Sealing structure of regulating valve and regulating valve

Abstract

The utility model relates to the technical field of fuel gas pressure regulation, in particular to a sealing structure of a regulating valve and the regulating valve, the sealing structure comprises a first sealing groove, the first sealing groove is arranged among a valve seat, a valve cage and a valve barrel, and a triangular ring is arranged in the first sealing groove; the second sealing groove is formed in the valve cage and located at the end, close to the valve seat, of the valve cage, and an O-shaped ring is arranged in the second sealing groove. According to the utility model, the design of a valve port sealing ring is cancelled, the structure is simple, the manufacturing is convenient, and the cost is low. The sealing structure is reliable, high in stability, convenient to assemble and wide in application. Through the combination of the triangular ring and the O-shaped ring, more stable and reliable sealing can be provided under the high-pressure and large-flow working environment. The triangular ring has good pressure resistance and is suitable for being applied to a large-flow and high-pressure regulating valve; the O-shaped ring is high in adaptability, and low pressure and the stability of a sealing face can be guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas pressure regulating technical field especially, relates to a sealing structure and regulating valve of regulating valve. BACKGROUND

[0002] The axial flow type pressure regulating valve in the gas pressure regulating field is suitable for high pressure and large flow working conditions, and is commonly used in adjusting user pressure or flow occasions. The sealing structure of the regulating valve is various, and the reliability of the sealing structure is an important index for measuring the stability of the regulating valve.

[0003] The sealing structure of the existing sealing structure adopts the sealing form of the valve port sealing ring structure, a valve port sealing ring is arranged between the valve seat, the valve cage and the valve cylinder for sealing, the valve port sealing ring is a T-shaped structure, and the sealing failure often occurs due to the influence of the size precision and deformation of the valve port sealing ring, the installation is inconvenient, the structure is complex, the manufacturing is not convenient, the cost is high, and the sealing structure is unreliable.

[0004] The information disclosed in this BACKGROUND section is only for the purpose of enhancing the understanding of the background of the present utility model, and should not be considered as acknowledging or implying in any form that this information constitutes prior art known to those skilled in the art. CONTENT OF THE UTILITY MODEL

[0005] The utility model provides a sealing structure and regulating valve of regulating valve to effectively solve the problem in the background art.

[0006] In order to achieve the above purpose, the utility model adopts the technical scheme of a sealing structure of regulating valve, comprising:

[0007] A first sealing groove is arranged between the valve seat, the valve cage and the valve cylinder, and a triangular ring is arranged in the first sealing groove.

[0008] A second sealing groove is arranged on the valve cage and located at one end of the valve cage close to the valve seat, and an O-shaped ring is arranged in the second sealing groove.

[0009] Further, the first sealing groove is a triangular structure in cross section, and the triangular ring is a right-angled triangular structure in cross section.

[0010] Further, the first sealing groove includes a bevel at one end of the valve seat and abuts with the oblique side of the triangular ring, the first sealing groove abuts with one right-angled side of the triangular ring between the valve seat and the valve cylinder, and the first sealing groove abuts with another right-angled side of the triangular ring between the valve cage and the valve cylinder.

[0011] Further, the first sealing groove is provided with an extrusion edge at the valve cylinder to extrude the right angle of the triangular ring.

[0012] Furthermore, the triangular ring cross-section is set with rounded corners at the three corners.

[0013] Furthermore, the triangular ring is made of fluororubber.

[0014] Furthermore, the cross-section of the second sealing groove is set to be rectangular.

[0015] This utility model also includes a regulating valve, comprising a valve seat, a valve cage, and a valve cylinder, wherein a sealing structure as described above is provided between the valve seat, the valve cage, and the valve cylinder.

[0016] The beneficial effects of this utility model are as follows: By eliminating the valve port sealing ring design, the structure is simple, easy to manufacture, and low in cost. The sealing structure is reliable, highly stable, easy to assemble, and widely applicable. By using a combination of triangular rings and O-rings, a more robust and reliable seal can be provided in high-pressure and high-flow operating environments. Triangular rings have good pressure resistance and are suitable for high-flow, high-pressure regulating valve applications; O-rings are highly adaptable and can ensure the stability of the sealing surface under low pressure. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the sealed structure;

[0019] Figure 2 for Figure 1 The diagram contains a hidden triangular ring structure.

[0020] Figure 3 This is a schematic diagram of the structure of a triangular ring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] like Figures 1 to 3 As shown: A sealing structure for a regulating valve and a regulating valve, comprising:

[0023] The first sealing groove 1 is disposed between the valve seat 3, the valve cage 4 and the valve cylinder 5, and a triangular ring 11 is disposed in the first sealing groove 1.

[0024] Second sealing groove 2 is provided on valve cage 4 and located at one end of valve cage 4 close to valve seat 3. Second sealing groove 2 is provided with O-ring 21.

[0025] First sealing groove 1 is located between valve seat 3, valve cage 4 and valve cylinder body 5. This position ensures that the fluid in the valve body will not leak due to poor sealing. First sealing groove 1 is provided with triangular ring 11. Compared with the traditional T-shaped sealing ring structure, triangular ring 11 has better pressure resistance and wear resistance, and can maintain stable sealing effect under high pressure. The shape design of triangular ring 11 can better adapt to the slight deformation between the valve body and valve seat 3, ensuring the continuous reliability of the seal. Second sealing groove 2 is provided on valve cage 4 and located at one end close to valve seat 3. This position can effectively prevent fluid leakage and ensure that valve cage 4 maintains good sealing contact with valve seat 3 and valve cylinder body 5 in a sealed state. Second sealing groove 2 is provided with O-ring 21. O-ring 21 has good sealing performance and can adapt to a wide range of temperature and pressure changes, and is widely used in various industrial valve seals. Its circular structure can uniformly bear stress, thereby forming a durable and stable sealing state to prevent leakage.

[0026] By canceling the valve port sealing ring design, the structure is simple, easy to manufacture, and low in cost. The sealing structure is reliable, stable, easy to assemble, and widely applicable. By using the combination of triangular ring 11 and O-ring 21, a more stable and reliable seal can be provided in high-pressure and high-flow working environments. Triangular ring 11 has good pressure resistance and is suitable for high-flow and high-pressure regulating valve applications; O-ring 21 has strong adaptability and can ensure the stability of the low-pressure and sealing surface.

[0027] In this embodiment, the first sealing groove 1 has a triangular cross-section, and the triangular ring 11 has a right-angled triangular cross-section.

[0028] The triangular cross-section makes the sealing groove more simple and stable in geometry. The triangular structure can provide stronger sealing force because it can generate greater contact pressure under high pressure, ensuring a tight fit between the sealing surfaces. The right-angled triangular cross-section design allows the triangular ring 11 to be uniformly stressed when compressed and fully contacts the triangular groove wall of the sealing groove, thereby achieving better sealing effect.

[0029] In this embodiment, the first sealing groove 1 includes a bevel at one end of the valve seat 3 that fits with the bevel edge of the triangular ring 11. The first sealing groove 1 includes a right-angled edge between the valve seat 3 and the valve cylinder body 5 that fits with one of the right-angled edges of the triangular ring 11. The first sealing groove 1 includes another right-angled edge between the valve cage 4 and the valve cylinder body 5 that fits with the other right-angled edge of the triangular ring 11.

[0030] By setting a bevel at the end of valve seat 3, the sealing groove can better mate with the bevel of the triangular ring 11. This effectively increases the sealing contact area, ensuring a more reliable seal between valve seat 3 and valve body 5. The bevel design helps to evenly distribute the pressure in the sealing contact area, reducing stress concentration and improving the sealing effect.

[0031] The first sealing groove 1 is fitted with one right-angled side of the triangular ring 11 between the valve seat 3 and the valve body 5, ensuring the stable position of the triangular ring 11 within the sealing groove. Because the contact point between the right-angled side of the triangular ring 11 and the valve seat 3 and valve body 5 is more stable, it effectively prevents sealing failure caused by temperature and pressure changes or minor deformation of the valve body. Furthermore, this fitting method improves the sealing stability between the valve seat 3, valve cage 4, and valve body 5, ensuring effective isolation of gas or liquid. The first sealing groove 1 is fitted with the other right-angled side of the triangular ring 11 between the valve cage 4 and valve body 5, further enhancing the stability of the sealing structure. By fitting the right-angled side of the triangular ring 11 between the valve cage 4 and valve body 5, a double sealing guarantee can be formed, thereby increasing the sealing efficiency and fault tolerance of the sealing area. This effectively prevents gas or liquid leakage under high pressure or high flow conditions.

[0032] As a preferred embodiment of the above, the first sealing groove 1 is provided with a pressing edge 12 at the valve cylinder 5 to press the right angle of the triangular ring 11.

[0033] The extrusion edge 12 applies a certain amount of pressure during valve operation, causing the right-angled edge of the triangular ring 11 to fit more tightly against the wall of the sealing groove. This design effectively increases the contact pressure between the triangular ring 11 and the sealing groove, further improving the sealing effect and preventing fluid leakage.

[0034] In this embodiment, the cross section of the triangular ring 11 is set as rounded corners at the three corners.

[0035] The rounded corner design significantly reduces wear on sealing elements, extends the lifespan of the sealing system, and reduces downtime and maintenance costs due to seal failure. Especially in industrial applications requiring long-term stable operation, it effectively reduces maintenance frequency and equipment replacement costs. Furthermore, the rounded corner makes the manufacturing of the triangular ring 11 easier and more cost-effective, facilitating demolding.

[0036] As a preferred embodiment of the above, the triangular ring 11 is made of fluororubber.

[0037] Fluororubber possesses excellent high-temperature resistance, typically maintaining good sealing performance within a temperature range of -20°C to +250°C. In some special formulations, its temperature resistance can even reach +300°C. This makes fluororubber particularly suitable for sealing applications in high-temperature environments, such as high-temperature control valves and hot oil systems.

[0038] The high elasticity of the fluororubber enables the contact surface of the triangular ring 11 in the sealing groove to better fit the sealing groove wall, thereby reducing the possibility of fluid leakage. The self-recovery capability of the fluororubber enables the compression performance of the triangular ring 11 in the sealing groove to be better maintained, and even in a long-term high-pressure and large-flow working state, a relatively high sealing effect can be maintained.

[0039] In the second sealing groove 2, a rectangular cross section is provided.

[0040] The rectangular cross section can provide the O-shaped ring 21 with more stable and reliable sealing effect. The rectangular cross section can better ensure that the contact surface of the O-shaped ring 21 with the sealing groove is uniform, and avoid uneven sealing due to irregular groove shape.

[0041] As shown in FIG.

[0042] The adjusting valve further includes a valve seat 3, a valve cage 4 and a valve cylinder 5, and the sealing structure as described above is arranged between the valve seat 3, the valve cage 4 and the valve cylinder 5.

[0043] By canceling the valve port sealing ring design, the structure is simple, easy to manufacture, and low in cost. The sealing structure is reliable, high in stability, easy to assemble, and widely applicable. By using the combination of the triangular ring 11 and the O-shaped ring 21, more stable and reliable sealing can be provided in a high-pressure and large-flow working environment. The triangular ring 11 has good pressure resistance and is suitable for large-flow and high-pressure adjusting valve applications; the O-shaped ring 21 is highly adaptable and can ensure the stability of the low-pressure and sealing surface.

[0044] In the description of the present application, the terms "first", "second" are only used for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. The meaning of "multiple" is two or more, unless otherwise specifically limited.

[0045] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0046] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms is not necessarily directed to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples, without contradiction.

[0047] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application.

Claims

1. A sealing structure for a regulating valve, characterized in that, The utility model relates to a sealing structure of valve, including: First sealing groove, first sealing groove is set between valve seat, valve cage and valve cylinder, and is provided with triangular ring in first sealing groove; Second sealing groove, second sealing groove is set on valve cage and is located in one end of valve cage close to valve seat, and is provided with O type ring in second sealing groove.

2. The seal structure of the regulating valve according to claim 1, characterized by The first sealing groove section is triangular structure, and the triangular ring section is right triangle structure.

3. The seal structure of the regulating valve according to claim 2, wherein The first sealing groove includes a bevel with the hypotenuse of the triangular ring at one end of the valve seat, and the first sealing groove is combined with one of the right angles of the triangular ring between the valve seat and the valve cylinder body, and the first sealing groove is combined with the other right angle of the triangular ring between the valve cage and the valve cylinder body.

4. The seal structure of the regulating valve according to claim 3, wherein The first sealing groove is provided with an extrusion edge at the valve cylinder body, which extrudes the right angle of the triangular ring.

5. The seal structure of the regulating valve according to claim 2, wherein The triangular ring section is provided with a circular arc angle at three corners.

6. The seal structure of the regulating valve according to claim 1, wherein The triangular ring is made of fluorine rubber.

7. The seal structure of the regulating valve according to claim 1, wherein The second sealing groove section is rectangular.

8. A regulating valve, characterized by The utility model relates to a sealing structure of valve, including: First sealing groove, first sealing groove is set between valve seat, valve cage and valve cylinder, and is provided with triangular ring in first sealing groove; Second sealing groove, second sealing groove is set on valve cage and is located in one end of valve cage close to valve seat, and is provided with O type ring in second sealing groove. The first sealing groove section is triangular structure, and the triangular ring section is right triangle structure. The first sealing groove includes a bevel with the hypotenuse of the triangular ring at one end of the valve seat, and the first sealing groove is combined with one of the right angles of the triangular ring between the valve seat and the valve cylinder body, and the first sealing groove is combined with the other right angle of the triangular ring between the valve cage and the valve cylinder body. The first sealing groove is provided with an extrusion edge at the valve cylinder body, which extrudes the right angle of the triangular ring. The triangular ring section is provided with a circular arc angle at three corners. The triangular ring is made of fluorine rubber. The second sealing groove section is rectangular. The utility model relates to a sealing structure of valve, including: First sealing groove, first sealing groove is set between valve seat, valve cage and valve cylinder, and is provided with triangular ring in first sealing groove; Second sealing groove, second sealing groove is set on valve cage and is located in one end of valve cage close to valve seat, and is provided with O type ring in second sealing groove. The first sealing groove section is triangular structure, and the triangular ring section is right triangle structure. The first sealing groove includes a bevel with the hypotenuse of the triangular ring at one end of the valve seat, and the first sealing groove is combined with one of the right angles of the triangular ring between the valve seat and the valve cylinder body, and the first sealing groove is combined with the other right angle of the triangular ring between the valve cage and the valve cylinder body. The first sealing groove is provided with an extrusion edge at the valve cylinder body, which extrudes the right angle of the triangular ring. The triangular ring section is provided with a circular arc angle at three corners. The triangular ring

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