Valve rod structure of oil exploitation stop valve

Abstract

The utility model relates to the technical field of stop valves, in particular to an oil exploitation stop valve rod structure which is characterized in that a limiting opening is formed in the upper surface of a valve rod handle, and a mounting opening is formed in the valve rod handle; the lower surface of the valve rod body is fixedly connected with an upper mounting plate, and a third notch is formed in the upper surface of the valve rod body; the device has the beneficial effects that the positioning rod is aligned with the hole of the positioning plate to be installed downwards, after the limiting plate slides till the installation opening is exposed, the rotating column can be moved downwards to a proper position along the installation opening, the limiting plate is clamped into the first notch to fix the rotating column, and if the rotating column is broken, the limiting plate only needs to slide out of the first notch, and the connecting rod is pulled to drive the bottom plate to move upwards, so that the rotating column is fixed. The broken part is moved away from the joint of the valve rod body and the valve rod handle, when the broken part reaches a proper position, the limiting plate is inserted into the first notch again, and the valve rod handle can be continuously rotated to drive the valve rod body to rotate, so that the situation that control over the gear valve plate is lost due to breakage of the rotating column is avoided, and accidents are prevented.

Description

Technical Field

[0001] The utility model relates to the field of stop valves, in particular to a valve stem structure of a stop valve for oil production. Background Art

[0002] Globe valves are usually used to cut off or regulate the flow of media to ensure safe operation. They are often used in process control systems such as oil pipelines and refining plants to accurately control the flow of petroleum products. Due to the particularity of the oil industry and the high requirements for safety performance, globe valves play a vital role in this field.

[0003] In the prior art, the valve stem is an indispensable component of the stop valve, but the existing valve body and valve stem are usually made of cast iron.

[0004] However, after long-term use, the valve stem on the stop valve may break. When this happens, it is difficult to continue to operate the valve stem with the existing valve, which may easily cause accidents due to untimely operation. Utility Model Content

[0005] The utility model aims to provide a valve stem structure of a petroleum production stop valve to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a valve stem structure of a petroleum extraction stop valve, the valve stem structure of the petroleum extraction stop valve comprising: a valve stem handle, a limit opening is provided on the upper surface of the valve stem handle, a mounting opening is provided on the valve stem handle, and a plurality of positioning rods are fixedly connected to the lower surface of the valve stem handle;

[0007] The valve stem body has an upper mounting plate fixedly connected to its lower surface, a third notch is provided on its upper surface, and a plurality of positioning plates are fixedly connected to the side surfaces of the valve stem body.

[0008] Preferably, the installation opening is a square plate-shaped structure, and the rotating column can pass through the installation opening and be inserted into the third notch on the valve stem body.

[0009] Preferably, the limit opening is a "convex"-shaped structure, and the limit opening can limit the limit slider from sliding in the limit opening, and the upper surface of the limit slider is fixedly connected to the limit plate.

[0010] Preferably, the upper mounting plate is in a cylindrical structure, the upper mounting plate is threadedly connected to the lower mounting plate by bolts, and the lower surface of the lower mounting plate is fixedly connected to the valve plate.

[0011] Preferably, the positioning plate is in a square plate-shaped structure, and a hole is provided on the upper surface of the positioning plate, and the positioning rod can be installed through the hole.

[0012] Preferably, the rotating column is in a square plate-like structure, a first slot is provided on the side of the rotating column, the first slot is in a square plate-like structure, the width of the first slot is equal to the width of the limiting plate, the limiting plate can be inserted into the first slot, and a second slot is provided on the upper surface of the rotating column that passes through the rotating column.

[0013] Preferably, the second notch is a cylindrical structure, the diameter of the second notch is equal to the connecting rod, the connecting rod can pass through the second notch and connect to the bottom plate, the upper end of the connecting rod is fixedly connected to the limit block, and the diameter of the limit block is larger than the diameter of the second notch.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model provides a valve stem structure for a petroleum production stop valve. The positioning rod is aligned with the hole of the positioning plate and installed downward to ensure that the installation port is correctly aligned with the third notch. The valve stem handle is installed on the valve stem body. In this way, the rotating column can easily pass through the installation port and be clamped into the third notch, thereby eliminating the installation problem of the rotating column caused by inaccurate alignment and realizing one-time assembly. The lower mounting plate and the upper mounting plate are threadedly connected by bolts, and the stop valve plate is fixed on the valve stem body. After the limit plate is slid until the installation port is exposed, the rotating column can be moved down to a proper position along the installation port, and the limit plate is clamped into the first notch to fix the rotating column. If the rotating column is broken, the limit plate only needs to be slid out of the first notch, and the bottom plate is driven to move up by pulling the connecting rod, so that the broken part is moved away from the joint of the valve stem body and the valve stem handle. When the limit plate is in a proper position, the first notch is reinserted, and the valve stem handle can be continuously rotated to drive the valve stem body to rotate, and the stop valve plate is controlled to move, thereby avoiding the loss of control of the stop valve plate due to the break of the rotating column and preventing accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 for Figure 1 The enlarged structural diagram at A in the middle;

[0018] Figure 3 It is a top view schematic diagram of the structure of the utility model;

[0019] Figure 4 It is a schematic diagram of the structural section of the utility model;

[0020] Figure 5 for Figure 4 The enlarged structural diagram at B in the middle;

[0021] Figure 6 It is a rear view schematic diagram of the structure of the utility model;

[0022] Figure 7 for Figure 6The enlarged structural diagram at C in the middle;

[0023] Figure 8 It is a schematic diagram of the local structure of the utility model.

[0024] In the figure: 1. valve stem handle; 2. valve stem body; 3. limit opening; 4. mounting opening; 5. positioning rod; 6. limit plate; 7. limit slider; 8. first notch; 9. rotating column; 10. second notch; 11. limit block; 12. connecting rod; 13. positioning plate; 14. hole; 15. bottom plate; 16. third notch; 17. upper mounting plate; 18. lower mounting plate; 19. valve plate. DETAILED DESCRIPTION

[0025] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Embodiment 1

[0027] See also Figure 1-Figure 8 The utility model provides a technical solution: a valve stem structure of a petroleum production stop valve, the valve stem structure of the petroleum production stop valve comprises: a valve stem handle 1, a limit opening 3 is provided on the upper surface of the valve stem handle 1, a mounting opening 4 is provided on the valve stem handle 1, and a plurality of positioning rods 5 are fixedly connected to the lower surface of the valve stem handle 1; a valve stem body 2, an upper mounting plate 17 is fixedly connected to the lower surface of the valve stem body 2, a third notch 16 is provided on the upper surface of the valve stem body 2, and a plurality of positioning plates 13 are fixedly connected to the side surface of the valve stem body 2;

[0028] During specific use, align the positioning rod 5 on the valve stem handle 1 with the hole 14 on the positioning plate 13 of the valve stem body 2 and install it downward, fix the valve stem handle 1 on the valve stem body 2, connect the lower mounting plate 18 and the upper mounting plate 17 by bolt threads, fix the valve plate 19 on the valve stem body 2, slide the limit plate 6 to expose the mounting port 4, and finally install the rotating column 9 downward along the mounting port 4. When it reaches the appropriate position, use the limit plate 6 to clamp it into the first slot 8.

[0029] Embodiment 2

[0030] On the basis of the first embodiment, a positioning plate 13 is provided for the convenience of device installation. The positioning plate 13 is a square plate structure. A hole 14 is provided on the upper surface of the positioning plate 13. The positioning rod 5 can be installed through the hole 14.

[0031] During specific use, the positioning rod 5 on the valve stem handle 1 is aligned with the hole 14 on the positioning plate 13 of the valve stem body 2 and installed downwardly. At this time, the installation port 4 and the third slot 16 just correspond to each other, and the rotating column 9 can directly pass through the installation port 4 and be inserted into the third slot 16, thereby avoiding the failure of the installation of the rotating column 9 due to the mismatch between the installation port 4 and the third slot 16, and the rotating column 9 can be installed without multiple adjustments.

[0032] Embodiment 3

[0033] On the basis of the second embodiment, in order to prevent accidents caused by the failure to control the valve stem body 2 due to the breakage of the rotating column 9, a mounting port 4 is provided, the mounting port 4 is a square plate-shaped structure, the rotating column 9 can pass through the mounting port 4 and be inserted into the third notch 16 on the valve stem body 2, the limiting port 3 is a "convex"-shaped structure, the limiting port 3 can limit the sliding of the limiting slider 7 in the limiting port 3, the upper surface of the limiting slider 7 is fixedly connected to the limiting plate 6, the rotating column 9 is a square plate-shaped structure, a plurality of first notches 8 are provided on the side of the rotating column 9, the first notch 8 is a square plate-shaped structure, the width of the first notch 8 is equal to the width of the limiting plate 6, the limiting plate 6 can be inserted into the first notch 8, the upper surface of the rotating column 9 is provided with a second notch 10 that passes through the rotating column 9, the second notch 10 is a cylindrical structure, the diameter of the second notch 10 is equal to that of the connecting rod 12, the connecting rod 12 can pass through the second notch 10 and be connected to the bottom plate 15, the upper end of the connecting rod 12 is fixedly connected to the limiting block 11, and the diameter of the limiting block 11 is greater than the diameter of the second notch 10;

[0034] During specific use, the lower mounting plate 18 and the upper mounting plate 17 are connected by bolt threads, the valve plate 19 is fixed on the valve stem body 2, the sliding limit plate 6 exposes the mounting port 4, and finally the rotating column 9 is installed downward along the mounting port 4. When it reaches the appropriate position, the limit plate 6 is used to be inserted into the first slot 8. If the rotating column 9 is broken, the limit plate 6 is slid out of the first slot 8, and the connecting rod 12 is pulled to drive the bottom plate 15 to move the rotating column 9 upward, so that the broken part leaves the joint between the valve stem body 2 and the valve stem handle 1, and finally the sliding limit plate 6 is inserted into the first slot 8, and the valve stem handle 1 can continue to be rotated to drive the valve stem body 2 to rotate, thereby controlling the valve plate 19, thereby avoiding accidents caused by the breakage of the rotating column 9 and the inability to control the valve plate 19.

[0035] In actual use, the positioning rod 5 is aligned with the hole 14 of the positioning plate 13 and installed downward to ensure that the installation port 4 is correctly aligned with the third notch 16, and the valve stem handle 1 is installed on the valve stem body 2. In this way, the rotating column 9 can easily pass through the installation port 4 and be stuck into the third notch 16, eliminating the installation problem of the rotating column 9 caused by inaccurate alignment, and realizing one-time assembly. The lower mounting plate 18 and the upper mounting plate 17 are then threadedly connected by bolts, and the valve plate 19 is fixed to the valve stem body 2. After the sliding limit plate 6 is exposed until the installation port 4 is exposed, the rotating column 9 can be moved along the installation port 4. The installation port 4 is moved down to an appropriate position, and the limit plate 6 is used to be inserted into the first slot 8 to fix the rotating column 9. If the rotating column 9 is broken, it is only necessary to slide the limit plate 6 out of the first slot 8, and drive the bottom plate 15 to move up by pulling the connecting rod 12 to move the broken part away from the joint between the valve stem body 2 and the valve stem handle 1. When it reaches a suitable position, the limit plate 6 is reinserted into the first slot 8, and the valve stem handle 1 can be continued to be rotated to drive the valve stem body 2 to rotate, control the movement of the valve plate 19, thereby avoiding losing control of the valve plate 19 due to the breakage of the rotating column 9 and preventing accidents.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A valve stem structure for a petroleum production stop valve, characterized in that: The valve stem structure of the oil production stop valve comprises: a valve stem handle (1), a limit opening (3) is provided on the upper surface of the valve stem handle (1), a mounting opening (4) is provided on the valve stem handle (1), and a plurality of positioning rods (5) are fixedly connected to the lower surface of the valve stem handle (1); A valve stem body (2), wherein an upper mounting plate (17) is fixedly connected to the lower surface of the valve stem body (2), a third notch (16) is provided on the upper surface of the valve stem body (2), and a plurality of positioning plates (13) are fixedly connected to the side surface of the valve stem body (2); The installation opening (4) is in the form of a square plate, and the rotating column (9) can pass through the installation opening (4) and be inserted into the third notch (16) on the valve stem body (2).

2. The valve stem structure of a petroleum production stop valve according to claim 1, characterized in that: The limiting opening (3) is in a "convex"-shaped structure, and the limiting opening (3) can limit the limiting slider (7) from sliding in the limiting opening (3), and the upper surface of the limiting slider (7) is fixedly connected to the limiting plate (6).

3. The valve stem structure of a petroleum production stop valve according to claim 1, characterized in that: The upper mounting plate (17) is of cylindrical structure, the upper mounting plate (17) is threadedly connected to the lower mounting plate (18) via bolts, and the lower surface of the lower mounting plate (18) is fixedly connected to the stop valve plate (19).

4. The valve stem structure of a petroleum production stop valve according to claim 1, characterized in that: The positioning plate (13) is in a square plate-shaped structure. A hole (14) is provided on the upper surface of the positioning plate (13). The positioning rod (5) can be installed through the hole (14).

5. The valve stem structure of a petroleum production stop valve according to claim 1, characterized in that: The rotating column (9) is in the form of a square plate. A plurality of first notches (8) are provided on the side of the rotating column (9). The first notches (8) are in the form of a square plate. The width of the first notches (8) is equal to the width of the limiting plate (6). The limiting plate (6) can be inserted into the first notches (8). A second notch (10) penetrating the rotating column (9) is provided on the upper surface of the rotating column (9).

6. The valve stem structure of a petroleum production stop valve according to claim 5, characterized in that: The second notch (10) is in a cylindrical structure. The diameter of the second notch (10) is equal to that of the connecting rod (12). The connecting rod (12) can pass through the second notch (10) and be connected to the bottom plate (15). The upper end of the connecting rod (12) is fixedly connected to the limit block (11). The diameter of the limit block (11) is greater than the diameter of the second notch (10).

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