Power station drain ball valve

Abstract

The utility model discloses a power station drain ball valve which comprises a valve body and a valve rod located in the valve body, one end of the valve rod is connected with a ball body, the valve body is provided with a first connecting plate and a second connecting plate which are located on the two sides of the ball body, and the side, away from the ball body, of the first connecting plate is provided with a guide plate. A first bevel angle is arranged on the side, away from the first connecting plate, of the guide plate, a sealing ring is arranged between the first connecting plate and the guide plate, the side, away from the ball body, of the second connecting plate is arranged to be circular, second bevel angles are arranged on the outer sides of the two ends of the valve body, and an extending part is welded to one end of the valve body. The water pipe connector has the advantage of being convenient to connect water pipes.

Description

Technical Field

[0001] The utility model relates to the field of ball valves, in particular to a power station drain ball valve. Background Art

[0002] In the process of production and life, valves are widely used as pipeline accessories for opening and closing pipelines, controlling flow directions, regulating and controlling parameters of transported media. Ball valves have extensive applications in industries such as food, chemical industry, petroleum, and electric power. During the power generation process of power stations, it is necessary to control the opening and closing of water to adjust the flow rate of water. Therefore, ball valves are also used in the process of hydropower generation.

[0003] Currently, in the process of hydropower generation, in order to ensure the stability and opening and closing of the pipeline water volume, drain ball valves are required to cut off or connect pipeline media. However, most of the existing drain ball valves are difficult to assemble and connect to water pipes, resulting in excessive time consumption during assembly and reducing work efficiency. Therefore, it is necessary to improve the drain ball valve. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a power station drain ball valve to solve the problems put forward in the above background art, which has the advantage of being convenient for connecting water pipes.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A power station drain ball valve includes a valve body and a valve stem located inside the valve body. One end of the valve stem is connected to a sphere. The valve body is provided with a first connecting plate and a second connecting plate on both sides of the sphere. A guiding plate is arranged on the side of the first connecting plate facing away from the sphere. A first bevel angle is arranged on the side of the guiding plate facing away from the first connecting plate. A sealing ring is arranged between the first connecting plate and the guiding plate. The side of the second connecting plate facing away from the sphere is circular. Second bevel angles are arranged on the outer sides of both ends of the valve body. An extension part is welded to one end of the valve body.

[0006] By adopting the above technical solution, the first connecting plate and the second connecting plate are installed on both sides of the sphere, and a guiding plate is added. The guiding plate is provided with a first bevel angle to facilitate the inflow of water into the first connecting plate. The setting of the sealing ring increases the sealing performance between the two. The setting of the second bevel angle is convenient for sleeving water pipes, and the setting of the extension part is convenient for sleeving water pipes.

[0007] As a further solution of the utility model: The valve seat is provided with a packing body around the circumference of the valve stem. A packing gland is arranged above the packing body. The packing gland is connected with a screw and a nut. A gasket is arranged between the nut and the packing gland.

[0008] By adopting the above technical solution, the packing body and the packing gland are inside the valve body, and the valve body can play a role in shielding.

[0009] Preferably, the valve seat is provided with a bearing sleeved on the circumference of the valve stem.

[0010] Preferably, a connecting rod is connected above the valve stem, an actuator is arranged above the connecting rod, and a fixing frame is arranged between the actuator and the valve seat.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The first connecting plate and the second connecting plate are installed on both sides of the sphere, and a guide plate is added. The guide plate is provided with a first bevel to facilitate the flow of water into the first connecting plate. The sealing ring is provided to increase the sealing between the two. The second bevel is provided to facilitate the connection of the water pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of an embodiment.

[0014] In the figure: 1. valve body; 2. second connecting plate; 3. ball; 4. first connecting plate; 5. sealing ring; 6. guide plate; 7. first bevel; 8. extension; 9. packing body; 10. screw; 11. packing cover; 12. gasket; 13. nut; 14. valve stem; 15. bearing; 16. connecting rod; 17. fixing frame; 18. actuator; 19. bolt. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the utility model are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on 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.

[0016] In the embodiment of the utility model,

[0017] A power station drain ball valve, such as Figure 1 As shown, it includes a valve body 1 and a valve stem 14 in the valve body 1, one end of the valve stem 14 is connected to a sphere 3, the valve body 1 is provided with a first connecting plate 4 and a second connecting plate 2 on both sides of the sphere 3, a guide plate 6 is provided on the side of the first connecting plate 4 facing away from the sphere 3, a first bevel 7 is provided on the side of the guide plate 6 facing away from the first connecting plate 4, a sealing ring 5 is provided between the first connecting plate 4 and the guide plate 6, the side of the second connecting plate 2 facing away from the sphere 3 is set to a circular shape, the outer sides of both ends of the valve body 1 are provided with second bevels, and an extension portion 8 is welded to one end of the valve body 1.

[0018] The valve seat is provided with a packing body 9 circumferentially around the valve stem 14. Above the packing body 9, there is a packing gland 11. The packing gland 11 is connected with a screw rod 10 and a nut 13, and a gasket 12 is arranged between the nut 13 and the packing gland 11.

[0019] The valve seat is provided with a bearing 15 sleeved circumferentially around the valve stem 14.

[0020] Above the valve stem 14, there is a connecting rod 16 connected. Above the connecting rod 16, there is an actuator 18. Between the actuator 18 and the valve seat, there is a fixing frame 17. The fixing frame 17 is connected to the valve seat by bolts 19.

[0021] The internal parts of the ball valve and the valve seat fittings are all machined and manufactured by a CNC machining center, with high precision and good sealing. All valve stems adopt a design to prevent flying out and are quenched and tempered + nitrided with precipitation-hardening stainless steel. The packing uses high-quality imported high-temperature packing. The balls are all supersonically sprayed after heat treatment, and are tested for hardness and wear resistance according to different working conditions of customers. The structural design is in accordance with API 607 and API 6FA fireproof designs. The bolts and nuts are quenched and tempered. The valve seat and the ball are sprayed: using Praxair spraying equipment in the United States, which is also the most advanced supersonic spraying equipment currently. The valve seat spring uses Inconel X750. The sealing surfaces of the valve seat and the ball adopt high-quality imported special alloys, which are special alloys that can resist wear, corrosion, and high-temperature oxidation. The paint adopts the American standard valve export standard, and American standard epoxy resin antirust paint (primer + intermediate paint + topcoat) is sprayed.

[0022] Working principle:

[0023] The first connecting plate 4 and the second connecting plate 2 are installed on both sides of the ball 3, and a guiding plate 6 is added. The guiding plate 6 is provided with a first bevel 7 to facilitate the flow of water into the first connecting plate 4. The setting of the sealing ring 5 increases the sealing performance between the two. The setting of the second bevel is convenient for sleeving the water pipe.

[0024] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A power station drain globe valve, comprising a valve body (1) and a valve stem (14) located within the valve body (1), characterized in that: One end of the valve stem (14) is connected to a sphere (3). The valve body (1) is provided with a first connecting plate (4) and a second connecting plate (2) on both sides of the sphere (3). A guiding plate (6) is provided on the side of the first connecting plate (4) facing away from the sphere (3). A first bevel angle (7) is provided on the side of the guiding plate (6) facing away from the first connecting plate (4). A sealing ring (5) is provided between the first connecting plate (4) and the guiding plate (6). The side of the second connecting plate (2) facing away from the sphere (3) is circular. Second bevel angles are provided on the outer sides of both ends of the valve body (1). An extension part (8) is welded to one end of the valve body (1).

2. The drain ball valve for power station according to claim 1, wherein: The valve seat is provided with a packing body (9) around the circumference of the valve stem (14). A packing gland (11) is provided above the packing body (9). The packing gland (11) is connected with a screw rod (10) and a nut (13). A gasket (12) is provided between the nut (13) and the packing gland (11).

3. The drain ball valve for power station according to claim 2, characterized in that: The valve seat is provided with a bearing (15) sleeved around the circumference of the valve stem (14).

4. A steam trap ball valve for a power station according to claim 1, characterized in that: A connecting rod (16) is connected above the valve stem (14). An actuator (18) is provided above the connecting rod (16). A fixing frame (17) is provided between the actuator (18) and the valve seat.

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