the first sealing surface engages the second sealing surface to close the first fluid passageway; and wherein when the valve is in an open position, the first rotating member is rotated to open the first fluid passageway.

9 . The valve of claim 8 , comprising a spring disposed in the housing and configured to bias the first rotating member to a respective closed position.

10 . The valve of claim 8 , wherein the spring is configured to enable translation of the first rotating member to a respective open position when a fluid pressure compresses the spring.

11 . The valve of claim 8 , wherein the second rotating member comprises a second fluid passageway and in a respective open position, the first rotating member and second rotating member are rotated to align the first fluid passageway with the second fluid passageway.

12 . The valve of claim 8 , comprising a stem member coupled to the second rotating member.

13 . The valve of claim 12 , wherein the housing comprises a second pin and the stem member comprises a second helical groove configured to receive the second pin, wherein movement of the second pin along the second helical groove correlates to rotation and translation of the second rotating member.

14 . The valve of claim 12 , wherein the stem member and the second rotating member are configured to translate along an axis and rotate around the axis when the valve is moved between the closed position and the open position.

15 . The valve claim 8 , wherein the second rotating member is coaxial with the first rotating member.

16 . The valve of claim 8 , wherein the body member and the first rotating member are configured to translate along an axis and rotate around the axis when the valve is moved between the closed position and the open position.

17 . A system, comprising:
a downhole tool comprising a pump; a valve coupled to the pump, the valve comprising: a housing disposed around a central axis; a first rotating member disposed within a housing and configured to translate along the axis and rotate around the axis in a first circumferential direction and translate along the axis, the first rotating member having a first sealing surface and at least one first fluid passageway; a second rotating member disposed within the housing and coaxial to the first rotating member, the second member configured to translate along the axis and rotate around the axis in a second circumferential direction opposite the first circumferential direction, the second member having a second sealing surface comprising at least one second fluid passageway; wherein when the valve is in a closed position, the first sealing surface engages the second sealing surface to close the at least one first fluid passageway and at least one second fluid passage; wherein when the valve is in the open position, the first rotating member and the second rotating member are rotated such that the at least one first fluid passageway and at least second fluid passage are aligned.

18 . The system of claim 17 , comprising a spring disposed in the housing and configured to bias the first rotating member and the second rotating member along the axis to respective closed positions.

19 . The system of claim 18 , wherein the body member comprises a helical groove and the housing comprises a pin configured to engage the helical groove, wherein movement of the pin along the helical groove facilitates translation and rotation of the first rotating member.

20 . The system of claim 17 , comprising a stem member, wherein the stem member comprises a helical groove and the housing comprises a pin configured to engage the second helical groove, wherein movement of the pin along the helical groove facilitates translation and rotation of the second rotating member.

Assignees

• Schlumberger Technology Corp

Inventors

• Kelly Robert
• Djibo Karidja Louise-Olivia
• Harms Kent D
• Luckett Walter

Classifications

• F16K3/08

  with circular plates rotatable around their centres · CPC title

• E21B34/08

  responsive to flow or pressure of the fluid obtained (E21B34/10 takes precedence) · CPC title

• F16K3/0254 Primary

  being operated by particular means · CPC title

• F16K15/025

  the valve being loaded by a spring (F16K15/03 - F16K15/12 take precedence) · CPC title

• E21B34/02 Primary

  in well heads · CPC title