High-temperature medium ball valve with good heat insulation performance

Abstract

The high-temperature medium ball valve with the good heat insulation performance comprises a valve body, a ball body is arranged in the valve body, a rotating rod is arranged at the top of the valve body, flanges are communicated with the two ends of the valve body, the high-temperature medium ball valve with the good heat insulation performance further comprises a heat insulation structure, and the heat insulation structure is installed in the valve body. The sealing device is installed on the top of the valve body. The utility model relates to the technical field of ball valves, through the cooperation of the ceramic inner layer, the filling agent and the injection hole, the filling agent is injected into the cavity between the valve body and the ceramic inner layer through the injection hole at the bottom of the valve body, so that the cavity is fully filled with the filling agent, and after solidification, the filling agent can reduce heat transferred to the outer wall of the valve body, so that the sealing performance of the valve body is improved. In this way, the temperature of the valve body cannot be too high, and cracks on the surface of the valve body caused by too high temperature are avoided.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, specifically a high-temperature medium ball valve with good heat insulation performance. Background Technology

[0002] A ball valve is a valve driven by a valve stem that rotates around the ball valve axis. It can also be used for fluid regulation and control. In pipelines, ball valves can not only flexibly control the merging, splitting, and switching of the flow direction of the medium, but also close any channel while connecting the other two channels. Ball valves are widely used in industries such as petroleum refining, long-distance pipelines, chemical industry, papermaking, pharmaceutical industry, water conservancy, power, municipal engineering, and steel.

[0003] In existing technology, a ball valve is installed inside the casting, and a through hole is made on the outer wall of the ball valve so that when it is rotated to the other side, water flows out through the through hole, which can improve the sealing effect of the valve body.

[0004] However, in actual use, when using the valve body to control high-temperature media, since the main body of the valve body is cast from molten iron, excessively high temperatures will cause the valve body itself to overheat, resulting in cracks on the surface of the valve body. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a high-temperature medium ball valve with good heat insulation performance. This solves the problem that when using the valve body to control high-temperature media in actual use, the valve body, being cast from molten iron, will become too hot due to excessive temperature, causing cracks to appear on the surface of the valve body.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-temperature medium ball valve with good thermal insulation performance, comprising a valve body, a ball disposed inside the valve body, a rotating rod disposed at the top of the valve body, and flanges connected to both ends of the valve body. The high-temperature medium ball valve with good thermal insulation performance also includes a thermal insulation structure installed inside the valve body; a sealing device installed at the top of the valve body; and a heat dissipation structure installed on the outer wall of the valve body. The thermal insulation structure prevents the valve body from overheating, the sealing device seals the valve body, and the heat dissipation structure accelerates heat dissipation from the valve body.

[0007] Preferably, the heat insulation structure includes a ceramic inner layer, which is inserted into the inner wall of the valve body and adheres to the outer wall of the ball; a filler is filled between the ceramic inner layer and the valve body; an injection hole is opened at the bottom of the valve body; and a fixing structure is installed between the ceramic inner layer and the valve body. The combination of the ceramic inner layer and the filler improves the heat insulation effect of the valve body. The filler is injected into the cavity through the injection hole, and the fixing structure fixes the ceramic inner layer to the valve body.

[0008] Preferably, the fixing structure includes a stainless steel bolt, which is threaded to the inner wall of the valve body and inserted into the surface of the ceramic inner layer; a retaining block is fixedly connected to the outer wall of the ceramic inner layer and embedded in the inner wall of the filler 22; wherein, the ceramic inner layer is fixed inside the valve body by the cooperation of the stainless steel bolt and the retaining block.

[0009] Preferably, the sealing device includes a ceramic rod, which is fixedly connected to the top of the ball and passes through the inner layer of the ceramic through a sealing bearing, extending to the outside of the valve body; a fixing plate is fixedly connected to the top of the valve body and sleeved on the outer wall of the ceramic rod; a graphite ring is fixedly connected to the inner wall of the fixing plate, and the inner wall is in contact with the outer wall of the ceramic rod; a sealing plate is pressed against the top of the graphite ring and sleeved on the outer wall of the ceramic rod, and the bottom is fixedly connected to the top of the fixing plate; a connecting device is installed on the top of the ceramic rod; wherein, the ceramic rod and the sealing plate are sealed by the cooperation of the graphite ring and the fixing plate, and the connecting device connects the ceramic rod and the rotating rod together.

[0010] Preferably, the connecting device includes a fixed shell, which is fixedly connected to the top of the fixed plate and rotatably connected to the outer wall of the rotating rod via a sealed bearing; a rhombus block is fixedly connected to the bottom of the rotating rod and inserted into the top of the ceramic rod; wherein, the rotating rod is connected to the top of the ceramic rod through the cooperation of the fixed shell and the rhombus block.

[0011] Preferably, the heat dissipation structure includes heat dissipation fins, and several heat dissipation fins are provided, all of which are fixedly connected to the outer wall of the valve body; the heat dissipation cover is sleeved on the outer wall of the flange; wherein, the cooperation between the heat dissipation fins and the heat dissipation cover makes the heat dissipation effect of the valve body better.

[0012] Beneficial effects

[0013] This invention provides a high-temperature medium ball valve with good thermal insulation performance. It offers the following advantages: Through the combination of a ceramic inner layer, filler, and injection hole, the filler is injected into the cavity between the valve body and the ceramic inner layer via the injection hole at the bottom of the valve body. This ensures the filler completely fills the cavity, and after solidification, the filler reduces heat transfer to the outer wall of the valve body. This prevents the valve body itself from overheating and avoids cracks on the valve body surface caused by excessive temperature.

[0014] By using a ceramic rod, a fixing plate, and a graphite ring, the ceramic rod drives the ball to rotate, and graphene is used to fit around the outer wall of the ceramic rod. After installation, the fixing plate is used to press the graphite ring. This pressing during installation makes the ceramic rod and valve body more tightly connected, preventing leakage. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 3 for Figure 1 A schematic diagram of the structure of the inner ceramic layer, valve body, and heat dissipation fins;

[0018] Figure 4 for Figure 1 A schematic diagram of the structure of the fixed shell, sphere, and fixed plate.

[0019] In the diagram: 1. Valve body; 11. Ball; 12. Flange; 13. Rotating rod; 2. Thermal insulation structure; 21. Ceramic inner layer; 22. Filler; 23. Injection hole; 24. Fixing structure; 241. Stainless steel bolt; 242. Clamping block; 3. Sealing device; 31. Ceramic rod; 32. Fixing plate; 33. Graphite ring; 34. Sealing plate; 35. Connecting device; 351. Fixing shell; 352. Diamond block; 4. Heat dissipation structure; 41. Heat dissipation fins; 42. Heat dissipation cover. Detailed Implementation

[0020] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In actual use, when using the valve body to control high-temperature media, because the main body of the valve body is cast from molten iron, excessively high temperatures will cause the valve body itself to overheat, resulting in cracks on the surface of the valve body.

[0022] In view of this, the present invention provides a high-temperature medium ball valve with good heat insulation performance, which solves the problem that when the valve body is used to control high-temperature media in actual use, the valve body is made of molten iron and the excessive temperature will cause the valve body to overheat, resulting in cracks on the surface of the valve body.

[0023] Those skilled in the art can connect the components in this case sequentially. The specific connection and operation sequence should refer to the working principle described below. The detailed connection methods are well-known technologies in the field. The working principle and process are mainly described below.

[0024] Example 1: By Figure 1-4It is known that a high-temperature medium ball valve with good heat insulation performance includes a valve body 1, a ball 11 disposed inside the valve body 1, a rotating rod 13 disposed on the top of the valve body 1, and flanges 12 connected to both ends of the valve body 1. The high-temperature medium ball valve with good heat insulation performance also includes a heat insulation structure 2, a sealing device 3, and a heat dissipation structure 4. The heat insulation structure 2 is installed inside the valve body 1; the sealing device 3 is installed on the top of the valve body 1; and the heat dissipation structure 4 is installed on the outer wall of the valve body 1. The heat insulation structure 2 prevents the temperature of the valve body 1 from becoming too high, the sealing device 3 seals the valve body 1, and the heat dissipation structure 4 accelerates the heat dissipation of the valve body 1.

[0025] In the specific implementation process, it is worth noting that a through hole is provided inside the ball 11. By rotating the ball 11, the through hole inside the ball 11 is connected to the valve body 1. The rotating rod 13 drives the ball 11 to rotate, and the heat insulation structure 2 prevents the temperature of the valve body 1 from rising. The sealing device 3 can seal the rotating rod 13 between the valve body 1 and the heat dissipation structure 4 to reduce the temperature of the valve body 1. In addition, the sealing bearing selected in this paper is a GT series high temperature alloy steel sealing bearing with a working temperature of 800-1000 degrees Celsius. The ball 11 is made of stainless steel or ceramic material, and the valve body 1 is made of high temperature alloy, such as cobalt-based high temperature alloy.

[0026] Furthermore, the heat insulation structure 2 includes a ceramic inner layer 21, a filler 22, an injection hole 23, and a fixing structure 24. The ceramic inner layer 21 is inserted into the inner wall of the valve body 1 and adheres to the outer wall of the ball 11. The filler 22 fills the space between the ceramic inner layer 21 and the valve body 1. The injection hole 23 is located below the valve body 1. The fixing structure 24 is installed between the ceramic inner layer 21 and the valve body 1. The combination of the ceramic inner layer 21 and the filler 22 improves the heat insulation effect of the valve body 1. The filler 22 is injected into the cavity through the injection hole 23, and the fixing structure 24 fixes the ceramic inner layer 21 inside the valve body 1.

[0027] In the specific implementation process, it is worth noting that the heat resistance of the ceramic inner layer 21 is used to protect the valve body 1, and the filler 22 is made of nano-aerogel material. After being injected into the cavity through the injection hole 23, the filler 22 will solidify quickly, thereby providing heat insulation. When installing the ceramic inner layer 21, it is fixed by the fixing structure 24. The inner wall of the ceramic inner layer 21 is coated with a silicon nitride ceramic sealing layer to ensure the sealing between the ball 11 and the ceramic inner layer 21.

[0028] Furthermore, the fixing structure 24 includes a stainless steel bolt 241 and a locking block 242. The stainless steel bolt 241 is threaded to the inner wall of the valve body 1 and inserted into the surface of the ceramic inner layer 21. The locking block 242 is fixedly connected to the outer wall of the ceramic inner layer 21 and embedded in the inner wall of the filler 22. The ceramic inner layer 21 is fixed inside the valve body 1 by the cooperation of the stainless steel bolt 241 and the locking block 242.

[0029] In the specific implementation process, it is worth noting that by taking advantage of the fast heat dissipation of stainless steel, the heat dissipation speed of stainless steel bolt 241 is increased, and when installing ceramic inner layer 21, the locking block 242 will be locked on the inner wall of valve body 1, so that ceramic inner layer 21 can be stabilized during installation.

[0030] Specifically, when using this high-temperature medium ball valve with good thermal insulation performance, the ceramic inner layer 21 is fitted onto the outer wall of the ball 11. After installation, the ceramic inner layer 21 is inserted into the valve body 1. During the installation of the ceramic inner layer 21, the retaining block 242 is secured inside the valve body 1, and the stainless steel bolt 241 is inserted between the valve body 1 and the ceramic inner layer 21 to fix the ceramic inner layer 21 inside the valve body 1. After the ceramic inner layer 21 is installed, the filler 22 is injected into the cavity between the valve body 1 and the ceramic inner layer 21 through the injection hole 23. This ensures that when the ball valve passes through the hot medium, the heat is blocked by the ceramic inner layer 21 and the filler 22, preventing the temperature of the valve body 1 from becoming too high.

[0031] Example 2: From Figure 1-4 It is known that the sealing device 3 includes a ceramic rod 31, a fixing plate 32, a graphite ring 33, a sealing plate 34, and a connecting device 35. The ceramic rod 31 is fixedly connected to the top of the ball 11 and passes through the inner ceramic layer 21 through a sealing bearing, extending to the outside of the valve body 1. The fixing plate 32 is fixedly connected to the top of the valve body 1 and is sleeved on the outer wall of the ceramic rod 31. The graphite ring 33 is fixedly connected to the inner wall of the fixing plate 32, and the inner wall is in contact with the inner wall of the ceramic rod 31. The sealing plate 34 is pressed against the top of the graphite ring 33 and sleeved on the outer wall of the ceramic rod 31, and the bottom is fixedly connected to the top of the fixing plate 32. The connecting device 35 is installed on the top of the ceramic rod 31, and the ceramic rod 31 can rotate inside the sealing plate 34, that is, the two are movably connected. The ceramic rod 31 and the sealing plate 34 are sealed by the cooperation of the graphite ring 33 and the fixing plate 32, and the connecting device 35 connects the ceramic rod 31 and the rotating rod 13 together. The ceramic rod 31 passes through the valve body 1 and is movably connected to the valve body 1. During the drying process of the filler 22, the ceramic rod 31 rotates repeatedly to create a gap between the dried filler 22 and the ceramic rod 31, so as to avoid the filler 22 affecting the rotation of the ceramic rod 31.

[0032] In the specific implementation process, it is worth noting that by using the ceramic rod 31 to drive the ball 11 to rotate, and using the graphite ring 33 to fit on the outer wall of the ceramic rod 31, after installation, the fixing plate 32 is used to squeeze the graphite ring 33. This squeezing during the installation of the graphite ring 33 makes the ceramic rod 31 and the valve body 1 more tightly connected, avoiding leakage. The high temperature resistance of graphene itself is used to prevent leakage between the valve body 1 and the ceramic rod 31.

[0033] Furthermore, the connecting device 35 includes a fixed shell 351 and a rhombus-shaped block 352. The fixed shell 351 is fixedly connected to the top of the fixed plate 32 and rotatably connected to the outer wall of the rotating rod 13 through a sealed bearing. The rhombus-shaped block 352 is fixedly connected to the bottom of the rotating rod 13 and inserted into the top of the ceramic rod 31. The rotating rod 13 is connected to the top of the ceramic rod 31 through the cooperation of the fixed shell 351 and the rhombus-shaped block 352.

[0034] In the specific implementation process, it is worth noting that the rhombus block 352 is rhomboid in shape. When it is inserted into the top of the ceramic rod 31, it can drive the ball 11 to rotate and use the fixed shell 351 to rotate the rotating rod 13. In this way, the ceramic rod 31 can drive the ball 11 to rotate.

[0035] Furthermore, the heat dissipation structure 4 includes heat dissipation fins 41 and heat dissipation cover 42. Several heat dissipation fins 41 are provided, all of which are fixedly connected to the outer wall of the valve body 1. The heat dissipation cover 42 is sleeved on the outer wall of the flange 12. The cooperation between the heat dissipation fins 41 and the heat dissipation cover 42 makes the heat dissipation effect of the valve body 1 better.

[0036] In the specific implementation process, it is worth noting that the heat sink 42 is made of aluminum, which can work with the heat sink fins 41 to accelerate the heat dissipation of the valve body 1.

[0037] Specifically, based on the above embodiments, when the valve body 1 is connected to the pipeline, the heat sink 42 is placed in the middle. Through the cooperation of the heat sink fins 41 and the heat sink 42, the temperature of the valve body 1 can be reduced quickly. When the ball 11 is rotated, the diamond block 352 at the bottom of the rotating rod 13 is inserted into the top of the ceramic rod 31. This can drive the ball 11 to rotate, and the temperature of the ceramic rod 31 will not be directly transferred to the rotating rod 13, thereby avoiding the excessive temperature of the rotating rod 13 from affecting its use.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-temperature medium ball valve with good heat insulation performance, comprising a valve body (1), characterized in that: The interior of the valve body (1) is provided with a ball (11), the top of the valve body (1) is provided with a rotating rod (13), both ends of the valve body (1) are communicated with flanges (12), the high-temperature medium ball valve with good heat insulation performance further comprises: A heat insulation structure (2) is installed in the interior of the valve body (1); A sealing device (3) is installed on the top of the valve body (1); A heat dissipation structure (4) is installed on the outer wall of the valve body (1); Wherein, the heat insulation structure (2) prevents the temperature of the valve body (1) from being too high, the sealing device (3) seals the valve body (1), and the heat dissipation structure (4) accelerates heat dissipation of the valve body (1); The heat insulation structure (2) comprises: A ceramic inner layer (21) is inserted into the inner wall of the valve body (1) and adheres to the outer wall of the ball (11); A filler (22) is filled between the ceramic inner layer (21) and the valve body (1); An injection hole (23) is formed in the lower part of the valve body (1); A fixing structure (24) is installed between the ceramic inner layer (21) and the valve body (1); Wherein, the cooperation of the ceramic inner layer (21) and the filler (22) makes the heat insulation effect of the valve body (1) better, the filler (22) is injected into the cavity through the injection hole (23), and the fixing structure (24) fixes the ceramic inner layer (21) in the valve body (1).

2. The high-temperature medium ball valve with good heat insulation performance according to claim 1, characterized in that: The fixing structure (24) comprises: A stainless steel bolt (241) is threadedly connected to the inner wall of the valve body (1) and is inserted into the surface of the ceramic inner layer (21); A clamping block (242) is fixedly connected to the outer wall of the ceramic inner layer (21) and is embedded in the inner wall of the filler (22); Wherein, the cooperation of the stainless steel bolt (241) and the clamping block (242) makes the ceramic inner layer (21) fixed in the interior of the valve body (1).

3. The high-temperature medium ball valve with good heat insulation performance according to claim 1, characterized in that: The sealing device (3) comprises: A ceramic rod (31) is fixedly connected to the top of the ball (11), penetrates the ceramic inner layer (21) through a sealing bearing, and extends to the outside of the valve body (1); A fixed plate (32) is fixedly connected to the top of the valve body (1) and is sleeved on the outer wall of the ceramic rod (31); A graphite ring (33) is fixedly connected to the inner wall of the fixed plate (32) and adheres to the outer wall of the ceramic rod (31); A sealing plate (34) abuts against the top of the graphite ring (33) and is sleeved on the outer wall of the ceramic rod (31), and the bottom is fixedly connected to the top of the fixed plate (32); A connecting device (35) is installed on the top of the ceramic rod (31); Wherein, the cooperation of the graphite ring (33) and the fixed plate (32) seals between the ceramic rod (31) and the sealing plate (34), and the connecting device (35) connects the ceramic rod (31) and the rotating rod (13) together.

4. A high-temperature medium ball valve with good heat insulation performance according to claim 3, characterized in that: The connecting device (35) comprises: A fixed shell (351) is fixedly connected to the top of the fixed plate (32) and is rotatably connected to the outer wall of the rotating rod (13) through a sealing bearing; A rhombic block (352) is fixedly connected to the bottom of the rotating rod (13) and is inserted into the top of the ceramic rod (31). Wherein, through the cooperation of the fixed shell (351) and the diamond block (352), the rotating rod (13) is connected at the top of the ceramic rod (31).

5. The high-temperature medium ball valve with good heat insulation performance according to claim 1, characterized in that: The heat dissipation structure (4) comprises: A plurality of heat dissipation fins (41) are fixedly connected to the outer wall of the valve body (1); A heat dissipation cover (42) is sleeved on the outer wall of the flange (12); Wherein, through the cooperation of the heat dissipation fins (41) and the heat dissipation cover (42), the heat dissipation effect of the valve body (1) is better.

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