A pipe ball valve

Abstract

The utility model belongs to valve technical field, specifically is a kind of pipeline ball valve, including valve body, valve cover, valve rod, valve core and the connecting flange being arranged at the inlet and outlet of valve body, valve core top and valve rod are connected and both coaxial, valve rod is connected with external handle after passing through valve cover, cooling cavity is also equipped in valve body, cooling cavity covers the area where valve rod and valve core are located, cooling liquid inlet and cooling liquid outlet that communicate with cooling cavity are set up on valve body, the pipe diameter of cooling liquid inlet is greater than cooling liquid outlet, and the setting position of cooling liquid inlet is higher than cooling liquid outlet, the side close to valve core and valve rod in cooling cavity is equipped with fin, the inlet and outlet of valve body are all equipped with sealing ring extending into cooling cavity, disc spring that can push sealing ring against valve core is also terminated between connecting flange and sealing ring, the utility model realizes the synergistic effect of cooling and sealing function, adapts high temperature and high pressure working condition, effectively improves the working condition adaptability and service life of pipeline ball valve.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology, specifically a pipeline ball valve. Background Technology

[0002] Ball valves are commonly used in industrial and civil applications. They are characterized by rapid opening and closing, low flow resistance, and reliable sealing. They are suitable for a wide range of media, including water, oil, gas, and various corrosive fluids. They are widely used in chemical, municipal, energy, and water supply and drainage applications. They are easy to operate and can adapt to different working conditions.

[0003] Existing ball valves are mainly composed of the following parts: valve body, ball, valve stem, etc. Their working principle is that rotating the valve stem drives the ball to rotate. When the through hole of the ball coincides with the pipeline axis, the medium can flow smoothly through the valve and the valve is opened; when the ball rotates and the through hole is perpendicular to the pipeline axis, the medium flow is blocked and the valve is closed.

[0004] Currently, existing ball valves have the following drawbacks: pipeline ball valves are often used in scenarios such as petrochemicals and energy transmission, which are often accompanied by high-temperature fluid media. The core components of the ball valve are exposed to high-temperature environments for a long time, which can easily lead to material aging and increased clearance, resulting in increased fluid leakage risk and difficulty in adapting to high-pressure conditions, thus limiting the overall service life. Therefore, a pipeline ball valve is proposed to address the above problems. Utility Model Content

[0005] To overcome the shortcomings of existing ball valves, a pipeline ball valve is proposed.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: The pipeline ball valve of this utility model includes a valve body, a valve cover, a valve stem, a valve core, and connecting flanges provided at the inlet and outlet of the valve body. The valve body is provided with a cooling chamber inside, the cooling chamber covering the valve stem and valve core area, and the valve body is provided with a coolant inlet and a coolant outlet communicating with the cooling chamber.

[0007] Preferably, a sealing ring is provided at the inlet and outlet of the valve body, one side of the sealing ring is in contact with the valve core, a boss is provided on the connecting flange opposite to the sealing ring, a groove is provided on the sealing ring to cooperate with the boss, a disc spring is connected between the connecting flange and the sealing ring to make the sealing ring abut against the valve core, and one end of the sealing ring extends into the cooling cavity.

[0008] Preferably, the diameter of the coolant inlet pipe is larger than that of the coolant outlet, and the coolant flow rate at the coolant inlet is greater than that at the coolant outlet, so that a certain hydraulic pressure is maintained in the cooling chamber.

[0009] Preferably, fins are provided in the cooling chamber on the side near the valve core and valve stem.

[0010] Preferably, the valve body has an installation cavity for assembling the valve stem and the valve core. The bottom end of the valve core is connected to the installation cavity via a rotating rod. The top end of the valve core is connected to the valve stem and is coaxial with it. The valve stem passes through the valve cover and is connected to an external handle.

[0011] Preferably, the coolant inlet is positioned higher than the coolant outlet.

[0012] The beneficial effects of this utility model are:

[0013] This utility model provides a pipeline ball valve. By setting a cooling chamber covering the valve stem and valve core areas within the valve body, and adopting a structural design where the inlet diameter of the coolant is larger than the outlet diameter and the inlet flow rate is larger than the outlet flow rate, the cooling chamber allows the coolant to absorb the heat generated by friction or high-temperature fluid in the valve stem and valve core, achieving precise cooling of the core components. On the other hand, it can form a stable hydraulic pressure within the cooling chamber, pushing the sealing ring to work in conjunction with the preload of the disc spring, enhancing the tightness of the seal between the sealing ring and the valve core. This adapts to high-pressure conditions and improves sealing reliability, achieving synergistic effects of cooling and sealing functions. It balances the heat dissipation requirements in high-temperature environments with the sealing performance in high-pressure scenarios, improving the adaptability and service life of the pipeline ball valve. Attached Figure Description

[0014] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0015] Figure 1 This is a cross-sectional view of the overall structure of this utility model;

[0016] Figure 2 yes Figure 1 Enlarged view of the structure at point A in the middle;

[0017] Legend:

[0018] 1. Valve body; 2. Valve cover; 3. Valve stem; 4. Valve core; 5. Connecting flange; 501. Boss; 6. Cooling chamber; 7. Coolant inlet; 8. Coolant outlet; 9. Sealing ring; 901. Groove; 10. Disc spring; 11. Fin; 12. Mounting cavity. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] Specific implementation examples are given below.

[0021] Please see Figures 1-2 The present invention discloses a pipeline ball valve, comprising a valve body 1, a valve cover 2, a valve stem 3, a valve core 4, and connecting flanges 5 located at the inlet and outlet of the valve body 1. The valve body 1 and the connecting flanges 5 are fixedly connected by fixing bolts, and a sealing element is provided on the contact surface between the two. The valve body 1 has an installation cavity 12 for assembling the valve stem 3 and the valve core 4. The bottom end of the valve core 4 is connected to the installation cavity 12 through a rotating rod. The top end of the valve core 4 is connected to the valve stem 3 and is coaxial. The valve core 4 has a channel for fluid to pass through. The valve stem 3 passes through the valve cover 2 and is connected to an external handle. The valve body 1 has a cooling cavity 6 inside, which covers the area of ​​the valve stem 3 and the valve core 4. The valve body 1 has a coolant inlet 7 and a coolant outlet 8 communicating with the cooling cavity 6.

[0022] A sealing ring 9, made of metal, is provided at the inlet and outlet of the valve body 1. One side of the sealing ring 9 is in contact with the valve core 4. A boss 501 is provided on the opposite side of the sealing ring 9 on the connecting flange 5. A groove 901 is provided on the sealing ring 9 to cooperate with the boss 501. A disc spring 10 is connected between the connecting flange 5 and the sealing ring 9 to make the sealing ring 9 abut against the valve core 4. One end of the sealing ring 9 extends into the cooling chamber 6. The diameter of the coolant inlet 7 is larger than that of the coolant outlet 8, and the flow rate of the coolant at the coolant inlet 7 is greater than that at the coolant outlet 8, so that a certain hydraulic pressure is maintained in the cooling chamber 6. When the pipeline ball valve is in use, the fluid from the external pipeline enters the valve body 1 through the connecting flange 5. The valve core 4 is rotated by rotating the valve stem 3 to control the flow of the fluid. At the same time, the cooling system operates synchronously. The coolant enters the cooling chamber 6 from the coolant inlet 7. Because the diameter of the coolant inlet 7 is larger than that of the coolant outlet 8 and the flow rate is greater than that at the coolant outlet 8, the cooling system operates synchronously. The coolant enters the cooling chamber 6 from the coolant inlet 7. With a larger volume, a stable hydraulic pressure is formed in the cooling chamber 6, allowing the coolant to fully fill and closely contact the valve body 1 area where the valve stem 3 and valve core 4 are located, absorbing the heat generated by friction or high fluid temperature. Under the preload of the disc spring 10, the sealing ring 9 adheres to the valve core 4. The boss 501 of the connecting flange 5 cooperates with the groove 901 of the sealing ring 9 to limit the sealing ring 9. At the same time, the hydraulic pressure in the cooling chamber 6 extends to the part of the cooling chamber 6 through the sealing ring 9, generating additional extrusion force on the valve core 4. The sealing ring 9 is pushed by the hydraulic pressure to generate a thrust towards the valve core 4. Together with the preload of the disc spring 10, the sealing ring 9 adheres tightly to the outer circumference of the valve core 4 and is finally discharged from the coolant outlet 8. The cooling chamber 6 not only reduces the temperature of the core components through liquid cooling, but also strengthens the tightness of the seal between the sealing ring 9 and the valve core 4 with the help of the hydraulic pressure in the chamber. The cooling chamber 6 achieves synergy between cooling and sealing, reducing the core temperature and converting the stable hydraulic pressure formed by the coolant flow difference into a sealing thrust, further improving the sealing performance.

[0023] Furthermore, fins 11 are provided on the side of the cooling chamber 6 near the valve core 4 and valve stem 3. During operation, when the coolant flows in the cooling chamber 6, the fins 11 increase the contact area with the coolant, allowing the coolant to quickly carry away heat and enhance heat dissipation.

[0024] Furthermore, the coolant inlet 7 is positioned higher than the coolant outlet 8. During operation, the coolant inlet 7 is positioned higher than the coolant outlet 8. Combined with the spatial layout of the cooling chamber 6, which includes the valve stem 3 and the valve core 4, the coolant enters from the high-position coolant inlet 7 and flows naturally downwards under gravity, fully filling the entire internal space of the cooling chamber 6. At the same time, the high-position inlet and low-position outlet layout forms a unidirectional flow path, ensuring that the coolant flows through the heat-generating area in an orderly manner, efficiently absorbs heat, and is stably discharged from the low-position coolant outlet 8, thereby achieving directional and continuous cooling of the core components.

[0025] In this utility model, the assembly method of valve body 1 and valve cover 2, the connection structure of valve stem 3 and external handle, the cooperation form of valve core 4 bottom rotating rod and mounting cavity 12, as well as the fixing bolts used to connect connecting flange 5 and valve body 1, and the sealing components of their contact surfaces, are all conventional technologies in the field. In addition, the specific type of coolant (such as cooling water, heat transfer oil), the specific shape and operation method of external handle, and the conventional transmission and cooperation parameters of rotating rod are all well known to those skilled in the art and are not the innovation of this utility model, so they will not be described in detail here.

[0026] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A pipeline ball valve, comprising a valve body (1), a valve cover (2), a valve stem (3), a valve core (4), and connecting flanges (5) located at the inlet and outlet of the valve body (1), characterized in that: The valve body (1) is provided with a cooling chamber (6) inside, the cooling chamber (6) covers the area of ​​valve stem (3) and valve core (4), and the valve body (1) is provided with a coolant inlet (7) and a coolant outlet (8) communicating with the cooling chamber (6). A sealing ring (9) is provided at the inlet and outlet of the valve body (1). One side of the sealing ring (9) is in contact with the valve core (4). A boss (501) is provided on the opposite side of the sealing ring (9) on the connecting flange (5). A groove (901) is provided on the sealing ring (9) to cooperate with the boss (501). A disc spring (10) is connected between the connecting flange (5) and the sealing ring (9) to make the sealing ring (9) abut against the valve core (4). One end of the sealing ring (9) extends into the cooling chamber (6).

2. A pipeline ball valve according to claim 1, characterized in that: The diameter of the coolant inlet (7) is larger than that of the coolant outlet (8), and the coolant flow rate of the coolant inlet (7) is greater than that of the coolant outlet (8), so that a certain hydraulic pressure is maintained in the cooling chamber (6).

3. A pipeline ball valve according to claim 1, characterized in that: The cooling chamber (6) is provided with fins (11) on the side near the valve core (4) and valve stem (3).

4. A pipeline ball valve according to claim 1, characterized in that: The valve body (1) has an installation cavity (12) for assembling the valve stem (3) and the valve core (4). The bottom end of the valve core (4) is connected to the installation cavity (12) through a rotating rod. The top end of the valve core (4) is connected to the valve stem (3) and is coaxial. The valve stem (3) passes through the valve cover (2) and is connected to the external handle.

5. A pipeline ball valve according to claim 1, characterized in that: The coolant inlet (7) is positioned higher than the coolant outlet (8).

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