Underwater hydraulic shuttle valve

Abstract

The invention discloses an underwater hydraulic shuttle valve. The technical problem that a valve element ring is prone to abrasion is solved. The hydraulic shuttle valve comprises a shuttle valve seat, a runner hole is formed in the shuttle valve seat, liquid inlet valve covers are connected to the two ends of the shuttle valve seat respectively, a liquid outlet valve cover is connected to the top of the shuttle valve seat, valve element sleeves are arranged at the two ends of the runner hole respectively, valve element holes are formed in the two valve element sleeves respectively, and a plurality of flow expanding grooves are formed in the ends, close to each other, of the two valve element sleeves respectively. A plurality of flow expanding grooves are formed in the flow channel hole and communicate with the corresponding valve element holes correspondingly, a valve element shaft is coaxially arranged in the flow channel hole, a valve element ring is arranged in the middle of the valve element shaft, a plurality of buffering grooves are formed in the edge positions of the two sides of the valve element ring correspondingly, and the buffering grooves are distributed in the circumferential direction of the valve element ring at equal intervals so as to achieve buffering and pressure reducing. Impact of fluid on the valve element ring can be relieved, abrasion of the valve element ring is relieved, the service life of the hydraulic shuttle valve is prolonged, and use durability of the hydraulic shuttle valve is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of hydraulic shuttle valves, and in particular relates to an underwater hydraulic shuttle valve. Background Art

[0002] The ocean is rich in oil and gas resources. The development of marine oil and gas has broad prospects, but also faces huge risks and challenges. Deepwater blowout preventers and control systems are key equipment to ensure the safety of deepwater drilling operations. Their function is to control the wellhead pressure, prevent blowouts and well surges, ensure the safety of personnel and equipment, and avoid marine environmental pollution and damage to oil and gas resources.

[0003] The control system of the deepwater BOP group is equipped with multiple control sources such as emergency control box, voice control box and ROV operation. In order to realize the control of a single actuator by multiple control sources, the output end of the control source of each sub-control system of the underwater BOP group needs to be connected to a hydraulic shuttle valve to meet the redundant control requirements of the underwater equipment.

[0004] The hydraulic shuttle valve is a key control element in the field of underwater hydraulic control. Due to the characteristics of high pressure, low temperature, and corrosion in the underwater environment, and the large impact of the fluid on the valve core ring in the hydraulic shuttle valve, the valve core ring is severely worn, which affects the service life and durability of the hydraulic shuttle valve and needs to be improved. Summary of the invention

[0005] In order to solve all or part of the above problems, the purpose of the present invention is to provide an underwater hydraulic shuttle valve, which can reduce the impact of fluid on the valve core ring and reduce the wear of the valve core ring, thereby improving the service life and durability of the hydraulic shuttle valve.

[0006] The present invention provides an underwater hydraulic shuttle valve, comprising a shuttle valve seat arranged horizontally, a flow channel hole penetrating the middle position of the shuttle valve seat in the horizontal direction, a liquid inlet valve cover connected to both ends of the shuttle valve seat, a liquid outlet valve cover connected to the top of the shuttle valve seat, a liquid outlet hole arranged on the top of the shuttle valve seat, and the liquid outlet hole communicating with the liquid outlet valve cover and the flow channel hole;

[0007] The two ends of the flow channel hole are respectively provided with valve core sleeves, the middle positions of the two valve core sleeves are respectively provided with valve core holes in the horizontal direction, and the ends of the two valve core sleeves close to each other are respectively provided with a plurality of expansion grooves, and the plurality of expansion grooves are arranged at equal intervals along the circumference of the valve core sleeve and are respectively connected with the corresponding valve core holes;

[0008] A valve core shaft is coaxially arranged in the flow channel hole, and a valve core ring is integrally formed in the middle position of the valve core shaft. When the valve core ring is located in the middle position of the flow channel hole, the two ends of the valve core shaft are tightly inserted into the corresponding valve core holes, and a plurality of buffer grooves are respectively arranged at the edge positions on both sides of the valve core ring, and the plurality of buffer grooves are arranged at equal intervals along the circumference of the valve core ring.

[0009] Optionally, the inner side wall of the buffer groove is configured as a quarter spherical surface, and the inner side wall of the buffer groove is tangent to the valve core sleeve in the axial direction and the radial direction.

[0010] Optionally, a first step groove is respectively provided at one end of the two valve core sleeves that are close to each other, and when one side of the valve core ring is tightly inserted into the corresponding first step groove, the multiple buffer grooves located on the same side of the valve core ring are completely inserted into the first step groove.

[0011] Optionally, conical chamfers are respectively provided at the edge positions of both ends of the valve core shaft.

[0012] Optionally, the two ends of the valve core sleeves that are away from each other are respectively integrally formed with positioning rings, second step grooves are respectively provided at the two ends of the flow channel hole, and the two positioning rings are respectively tightly inserted into the corresponding second step grooves, and the two liquid inlet valve covers are respectively connected to the shuttle valve seat by multiple screws, and the liquid inlet valve covers press and fix the corresponding valve core sleeves in the shuttle valve seat.

[0013] Optionally, annular support grooves are respectively provided at the edge positions of the two valve core sleeves away from one end, and a first sealing ring is respectively provided in each of the support grooves, and the first sealing ring is used to achieve sealing between the liquid inlet valve cover, the shuttle valve seat and the valve core sleeve.

[0014] Optionally, the inner walls of the two valve core sleeves are respectively provided with annular receiving grooves, and a second sealing ring is respectively provided in each receiving groove, and the inner wall of the second sealing ring can be tightly abutted against the outer wall of the valve core shaft to achieve sealing between the valve core sleeve and the valve core shaft.

[0015] Optionally, a third step groove is respectively provided at one end of the two valve core sleeves away from each other, and the two third step grooves are respectively connected to the corresponding receiving grooves, and a clamping ring is respectively provided in the two third step grooves, one side of the clamping ring is tightly abutted against the corresponding liquid inlet valve cover, and the other side is tightly abutted against the corresponding second sealing ring.

[0016] Optionally, a fourth step groove is provided on the top of the shuttle valve seat, the fourth step groove is connected to the liquid outlet hole, the bottom of the liquid outlet valve cover is tightly inserted into the fourth step groove, and the liquid outlet valve cover is connected to the shuttle valve seat by a plurality of screws.

[0017] Optionally, an annular sealing groove is provided at the bottom of the fourth step groove, a third sealing ring is provided in the sealing groove, and the third sealing ring is tightly abutted against the liquid outlet valve cover.

[0018] It can be seen from the above technical solution that the underwater hydraulic shuttle valve provided by the present invention has the following advantages:

[0019] The hydraulic shuttle valve has a plurality of buffer grooves respectively arranged at the edge positions on both sides of the valve core ring to achieve buffering and decompression of the fluid, thereby alleviating the impact of the fluid on the valve core ring and alleviating the wear of the valve core ring, thereby improving the service life and durability of the hydraulic shuttle valve.

[0020] Other features and advantages of the present invention will be set forth in the description which follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the technical solution of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the technical solution of the present invention and do not constitute a limitation to the technical solution of the present invention.

[0022] Figure 1 is a cross-sectional view of an underwater hydraulic shuttle valve in an embodiment of the present invention;

[0023] Figure 2 It is a structural schematic diagram of the valve core sleeve in an embodiment of the present invention;

[0024] Figure 3 A cross-sectional view of a valve core sleeve in an embodiment of the present invention;

[0025] Figure 4 It is a structural schematic diagram of the valve core shaft and the valve core ring in an embodiment of the present invention;

[0026] Figure 5 A cross-sectional view of a valve core shaft and a valve core ring in an embodiment of the present invention;

[0027] Figure 6 Schematic diagram of the use state of the underwater hydraulic shuttle valve in the embodiment of the present invention;

[0028] Figure 7 Schematic diagram of the use state of the underwater hydraulic shuttle valve in the embodiment of the present invention;

[0029] Figure 8 2 is a cross-sectional view of a shuttle valve seat in an embodiment of the present invention.

[0030] Description of reference numerals:

[0031] 1. Shuttle valve seat; 2. Flow channel hole; 3. Liquid inlet valve cover; 4. Liquid outlet valve cover; 5. Liquid outlet hole; 6. Connecting thread; 7. Valve core sleeve; 8. Valve core hole; 9. Expansion flow groove; 10. Valve core shaft; 11. Valve core ring; 12. Buffer groove; 13. First step groove; 14. Conical chamfer; 15. Positioning ring; 16. Second step groove; 17. Support groove; 18. First sealing ring; 19. Receiving groove; 20. Second sealing ring; 21. Third step groove; 22. Pressure ring; 23. Fourth step groove; 24. Sealing groove; 25. Third sealing ring. DETAILED DESCRIPTION

[0032] To make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other arbitrarily without conflict.

[0033] like Figure 1-Figure 8 The embodiment of the present invention is shown in the figure, which discloses an underwater hydraulic shuttle valve, including a shuttle valve seat 1 arranged horizontally, a flow channel hole 2 is arranged through the middle position of the shuttle valve seat 1 in the horizontal direction, and the two ends of the shuttle valve seat 1 are respectively connected to the liquid inlet valve cover 3. The middle position of the top of the shuttle valve seat 1 is connected to the liquid outlet valve cover 4, and the middle position of the top of the shuttle valve seat 1 is provided with a liquid outlet hole 5, and the liquid outlet hole 5 is connected to the liquid outlet valve cover 4 and the flow channel hole 2. At the same time, the liquid inlet valve cover 3 and the liquid outlet valve cover 4 are respectively provided with connecting threads 6 for connecting an external pipeline or a threaded joint with the liquid inlet valve cover 3 or the liquid outlet valve cover 4.

[0034] In one embodiment, Figure 1 , Figure 2 , Figure 3 As shown, valve core sleeves 7 are respectively provided at both ends of the flow channel hole 2, and valve core holes 8 are respectively provided in the middle of the two valve core sleeves 7 in the horizontal direction, and the valve core holes 8 are coaxially arranged with the flow channel hole 2. At the same time, a plurality of expansion grooves 9 are respectively provided at one end of the two valve core sleeves 7 close to each other, and the plurality of expansion grooves 9 are arranged at equal intervals along the circumference of the valve core sleeve 7, and are respectively connected with the corresponding valve core holes 8.

[0035] In one embodiment, Figure 1 , Figure 4 , Figure 5 As shown, a valve core shaft 10 is coaxially arranged in the flow channel hole 2, and a valve core ring 11 is integrally formed in the middle position of the valve core shaft 10. When the valve core ring 11 is located in the middle position of the flow channel hole 2, the two ends of the valve core shaft 10 are tightly inserted into the corresponding valve core holes 8 respectively, so that the valve core shaft 10 can slide smoothly in the horizontal direction.

[0036] In one embodiment, Figure 1, Figure 4 , Figure 5 As shown, a plurality of buffer grooves 12 are respectively arranged at the edge positions on both sides of the valve core ring 11, and the plurality of buffer grooves 12 are arranged at equal intervals along the circumference of the valve core ring 11. At the same time, the inner side wall of the buffer groove 12 is set to be a quarter spherical surface, and the inner side wall of the buffer groove 12 is tangent to the axial and radial directions of the valve core sleeve 7 to achieve buffering and decompression of the liquid.

[0037] In one embodiment, Figure 1 , Figure 3 , Figure 4 As shown, the two valve core sleeves 7 are respectively provided with a first step groove 13 at one end close to each other. When one side of the valve core ring 11 is tightly inserted into the corresponding first step groove 13, the multiple buffer grooves 12 located on the same side of the valve core ring 11 are completely inserted into the first step groove 13.

[0038] like Figure 6 As shown, when the fluid enters through the inlet valve cover 3 on the left, the valve core shaft 10 drives the valve core ring 11 to move to the right under the action of the fluid, until the right side of the valve core ring 11 is tightly stuck in the first step groove 13 on the right, so as to limit the valve core shaft 10 and the valve core ring 11. At this time, the multiple buffer grooves 12 located on the right side of the valve core ring 11 completely enter the first step groove 13 on the right, and the left end of the valve core shaft 10 escapes from the valve core hole 8 on the left. Subsequently, the fluid enters the multiple expansion grooves 9 on the right through the valve core hole 8 on the left, and then the fluid enters the flow channel hole 2 and is discharged through the outlet valve cover 4.

[0039] like Figure 7 As shown, when the fluid enters through the inlet valve cover 3 on the right, the valve core shaft 10 drives the valve core ring 11 to move to the left under the action of the fluid, until the left side of the valve core ring 11 is tightly stuck in the first step groove 13 on the left, so as to limit the valve core shaft 10 and the valve core ring 11. At this time, the multiple buffer grooves 12 on the left side of the valve core ring 11 completely enter the first step groove 13 on the left, and the right end of the valve core shaft 10 escapes from the valve core hole 8 on the right. Subsequently, the fluid enters the multiple expansion grooves 9 on the right through the valve core hole 8 on the right, and then the fluid enters the flow channel hole 2 and is discharged through the outlet valve cover 4.

[0040] The underwater hydraulic shuttle valve in this embodiment is provided with a plurality of buffer grooves 12 at the edges of both sides of the valve core ring 11 to achieve buffering and decompression of the fluid, so as to reduce the impact of the fluid on the valve core ring 11 and reduce the wear of the valve core ring 11, thereby improving the service life and durability of the hydraulic shuttle valve. At the same time, the inner side wall of the buffer groove 12 is a quarter spherical surface, and is tangent to the axial and radial directions of the valve core sleeve 7, so that after the fluid enters the flow channel hole 2 in the horizontal direction, the fluid can flow along the radial direction of the valve core ring 11 under the guidance of the inner side wall of the buffer groove 12, so as to reduce the impact of the fluid on the valve core ring 11.

[0041] In one embodiment, Figure 4 , Figure 5 As shown, conical chamfers 14 are respectively provided at the edge positions at both ends of the valve core shaft 10 to improve the guiding effect, so that the valve core shaft 10 can be smoothly inserted into the corresponding valve core hole 8, reducing the risk of the valve core shaft 10 getting stuck.

[0042] In one embodiment, Figure 1 , Figure 3 , Figure 8 As shown, the ends of the two valve core sleeves 7 that are away from each other are respectively integrally formed with positioning rings 15, and the two ends of the flow channel hole 2 are respectively provided with second step grooves 16, and the two positioning rings 15 are respectively tightly inserted into the corresponding second step grooves 16. At the same time, the two liquid inlet valve covers 3 are respectively connected to the shuttle valve seat 1 through a plurality of screws, and the liquid inlet valve covers 3 press and fix the corresponding valve core sleeves 7 in the shuttle valve seat 1 to achieve stable limiting of the valve core sleeves 7.

[0043] In one embodiment, Figure 1 , Figure 3 As shown, annular support grooves 17 are respectively provided at the edge positions of the two valve core sleeves 7 away from one end, and a first sealing ring 18 is respectively provided in each support groove 17. The first sealing ring 18 abuts against the inner side wall of the support groove 17, the end face of the liquid inlet valve cover 3 and the inner wall of the flow channel hole 2 respectively to achieve sealing between the liquid inlet valve cover 3, the shuttle valve seat 1 and the valve core sleeve 7.

[0044] In one embodiment, Figure 1 , Figure 2 As shown, the inner walls of the two valve core sleeves 7 are respectively provided with annular receiving grooves 19, and a second sealing ring 20 is respectively provided in each receiving groove 19, and the inner wall of the second sealing ring 20 can be tightly abutted against the outer wall of the valve core shaft 10, that is, when the valve core shaft 10 is inserted into the valve core hole 8, the second sealing ring 20 is tightly sleeved on the valve core shaft 10, thereby realizing the sealing between the valve core sleeve 7 and the valve core shaft 10.

[0045] In one embodiment, Figure 1 , Figure 3As shown, the ends of the two valve core sleeves 7 that are away from each other are respectively provided with third step grooves 21, and the two third step grooves 21 are respectively communicated with the corresponding receiving grooves 19. At the same time, the two third step grooves 21 are respectively provided with clamping rings 22, one side of the clamping ring 22 is tightly abutted with the corresponding liquid inlet valve cover 3, and the other side is tightly abutted with the corresponding second sealing ring 20, so as to realize the clamping and limiting of the second sealing ring 20.

[0046] In one embodiment, Figure 1 , Figure 8 As shown, the top of the shuttle valve seat 1 is provided with a fourth step groove 23, the fourth step groove 23 is communicated with the liquid outlet hole 5, the bottom of the liquid outlet valve cover 4 is tightly inserted into the fourth step groove 23, and the liquid outlet valve cover 4 is connected to the shuttle valve seat 1 through a plurality of screws. At the same time, the bottom of the fourth step groove 23 is provided with an annular sealing groove 24, the sealing groove 24 is provided with a third sealing ring 25, and the third sealing ring 25 is tightly abutted against the liquid outlet valve cover 4.

[0047] In this embodiment, the first sealing ring, the second sealing ring 20 and the third sealing ring 25 are respectively made of pressure-resistant and temperature-resistant rubber materials. Of course, in other embodiments, the sealing rings can also be made of other temperature-resistant and pressure-resistant materials, which are not listed in detail here.

[0048] As can be seen from the above, the hydraulic shuttle valve realizes buffering and decompression of the fluid by setting the buffer groove 12, so as to reduce the impact of the fluid on the valve core ring 11 and reduce the wear of the valve core ring 11, thereby improving the service life and durability of the hydraulic shuttle valve. At the same time, the inner side wall of the buffer groove 12 is a quarter spherical surface, and is tangent to the axial and radial directions of the valve core sleeve 7, so that after the fluid enters the flow channel hole 2 in the horizontal direction, the fluid can flow along the radial direction of the shuttle core ring 11 under the guidance of the inner side wall of the buffer groove 12, so as to reduce the impact of the fluid on the valve core ring 11.

[0049] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the present invention should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0050] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. An underwater hydraulic shuttle valve, characterized in that: It comprises a shuttle valve seat (1) arranged horizontally, a flow channel hole (2) penetrating the middle part of the shuttle valve seat (1) in the horizontal direction, two ends of the shuttle valve seat (1) are respectively connected to a liquid inlet valve cover (3), the top of the shuttle valve seat (1) is connected to a liquid outlet valve cover (4), a liquid outlet hole (5) is arranged on the top of the shuttle valve seat (1), and the liquid outlet hole (5) is connected to the liquid outlet valve cover (4) and the flow channel hole (2); The two ends of the flow channel hole (2) are respectively provided with valve core sleeves (7), the middle positions of the two valve core sleeves (7) are respectively provided with valve core holes (8) penetrating in the horizontal direction, and the ends of the two valve core sleeves (7) close to each other are respectively provided with a plurality of expansion grooves (9), and the plurality of expansion grooves (9) are arranged at equal intervals along the circumference of the valve core sleeve (7) and are respectively connected with the corresponding valve core holes (8); A valve core shaft (10) is coaxially arranged in the flow channel hole (2), and a valve core ring (11) is integrally formed in the middle position of the valve core shaft (10). When the valve core ring (11) is located in the middle position of the flow channel hole (2), the two ends of the valve core shaft (10) are tightly inserted into the corresponding valve core holes (8), and a plurality of buffer grooves (12) are respectively arranged at the edge positions on both sides of the valve core ring (11), and the plurality of buffer grooves (12) are arranged at equal intervals along the circumference of the valve core ring (11).

2. The underwater hydraulic shuttle valve according to claim 1, characterized in that: The inner side wall of the buffer groove (12) is configured as a quarter spherical surface, and the inner side wall of the buffer groove (12) is tangent to the valve core sleeve (7) in the axial direction and the radial direction.

3. The underwater hydraulic shuttle valve according to claim 1, characterized in that: A first step groove (13) is respectively provided at one end of the two valve core sleeves (7) that are close to each other. When one side of the valve core ring (11) is tightly inserted into the corresponding first step groove (13), the plurality of buffer grooves (12) located on the same side of the valve core ring (11) completely enter the first step groove (13).

4. The underwater hydraulic shuttle valve according to claim 1, characterized in that: Conical chamfers (14) are respectively provided at the edge positions of both ends of the valve core shaft (10).

5. The underwater hydraulic shuttle valve according to claim 1, characterized in that: A positioning ring (15) is formed integrally at one end of the two valve core sleeves (7) that is away from each other, and a second step groove (16) is provided at the two ends of the flow channel hole (2). The two positioning rings (15) are tightly inserted into the corresponding second step groove (16), and the two liquid inlet valve covers (3) are respectively connected to the shuttle valve seat (1) by a plurality of screws, and the liquid inlet valve covers (3) press and fix the corresponding valve core sleeve (7) in the shuttle valve seat (1).

6. The underwater hydraulic shuttle valve according to claim 5, characterized in that: Annular support grooves (17) are respectively arranged at the edge positions of the two valve core sleeves (7) away from one end, and a first sealing ring (18) is respectively arranged in each of the support grooves (17). The first sealing ring (18) is used to achieve sealing between the liquid inlet valve cover (3), the shuttle valve seat (1) and the valve core sleeve (7).

7. The underwater hydraulic shuttle valve according to claim 1, characterized in that: The inner side walls of the two valve core sleeves (7) are respectively provided with an annular receiving groove (19), and each receiving groove (19) is respectively provided with a second sealing ring (20), and the inner side wall of the second sealing ring (20) can be tightly abutted against the outer side wall of the valve core shaft (10) to achieve sealing between the valve core sleeve (7) and the valve core shaft (10).

8. The underwater hydraulic shuttle valve according to claim 7, characterized in that: A third step groove (21) is respectively provided at one end of the two valve core sleeves (7) away from each other, and the two third step grooves (21) are respectively communicated with the corresponding receiving grooves (19), and a clamping ring (22) is respectively provided in the two third step grooves (21), one side of the clamping ring (22) is tightly abutted against the corresponding liquid inlet valve cover (3), and the other side is tightly abutted against the corresponding second sealing ring (20).

9. The underwater hydraulic shuttle valve according to claim 1, characterized in that: A fourth step groove (23) is provided on the top of the shuttle valve seat (1), and the fourth step groove (23) is communicated with the liquid outlet hole (5). The bottom of the liquid outlet valve cover (4) is tightly inserted into the fourth step groove (23), and the liquid outlet valve cover (4) is connected to the shuttle valve seat (1) by a plurality of screws.

10. The underwater hydraulic shuttle valve according to claim 9, characterized in that: An annular sealing groove (24) is provided at the bottom of the fourth step groove (23), a third sealing ring (25) is provided in the sealing groove (24), and the third sealing ring (25) is in tight contact with the liquid outlet valve cover (4).

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