High-temperature-resistant isolation titanium alloy gate valve

Abstract

The utility model discloses a high-temperature-resistant isolation titanium alloy gate valve, which belongs to the technical field of gate valves and comprises a valve body, a valve cover movably connected with the upper surface of the valve body, connecting flanges communicated with two ends of the valve body, a valve plate movably connected with an inner cavity of the valve body, and a valve rod fixedly connected with the upper surface of the valve plate. A protective cover is fixedly connected to the upper surface of the valve cover, cooling fins are fixedly connected to the outer surface of the valve body, a cooling ring is fixedly connected to the outer surface of the protective cover, a metal sealing gasket is arranged in an inner cavity of the valve body, and rubber sealing gaskets are movably connected to the two sides of the metal sealing gasket. The contact area between the valve and surrounding air is increased, the process that heat energy is transmitted from the valve to the air is accelerated, heat accumulated on the valve can be reduced, accumulated damage of thermal stress to valve materials is reduced, and therefore the service life of the valve is prolonged, the maintenance and replacement frequency is reduced, and the operation cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of gate valves, and more specifically to a high-temperature resistant isolation titanium alloy gate valve. Background Art

[0002] Titanium alloy gate valve is a high-performance valve type, which is particularly suitable for application scenarios with strict requirements on corrosion resistance, high strength and light weight. Titanium alloy gate valve provides reliable fluid control solutions under harsh working conditions with its excellent corrosion resistance, high strength, light weight and good sealing performance. It is the first choice for many high-end application fields.

[0003] When the existing gate valve is in use, the driving device causes the valve stem to move upward, and the gate plate rises accordingly, separates from the valve seat, and the fluid channel is opened to allow the medium to flow. The driving device causes the valve stem to move downward, and the gate plate drops vertically along the center line until it fits tightly against the valve seat. The sealing surface of the gate plate and the sealing surface of the valve seat are highly smooth and flat, fit each other, and prevent the medium from flowing in the opposite direction.

[0004] In actual use of the prior art, since the medium in a high-temperature working environment often has the characteristics of high temperature and high pressure, the gate valve material is prone to damage and deformation when in contact with the high-temperature medium for a long time, which reduces the service life of the valve. Therefore, a high-temperature resistant isolation titanium alloy gate valve is proposed. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the problems existing in the prior art, the utility model provides a high-temperature resistant isolation titanium alloy gate valve, which increases the contact area with the surrounding air by arranging heat dissipation rings and heat sinks on the outer surfaces of the valve body and the protective cover, thereby accelerating the process of heat energy transfer from the valve to the air, helping to reduce the accumulated heat on the valve, and reducing the cumulative damage to the valve material caused by thermal stress, thereby extending the service life of the valve, reducing the frequency of maintenance and replacement, and reducing operating costs.

[0007] 2. Technical solution

[0008] To solve the above problems, the utility model adopts the following technical solutions.

[0009] A high-temperature resistant isolation titanium alloy gate valve comprises a valve body, the upper surface of the valve body is movably connected to a valve cover, two ends of the valve body are connected with connecting flanges, the inner cavity of the valve body is movably connected to a valve plate, the outer surface of the valve plate is fixedly connected to a valve stem, the upper surface of the valve cover is fixedly connected to a protective cover, the outer surface of the valve body is fixedly connected to a heat sink, the outer surface of the protective cover is fixedly connected to a heat dissipation ring, the inner cavity of the valve body is provided with a metal sealing gasket, and rubber sealing gaskets are movably connected to both sides of the metal sealing gasket.

[0010] Furthermore, the valve body and the valve cover are fixedly connected by bolts and nuts, and the valve body and the valve cover are made of high-temperature resistant titanium alloy.

[0011] Furthermore, the outer surfaces of the connecting flanges are provided with mounting holes, and the inner cavities of the valve body and the valve cover are provided with sliding grooves.

[0012] Furthermore, the valve plate moves in the slide groove, and the outer surface of the valve plate abuts against the metal sealing gasket and the rubber sealing gasket respectively.

[0013] Furthermore, a motor is fixedly connected to the top of the inner cavity of the protective cover, and a screw is fixedly connected to the output shaft end of the motor.

[0014] Furthermore, the inner cavity of the valve stem is provided with threads, and the inner cavity of the valve stem is threadably connected to the screw rod via the threads.

[0015] 3. Beneficial effects

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] (1) This solution increases the contact area between the valve body and the protective cover by setting heat dissipation rings and heat sinks, thereby accelerating the process of heat energy transfer from the valve to the air, helping to reduce the heat accumulated on the valve and the cumulative damage to the valve material caused by thermal stress, thereby extending the service life of the valve, reducing the frequency of maintenance and replacement, and reducing operating costs.

[0018] (2) This solution uses a motor to drive the screw to rotate and drive the valve stem to move upward, driving the valve plate to move upward in the slide slot, opening the channel to allow the medium to flow. Metal sealing gaskets and rubber sealing gaskets are respectively provided at the bottom of the inner cavity of the valve body. A combination of hard sealing and soft sealing is used to improve the reliability and durability of the seal when the valve plate is closed, ensuring good sealing even at high temperatures. The motor and screw are protected by a protective cover to prevent damage to the drive device in a high temperature environment, thereby ensuring normal operation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a half-section schematic diagram of the internal structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of the utility model in side section;

[0022] Figure 4 It is a schematic diagram of the local structure of the utility model.

[0023] Description of the numbers in the figure:

[0024] 1. Valve body; 2. Valve cover; 3. Connecting flange; 4. Mounting hole; 5. Bolt; 6. Nut; 7. Slide; 8. Valve plate; 9. Valve stem; 10. Screw; 11. Protective cover; 12. Motor; 13. Metal sealing gasket; 14. Rubber sealing gasket; 15. Heat dissipation ring; 16. Heat sink. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0026] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] Example 1

[0029] Reference Figure 1-4 , which is the first embodiment of the utility model, and this embodiment provides a high-temperature resistant isolation titanium alloy gate valve, including a valve body 1, a valve cover 2 is movably connected to the upper surface of the valve body 1, and connecting flanges 3 are connected at both ends of the valve body 1, a valve plate 8 is movably connected to the inner cavity of the valve body 1, a valve stem 9 is fixedly connected to the upper surface of the valve plate 8, a protective cover 11 is fixedly connected to the upper surface of the valve cover 2, a heat sink 16 is fixedly connected to the outer surface of the valve body 1, a heat dissipation ring 15 is fixedly connected to the outer surface of the protective cover 11, a metal sealing gasket 13 is arranged in the inner cavity of the valve body 1, and rubber sealing gaskets 14 are movably connected to both sides of the metal sealing gasket 13;

[0030] Specifically, the valve body 1 and the valve cover 2 are fixedly connected by bolts 5 and nuts 6. The valve body 1 and the valve cover 2 are made of high-temperature resistant titanium alloy. The outer surfaces of the connecting flanges 3 are provided with mounting holes 4. The inner cavities of the valve body 1 and the valve cover 2 are provided with slide grooves 7. The valve plate 8 moves in the slide grooves 7. The outer surfaces of the valve plate 8 are respectively in contact with the metal sealing gasket 13 and the rubber sealing gasket 14. The top of the inner cavity of the protective cover 11 is fixedly connected with a motor 12. The output shaft end of the motor 12 is fixedly connected with a screw 10. The inner cavity of the valve stem 9 is provided with threads. The inner cavity of the valve stem 9 is threadedly connected with the screw 10 through threads.

[0031] Furthermore, the valve body 1 is connected to the external pipeline through the connecting flange 3 and the mounting hole 4. The motor 12 drives the screw 10 to rotate and drive the valve stem 9 to move upward. When the valve stem 9 moves upward, it drives the valve plate 8 to move upward in the slide groove 7. The bottom of the inner cavity of the valve body 1 is respectively provided with a metal sealing gasket 13 and a rubber sealing gasket 14 to improve the sealing of the valve plate 8. The protective cover 11 protects the motor 12 and the screw 10. The outer surfaces of the valve body 1 and the protective cover 11 are respectively provided with a heat dissipation ring 15 and a heat dissipation fin 16 to increase the contact area with the surrounding air.

[0032] Working principle: During the use of the device, the operator connects the valve body 1 to the external pipeline through the connecting flange 3 and the mounting hole 4. When in use, the motor 12 is started to drive the screw 10 to rotate and drive the valve stem 9 to move upward. When the valve stem 9 moves upward, it drives the valve plate 8 to move upward in the slide groove 7. At this time, the channel in the valve body 1 is opened, allowing the medium to flow to meet the use requirements. The bottom of the inner cavity of the valve body 1 is respectively provided with a metal sealing gasket 13 and a rubber sealing gasket 14. The combination of hard sealing and soft sealing is adopted to improve the reliability and durability of the seal when the valve plate 8 is closed, ensuring that good sealing can be maintained even at high temperatures. The protective cover 11 protects the motor 12 and the screw 10 to prevent damage to the drive device in a high temperature environment and ensure the normal operation of the device. The outer surfaces of the valve body 1 and the protective cover 11 are respectively provided with a heat dissipation ring 15 and a heat sink 16, which increase the contact area with the surrounding air, accelerate the process of heat energy transfer from the valve to the air, help reduce the accumulated heat on the valve, reduce the cumulative damage of the valve material by thermal stress, thereby extending the service life of the valve, reducing the maintenance and replacement frequency, and reducing the operating cost.

[0033] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A high temperature resistant isolation titanium alloy gate valve, comprising a valve body (1), characterized in that: The upper surface of the valve body (1) is movably connected to a valve cover (2), both ends of the valve body (1) are connected to connecting flanges (3), the inner cavity of the valve body (1) is movably connected to a valve plate (8), the upper surface of the valve plate (8) is fixedly connected to a valve stem (9), the upper surface of the valve cover (2) is fixedly connected to a protective cover (11), the outer surface of the valve body (1) is fixedly connected to a heat sink (16), the outer surface of the protective cover (11) is fixedly connected to a heat dissipation ring (15), the inner cavity of the valve body (1) is provided with a metal sealing gasket (13), and rubber sealing gaskets (14) are movably connected to both sides of the metal sealing gasket (13).

2. A high temperature resistant isolation titanium alloy gate valve according to claim 1, characterized in that: The valve body (1) and the valve cover (2) are fixedly connected by bolts (5) and nuts (6); the valve body (1) and the valve cover (2) are made of high-temperature resistant titanium alloy.

3. A high temperature resistant isolation titanium alloy gate valve according to claim 1, characterized in that: The outer surface of the connecting flange (3) is provided with a mounting hole (4), and the inner cavity of the valve body (1) and the valve cover (2) is provided with a sliding groove (7).

4. A high temperature resistant isolation titanium alloy gate valve according to claim 3, characterized in that: The valve plate (8) moves in the slide groove (7), and the outer surface of the valve plate (8) abuts against the metal sealing gasket (13) and the rubber sealing gasket (14) respectively.

5. The high temperature resistant isolation titanium alloy gate valve according to claim 1, characterized in that: A motor (12) is fixedly connected to the top of the inner cavity of the protective cover (11), and a screw rod (10) is fixedly connected to the output shaft end of the motor (12).

6. A high temperature resistant isolation titanium alloy gate valve according to claim 5, characterized in that: The inner cavity of the valve stem (9) is provided with threads, and the inner cavity of the valve stem (9) is threadedly connected to the screw rod (10) via the threads.

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