Novel manual gate valve for underwater ROV (remote operated vehicle) operation

Abstract

The utility model discloses a novel underwater ROV (remote operated vehicle) operated manual gate valve which comprises a valve body, a valve cover arranged on the valve body, a bearing cover arranged on the valve cover, an ROV connector detachably connected to the bearing cover, a valve rod sleeve arranged in the bearing cover, a bearing arranged between the valve rod sleeve and the bearing cover, a valve rod arranged in the valve body, a screw rod arranged at the lower end of the valve rod, and a screw rod arranged at the lower end of the screw rod. The lower end of the valve rod is sleeved with a nut, a gate plate is fixedly connected to the nut, the upper end of the valve rod is fixedly connected with the valve rod sleeve through a pin, a valve seat is arranged in the valve body, the gate plate is sleeved with the valve seat, an annular supporting ring groove is formed in the outer end face of the valve seat, a supporting ring is arranged in the supporting ring groove, and the outer edge of the supporting ring makes contact with the valve body. A valve seat sealing ring is arranged on the lower end face of the valve seat, and the valve seat and the valve body are sealed through the valve seat sealing ring. The novel manual gate valve operated by the underwater ROV is reliable in sealing, small in torque and capable of preventing sand, and safety of oil and gas development is greatly guaranteed.

Description

Technical Field

[0001] The utility model relates to a novel manual gate valve operated by an underwater ROV, belonging to the technical field of valve body products used in underwater environments. Background Art

[0002] Subsea manual gate valve is a valve body product used in underwater systems such as underwater manifolds, underwater oil trees, and underwater water injection trees to pass or cut off fluids. Its switch forms include underwater robot ROV rotary override, ROV linear override, or diver operation.

[0003] Traditional underwater manual gate valves have unstable sealing performance, large torque, and poor sand prevention effect, which makes the valve easily stuck, affecting the safety of oil and gas development. Unlike on land, the maintenance cost and time consumption of underwater products are very huge. Therefore, underwater manual gate valves must have reliable sealing performance and a long service life. Utility Model Content

[0004] The utility model aims to provide a novel manual gate valve operated by an underwater ROV. The novel manual gate valve operated by an underwater ROV has reliable sealing, small torque, can prevent sand, and greatly ensures the safety of oil and gas development.

[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a new type of manual gate valve operated by underwater ROV, which includes a valve body, a valve cover is arranged on the valve body, a bearing cover is arranged on the valve cover, an ROV joint is detachably connected to the bearing cover, a valve stem sleeve is arranged in the bearing cover, a bearing is arranged between the valve stem sleeve and the bearing cover, a valve stem is arranged in the valve body, the lower end of the valve stem is a screw, a nut is sleeved on the lower end of the valve stem, a gate plate is fixedly connected to the nut, the upper end of the valve stem is fixedly connected to the valve stem sleeve through a pin, a valve seat is arranged in the valve body, the valve seat is sleeved on the gate plate, an annular support ring groove is arranged on the outer end surface of the valve seat, a support ring is arranged in the support ring groove, the outer edge of the support ring contacts the valve body, and a valve seat sealing ring is arranged on the lower end surface of the valve seat, and the valve seat sealing ring seals the valve seat and the valve body.

[0006] Preferably, the upper end of the valve stem sleeve extends into the ROV connector.

[0007] Preferably, a support plate is provided on the valve seat, and the support plate is attached to the outer side of the gate plate.

[0008] Preferably, an internal thread is provided on the upper inner wall of the valve cover, a sealing stuffing groove is provided between the valve cover and the valve stem, the sealing stuffing groove is filled with sealing stuffing, a stuffing gland is provided on the top of the sealing stuffing groove, the stuffing gland is sleeved on the valve stem, an external thread is provided on the outer wall of the stuffing gland, and the stuffing gland is threadedly connected to the valve cover.

[0009] Preferably, a disc spring is provided on the valve seat, and the outer end of the disc spring is supported on the valve body.

[0010] Preferably, the valve body and the valve cover are connected via a stud, and a compression nut is provided on the stud.

[0011] Preferably, a sealing steel ring is provided between the valve body and the valve cover.

[0012] The beneficial effects of the utility model are as follows: the manual gate valve operated by the novel underwater ROV of the utility model has reliable sealing, small torque, can prevent sand, is suitable for underwater environment, and greatly ensures the safety of oil and gas development. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0014] Figure 1 It is a schematic cross-sectional view of the structure of a novel underwater ROV-operated manual gate valve of the utility model;

[0015] Figure 2 It is a partial enlarged view of the structural schematic diagram of the novel underwater ROV-operated manual gate valve of the utility model. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] Embodiments of the utility model:

[0018] This utility model provides a new type of underwater ROV operated manual gate valve, please refer to Figure 1 and Figure 2, comprising a valve body 1, a valve cover 11 is arranged on the valve body 1, a bearing cover 18 is arranged on the valve cover 11, an ROV connector 19 is detachably connected to the bearing cover 18, a valve stem sleeve 17 is arranged in the bearing cover 18, a bearing 15 is arranged between the valve stem sleeve 17 and the bearing cover 18, a valve stem 9 is arranged in the valve body 1, the lower end of the valve stem 9 is a screw, a nut 8 is sleeved on the lower end of the valve stem 9, a gate plate 2 is fixedly connected to the nut 8, the upper end of the valve stem 9 is fixedly connected to the valve stem sleeve 17 through a pin 16, a valve seat 7 is arranged in the valve body 1, and the valve seat 7 is sleeved on the gate plate 2, An annular support ring groove 20 is arranged on the outer end face of the valve seat 7, and a support ring 6 is arranged in the support ring groove 20. The outer edge of the support ring 6 is in contact with the valve body 1, and the support ring 6 can be elastically compressed. When the gate plate 2 floats, the compression space of the support ring 6 can compensate for the gap space caused by the floating of the gate plate 2, thereby achieving a sand prevention effect. A valve seat sealing ring 5 is arranged on the lower end face of the valve seat 7, and the valve seat sealing ring 5 seals the valve seat 7 and the valve body 1. The use of the axial valve seat sealing ring 5 avoids the sealing instability phenomenon caused by the instability of the valve seat sealing gap due to the floating of the gate plate in the traditional underwater gate valve end face sealing.

[0019] Preferably, the upper end of the valve stem sleeve 17 extends into the ROV connector 19 to facilitate the operation of the ROV operating tool. Rotating the upper end of the valve stem sleeve 17 can cause the valve stem sleeve 17 to rotate together with the valve stem 9.

[0020] Preferably, a support plate 3 is provided on the valve seat 7 , and the support plate 3 is attached to the outer side of the gate plate 2 to strengthen the support of the valve seat 7 .

[0021] Preferably, an internal thread is provided on the upper inner wall of the valve cover 11, a sealing stuffing groove 21 is provided between the valve cover 11 and the valve stem 9, the sealing stuffing groove 21 is filled with a sealing stuffing 12 to increase the sealing of the valve stem 9, a stuffing gland 14 is provided on the top of the sealing stuffing groove 21, the stuffing gland 14 is sleeved on the valve stem 9, an external thread is provided on the outer wall of the stuffing gland 14, and the stuffing gland 14 is connected to the valve cover 11 through threads.

[0022] Preferably, a disc spring 4 is provided on the valve seat 7, and the outer end of the disc spring 4 is supported on the valve body 1. The disc spring 4 provides a certain sealing pressure ratio for the support ring 6 on the end face of the valve seat 7, so that the valve has a certain pressure pre-valve sealing effect, which greatly reduces the possibility of sediment, sand, ceramsite and other particles entering the valve body, reduces the generation of deposits in the valve body, and thus reduces the possibility of valve blocking.

[0023] Preferably, the valve body 1 and the valve cover 11 are connected via a stud 13, and a compression nut is provided on the stud 13. The stud 13 is properly screwed according to a prescribed torque to activate the sealing effect of the sealing steel ring 10.

[0024] When the new underwater ROV-operated manual gate valve of the utility model is used, the ROV operating tool cooperates with the ROV connector 19 and the valve stem sleeve 17, and the rotation operation of the ROV tool is started to drive the valve stem sleeve 17, the pin 16, and the valve stem 9 to rotate. Since the nut 8 and the valve stem 9 are threaded, the rotation of the valve stem 9 will drive the nut 8 and the gate plate 2 to move up and down, thereby realizing the opening and closing action of the valve. The ROV connector can be selected in various types according to needs.

[0025] The new underwater ROV-operated manual gate valve of the utility model firstly installs a support ring 6 on the end face of the valve seat 7. The support ring 6 can be elastically compressed. When the gate plate 2 floats underwater, the compressed space of the support ring 6 can compensate for the gap space caused by the floating of the gate plate 2, thereby playing a sand prevention effect and preventing sand from entering the interior of the valve body; secondly, the valve seat seal uses an axial valve seat sealing ring, which avoids the sealing instability phenomenon caused by the instability of the valve seat sealing gap caused by the floating of the gate plate in the traditional underwater gate valve end face seal; finally, the disc spring 4 cooperates with the valve seat 7 and the valve body 1 to provide a certain sealing pressure ratio for the support ring 6, so that the valve has a pre-valve sealing effect of a certain pressure, reduces the possibility of sediments, sand, ceramsite and other particles entering the valve body caused by the post-valve seal, reduces the generation of deposits in the valve body, thereby reducing the possibility of valve jamming, can increase the valve life, and ensure the safety of oil and gas development.

[0026] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A novel underwater ROV-operated manual gate valve, comprising a valve body, a valve cover is provided on the valve body, and is characterized in that: A bearing cover is provided on the valve cover, and an ROV joint is detachably connected to the bearing cover, a valve stem sleeve is provided in the bearing cover, a bearing is provided between the valve stem sleeve and the bearing cover, a valve stem is provided in the valve body, the lower end of the valve stem is a screw, a nut is provided at the lower end of the valve stem, a gate plate is fixedly connected to the nut, the upper end of the valve stem is fixedly connected to the valve stem sleeve through a pin, a valve seat is provided in the valve body, the valve seat is sleeved on the gate plate, an annular support ring groove is provided on the outer end surface of the valve seat, a support ring is provided in the support ring groove, an outer edge of the support ring contacts the valve body, a valve seat sealing ring is provided on the lower end surface of the valve seat, and the valve seat sealing ring seals the valve seat and the valve body.

2. The novel underwater ROV-operated manual gate valve according to claim 1 is characterized in that: The upper end of the valve stem sleeve extends into the ROV connector.

3. The novel underwater ROV-operated manual gate valve according to claim 2 is characterized in that: A support plate is arranged on the valve seat, and the support plate is attached to the outer side of the gate plate.

4. The novel underwater ROV-operated manual gate valve according to claim 3 is characterized in that: An internal thread is provided on the upper inner wall of the valve cover, a sealing stuffing groove is provided between the valve cover and the valve stem, the sealing stuffing groove is filled with sealing stuffing, a stuffing gland is provided on the top of the sealing stuffing groove, the stuffing gland is sleeved on the valve stem, an external thread is provided on the outer wall of the stuffing gland, and the stuffing gland is threadedly connected to the valve cover.

5. The novel underwater ROV-operated manual gate valve according to claim 4 is characterized in that: A disc spring is arranged on the valve seat, and the outer end of the disc spring is supported on the valve body.

6. The novel underwater ROV-operated manual gate valve according to claim 5 is characterized in that: The valve body and the valve cover are connected via studs, and a compression nut is arranged on the studs.

7. The novel underwater ROV-operated manual gate valve according to claim 6 is characterized in that: A sealing steel ring is arranged between the valve body and the valve cover.

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