Ultrahigh-temperature floating ball valve with high sealing performance
By adopting a double sealing design in the ultra-high temperature floating ball valve, the high-temperature composite pad and metal sealing ring are used to seal between the middle valve body and the end cover, the problem of degradation of sealing performance of traditional floating ball valves at high temperatures is solved, and a high-reliability sealing effect is achieved.
Patent Information
- Application Number
- CN202422007383.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-19
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-08-19
AI Technical Summary
Traditional floating ball valves are easily softened, deformed or failed in ultra-high temperature environments, resulting in a degradation of sealing performance, and the components may be stuck due to uneven thermal expansion and cannot be switched normally.
A high-sealing ultra-high temperature floating ball valve is designed, and the interior of the first groove and the second groove opened between the middle valve body and the end cover is double sealed using a high-temperature composite pad and a metal sealing ring. When the temperature rises, the metal sealing ring expands to achieve the main seal, and the high-temperature composite pad serves as a secondary seal to ensure good sealing performance is maintained at high temperatures.
Through the dual sealing design, good sealing performance can be maintained at high temperatures, compensate for the unroundness of the ball and micro unevenness, improve the reliability of the sealing, and maintain the stable temperature of the valve through the heat sink to avoid softening or failure of the sealing material.
Smart Images
Figure CN223035726U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of valves, in particular to an ultra-high temperature floating ball valve with high sealing performance. Background Art
[0002] Floating ball valves play an important role in the field of valve technology. Their characteristic is that the ball can produce a certain displacement under the action of the medium pressure and tightly press on the sealing surface at the outlet end, thus ensuring the sealing performance at the outlet end. The flow resistance of the ball valve is the smallest. When the full-bore ball valve is opened, the ball passage, the valve body passage and the connecting pipe diameter are equal and form a straight diameter, and the medium can flow through with almost no loss. However, under the working conditions of ultra-high temperature and high pressure, the sealing performance of traditional floating ball valves will decrease.
[0003] When traditional floating ball valves are in use, in a high-temperature environment, components such as the valve body and the ball will undergo thermal expansion, and the medium pressure fluctuates greatly. The currently used sealing materials are prone to softening, deformation or failure at high temperatures, resulting in a decrease in sealing performance, and some components are prone to jamming due to uneven thermal expansion, resulting in the phenomenon that the ball valve cannot be opened or closed normally. Summary of the Utility Model
[0004] The technical problem to be solved by the utility model is: in the prior art, there are disadvantages such as the softening, deformation or failure of the sealing material of the ultra-high temperature floating ball valve during use due to the high-temperature environment. For this reason, we propose an ultra-high temperature floating ball valve with high sealing performance.
[0005] In order to achieve the above purpose, the present application adopts the following technical scheme: an ultra-high temperature floating ball valve with high sealing performance, including a main valve body, a middle valve body is installed on the surface of the main valve body, an end cover is installed at one end of the middle valve body, a side valve body is fixedly penetrated inside the middle valve body, a ball is arranged inside the middle valve body, a valve rod is rotatably connected inside the side valve body, the top of the ball is fixed to the bottom of the valve rod, an inner ring is installed on the surface of one end of the valve rod, a connecting seat is fixed to the top of the side valve body, a top cover is installed on the top of the connecting seat, first grooves are opened on both sides of one end of the middle valve body and the end cover, a metal sealing ring is arranged inside the first grooves, second grooves are opened on both sides of one end of the middle valve body, and contact blocks for cooperating with the second grooves are fixed on both sides of one end of the end cover.
[0006] Preferably, a high-temperature composite pad is fixed inside the second groove, and the other end of the high-temperature composite pad abuts against the contact block.
[0007] Preferably, a plurality of heat dissipation fins are installed on the surface of the side valve body and are longitudinally distributed.
[0008] Preferably, an annular sealing block is fixed to the top of the middle valve body, and the inner part of the annular sealing block is in contact with the surface of the side valve body.
[0009] Preferably, a sealing gasket is fixed to the bottom of the top cover. The outer side of the sealing gasket is in contact with the inner side of the connecting seat, and the inner side of the sealing gasket is in contact with the valve stem.
[0010] Preferably, the end cover and the valve seat are of an integral structure.
[0011] Preferably, a handle is installed at the top of the valve stem, and the length of the valve stem is increased.
[0012] The technical effects and advantages of the present utility model:
[0013] In the present utility model, a high-temperature composite gasket and a metal sealing ring are used inside the first groove and the second groove formed between the middle valve body and the end cover for double sealing. When the temperature rises, the metal sealing ring expands to achieve the main seal, and the high-temperature composite gasket serves as the secondary seal to ensure good sealing performance at high temperatures. Through the above design, the non-circularity and micro-roughness of the sphere can be compensated, and the reliability of the seal can be improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 is the front view structural schematic diagram of the present utility model;
[0015] Figure 2 is the internal sectional structural schematic diagram of the present utility model;
[0016] Figure 3 is the sectional and disassembled structural schematic diagram of the valve body inside the present utility model;
[0017] Figure 4 is the disassembled structural schematic diagram of the top cover of the present utility model.
[0018] Legend: 1, main valve body; 2, middle valve body; 3, end cover; 4, side valve body; 5, sphere; 6, valve stem; 7, inner ring; 8, connecting seat; 9, top cover; 10, first groove; 11, metal sealing ring; 12, second groove; 13, contact block; 14, high-temperature composite gasket; 15, heat sink; 16, annular sealing block; 17, sealing gasket; 18, handle. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0019] Now, the present utility model will be further described in detail with reference to the accompanying drawings and preferred embodiments. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present utility model in a schematic manner, so they only show the components related to the present utility model.
[0020] Refer to Figures 1-4As shown in the figure, the present utility model provides a technical solution: a super-high temperature floating ball valve with high sealing performance, which includes a main valve body 1. A middle valve body 2 is installed on the surface of the main valve body 1. An end cover 3 is installed at one end of the middle valve body 2. A side valve body 4 is fixedly penetrated inside the middle valve body 2. A ball 5 is arranged inside the middle valve body 2. A valve stem 6 is rotatably connected inside the side valve body 4. The top of the ball 5 is fixed to the bottom of the valve stem 6. An inner ring 7 is installed on the surface of one end of the valve stem 6. A connection seat 8 is fixed to the top of the side valve body 4. A top cover 9 is installed on the top of the connection seat 8. First grooves 10 are opened on both sides of one end of the middle valve body 2 and the end cover 3. A metal sealing ring 11 is arranged inside the first grooves 10. Second grooves 12 are opened on both sides of one end of the middle valve body 2. Contact blocks 13 used in cooperation with the second grooves 12 are fixed on both sides of one end of the end cover 3. A high-temperature composite gasket 14 is fixed inside the second grooves 12. The other end of the high-temperature composite gasket 14 abuts against the contact blocks 13. By using the high-temperature composite gasket 14 and the metal sealing ring 11 inside the first grooves 10 and the second grooves 12 opened between the middle valve body 2 and the end cover 3 for double sealing, when the temperature rises, the metal sealing ring 11 expands to achieve the main seal, and the high-temperature composite gasket 14 serves as the secondary seal to ensure good sealing performance at high temperatures. Through the above design, the non-roundness and microscopic unevenness of the ball 5 can be compensated, and the reliability of the seal can be improved.
[0021] Referring to Figure 2 As shown in the figure, in this embodiment: A plurality of heat dissipation fins 15 are installed on the surface of the side valve body 4 and are longitudinally distributed. By utilizing the effective heat dissipation effect of the multi-layer heat dissipation fins 15, it can ensure that the super-high temperature floating ball valve maintains a relatively stable temperature during operation, avoiding adverse effects such as softening, expansion or contraction of the sealing material caused by excessive temperature, thereby ensuring the sealing performance of the valve.
[0022] Referring to Figure 3 As shown in the figure, in this embodiment: An annular sealing block 16 is fixed to the top of the middle valve body 2. The inside of the annular sealing block 16 abuts against the surface of the side valve body 4. By setting the annular sealing block 16, the sealing performance between the side valve body 4 and the middle valve body 2 can be enhanced.
[0023] Referring to Figure 4 As shown in the figure, in this embodiment: A sealing gasket 17 is fixed to the bottom of the top cover 9. The outside of the sealing gasket 17 abuts against the inside of the connection seat 8, and the inside of the sealing gasket 17 abuts against the valve stem 6. By setting the sealing gasket 17, the phenomenon of external leakage during the rotation of the valve stem 6 can be avoided.
[0024] Referring to Figure 2As shown in the figure, in this embodiment: The end cap 3 and the valve seat are of an integral structure. A handle 18 is installed at the top of the valve stem 6. The length of the valve stem 6 is increased. By lengthening the valve stem 6 and designing the end cap 3 and the valve seat as one body, the risk of internal leakage can be reduced, and the seizure of the valve seat caused by high temperature can also be prevented.
[0025] Working principle: The user adopts a high-temperature composite gasket 14 and a metal sealing ring 11 inside the first groove 10 and the second groove 12 opened between the middle valve body 2 and the end cap 3 for double sealing. When the temperature rises, the metal sealing ring 11 expands to achieve the main seal, and the high-temperature composite gasket 14 serves as the secondary seal to ensure good sealing performance at high temperatures. Through the above design, the non-circularity and micro-roughness of the sphere 5 can be compensated, and the reliability of the seal can be improved. By utilizing the effective heat dissipation effect of the multi-layer heat sinks 15, it can ensure that the ultra-high temperature floating ball valve maintains a relatively stable temperature during operation, avoiding adverse effects such as softening, expansion, or contraction of the sealing material caused by excessive temperature, thereby guaranteeing the sealing performance of the valve. By setting the annular sealing block 16, the sealing performance between the side valve body 4 and the middle valve body 2 can be enhanced. By setting the sealing gasket 17, the phenomenon of external leakage during the rotation of the valve stem 6 can be avoided. By lengthening the valve stem 6 and designing the end cap 3 and the valve seat as one body, the risk of internal leakage can be reduced, and the seizure of the valve seat caused by high temperature can also be prevented.
[0026] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. An ultra-high temperature floating ball valve with high sealing performance, comprising a main valve body (1), characterized in that: A middle valve body (2) is mounted on the surface of the main valve body (1), an end cover (3) is mounted on one end of the middle valve body (2), a side valve body (4) is fixedly mounted inside the middle valve body (2), a ball (5) is arranged inside the middle valve body (2), a valve stem (6) is rotatably connected inside the side valve body (4), the top of the ball (5) is fixed to the bottom of the valve stem (6), an inner ring (7) is mounted on the surface of one end of the valve stem (6), a connecting seat (8) is fixed on the top of the side valve body (4), a top cover (9) is mounted on the top of the connecting seat (8), first grooves (10) are provided on both sides of one end of the middle valve body (2) and the end cover (3), a metal sealing ring (11) is arranged inside the first groove (10), second grooves (12) are provided on both sides of one end of the middle valve body (2), and contact blocks (13) used in conjunction with the second groove (12) are fixed on both sides of one end of the end cover (3).
2. The ultra-high temperature floating ball valve with high sealing performance according to claim 1, characterized in that: A high-temperature composite pad (14) is fixed inside the second groove (12), and the other end of the high-temperature composite pad (14) is in contact with the contact block (13).
3. The ultra-high temperature floating ball valve with high sealing performance according to claim 1, characterized in that: A plurality of cooling fins (15) are mounted on the surface of the side valve body (4) and are distributed longitudinally.
4. The ultra-high temperature floating ball valve with high sealing performance according to claim 1, characterized in that: An annular sealing block (16) is fixed to the top of the middle valve body (2), and the interior of the annular sealing block (16) abuts against the surface of the side valve body (4).
5. The ultra-high temperature floating ball valve with high sealing performance according to claim 1, characterized in that: A sealing gasket (17) is fixed to the bottom of the top cover (9), the outer side of the sealing gasket (17) abuts against the inner side of the connecting seat (8), and the inner side of the sealing gasket (17) abuts against the valve stem (6).
6. The ultra-high temperature floating ball valve with high sealing performance according to claim 1, characterized in that: The end cover (3) and the valve seat are an integrated structure.
7. The ultra-high temperature floating ball valve with high sealing performance according to claim 1, characterized in that: A handle (18) is installed on the top of the valve stem (6), and the length of the valve stem (6) is increased.