CN219082304U - High-temperature ball valve - Google Patents
High-temperature ball valve Download PDFInfo
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- CN219082304U CN219082304U CN202222643451.XU CN202222643451U CN219082304U CN 219082304 U CN219082304 U CN 219082304U CN 202222643451 U CN202222643451 U CN 202222643451U CN 219082304 U CN219082304 U CN 219082304U
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Abstract
The utility model relates to the technical field of valves, in particular to a high-temperature ball valve which comprises a valve body, a valve cover and a valve core; the valve body and the valve cover are matched to cover the valve core, a through hole is formed in the valve core, a valve rod penetrates through the valve body, the valve rod is connected with the valve core, and the valve rod drives the valve core to rotate; the valve cover is arranged at the inner end of the medium outlet hole and is in contact with the spherical surface of the valve core, a valve seat is arranged between the other end of the valve core and the inner end of the medium inlet hole in the valve body, the valve seat is in contact with the spherical surface of the valve core, a metal elastic adjusting group is arranged between the valve seat and the valve body, a sealing ring is arranged on the valve seat extending to the medium inlet hole, and the sealing ring seals the metal elastic adjusting group; when the valve core is closed, one end of the valve core is pressed by a high-pressure medium at the medium inlet end, so that the valve core is pushed to be in close contact with the valve cover, and effective sealing is formed.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to a high-temperature ball valve.
Background
The ball valve is widely applied in various industries due to the characteristics of compact structure, reliable sealing, short stroke and the like. In the prior art, ball valves are generally divided into a fixed ball and a floating ball, however, due to the structural characteristics of the fixed ball, the ball valve is influenced by medium pressure under the high-pressure working condition, so that an upper valve rod, a lower valve rod and a shaft sleeve are easy to wear, seize and even break. The floating ball valve directly acts on the valve seat at the outlet end due to the fact that the valve core is pushed by the acting force of the medium, and the valve seat at the outlet end is required to be made of materials capable of bearing the working load of the valve core; and the floating ball valve has large torque and difficult opening under the high-pressure working condition.
Furthermore, the back pressure seal of the ball valve seat is generally an O-shaped ring or a flexible graphite sealing ring, the use temperature of the O-shaped ring is limited, and the flexible graphite sealing ring is easy to wash under the high-pressure working condition. Meanwhile, when the valve is opened or closed under a high-pressure working condition, the flow passage opening seen by the valve seat and the ball body is extremely small, so that a throttling condition is caused, a medium forms a spray shape, and the ball opening and the valve internal parts are extremely easy to erode and abrade. Resulting in reduced valve performance.
Applicant has filed a high-pressure ball valve in 2016 (01 month 08) and has been applied for a ball valve, including valve body, valve gap, case and valve rod, the valve gap pass through first bolt assembly and valve body fastening connection, the junction of valve body and valve gap be equipped with metal seal ring, the outside of metal seal ring be the biconical structure of protruding both ends slope in the middle, the valve gap be equipped with the disk seat with case one side sphere contact in the inner of medium outlet hole, disk seat and valve gap structure as an organic whole, medium inlet hole inner of valve body and case between install the holding ring, one end of holding ring and the opposite side sphere contact of case, the other end of holding ring and valve body between be equipped with the dish spring, the surface of case, holding ring and the contact surface of case, valve gap and case on be equipped with tungsten carbide coating respectively. The high-pressure ball valve has reasonable structure, greatly improves the high-pressure resistance, the wear resistance and the sealing performance of the valve, and prolongs the service life of the valve.
However, in the use process, the medium enters into the gap of the disc spring, so that the normal operation of the disc spring is greatly hindered, and the problem needs to be solved.
Disclosure of Invention
Aiming at the problems, the utility model provides the high-temperature ball valve, which is characterized in that the disc spring is matched with the valve seat, one end of the valve core is pressed by medium at the medium inlet end, the valve core is pushed to be contacted with the valve seat, and the disc spring is sealed by the sealing ring which is arranged by extending the valve seat, so that the technical problem that the disc spring of the high-pressure ball valve in the prior art cannot be normally used due to interference of the medium is solved.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
a high-temperature ball valve comprises a valve body, a valve cover and a valve core;
the valve body and the valve cover are matched to cover the valve core, a through hole is formed in the valve core, a valve rod penetrates through the valve body, the valve rod is connected with the valve core, and the valve rod drives the valve core to rotate;
the valve cover is arranged at the inner end of the medium outlet hole in a contact manner with the spherical surface of the valve core, a valve seat is arranged between the other end of the valve core and the inner end of the medium inlet hole in the valve body, the valve seat is in contact with the spherical surface of the valve core, a metal elastic adjusting group is arranged between the valve seat and the valve body, a sealing ring is arranged on the valve seat and extends to the medium inlet hole, and the sealing ring seals the metal elastic adjusting group;
when the valve core is closed, one end of the valve core is pressed by a high-pressure medium at the medium inlet end, so that the valve core is pushed to be in close contact with the valve cover, and effective sealing is formed. The disc spring enables the valve seat to compress tightly and support the valve core, positions the valve core, prevents the valve core from loosening, and when the contact surface of the valve core and the valve cover is worn, the disc spring has the function of wear compensation, the service life of the valve is greatly prolonged, and due to the arrangement of the sealing ring, a medium cannot enter a gap between the disc spring and the valve body, and the elasticity of the disc spring is ensured.
As an improvement, the metal elastic adjusting group comprises two groups of disc springs which are symmetrically arranged, and the elastic adjusting capability of the valve seat is improved by superposing the disc springs.
As an improvement, the cross sections of the disc springs which are symmetrically arranged are arranged in a V shape.
The cross sections of the disc springs which are arranged in parallel and symmetrically are arranged in an inverted V shape, and the two groups of disc springs are matched with each other, so that the sealing performance of the valve cover and the valve core is greatly improved.
As an improvement, a dust ring is arranged between the valve body and the adjacent disc spring, and the medium is prevented from entering the disc spring by the dust ring.
As an improvement, the sealing ring is arranged in a conical manner towards the end part of the medium inlet hole, the medium can be effectively prevented from entering the conical end part, and meanwhile, when the sealing ring is movably adjusted, the sealing ring can well form dislocation with the medium.
As an improvement, the outer side of the valve core is provided with a clamping groove which is vertical to the axial direction of the through hole, and the end part of the inner end of the valve rod is provided with a boss matched with the clamping groove;
when the valve core is in a sealing state, the clamping groove is arranged in parallel with the medium inlet, and when the valve core is under the action of pressure, the boss and the clamping groove can slide relatively, so that on one hand, the close fit of the valve core and the valve seat is ensured, and on the other hand, the pressure born by the valve core is prevented from being transmitted to the valve rod.
As an improvement, a convex ring is arranged at the outer side of the inner end of the valve rod to prevent the valve rod from flying out; a thrust bearing is arranged between the convex ring and the inner end of the valve rod hole. The thrust bearing can ensure smooth rotation of the valve rod.
As an improvement, the valve body is provided with a valve rod hole, a shaft sleeve is arranged in the valve rod hole, the upper part of the shaft sleeve is also provided with sealing filler, and the sealing filler is tightly pressed and sealed through a compression ring, a compression plate and a stud.
As an improvement, the valve body is connected with the valve cover through the stud, a metal sealing ring is arranged at the joint of the valve body and the valve cover, the outer sides of two ends of the metal sealing ring are conical, the valve body and the valve cover have a pressure self-tightening function, and after the valve body and the valve cover are screwed up through the stud, the two conical surfaces are respectively sealed with the valve body and the valve cover.
As improvement, the two ends of the valve core through hole are provided with the flow guiding gaps which are W-shaped, so that the flow can be improved by more than three times when the valve core is opened compared with the traditional structure, thereby slowing down the scouring of a medium to the valve and prolonging the service life of the valve.
As improvement, the valve inner parts such as the valve cover, the valve seat and the like are not provided with any elastic sealing piece made of rubber materials, and can be suitable for high-temperature and high-pressure occasions.
As an improvement, the valve seat is supported by the disc spring, and when the pressure of medium in the valve cavity is abnormally increased, the disc spring can be reversely compressed by the valve seat, so that the valve cavity is automatically depressurized.
As improvement, the surfaces of the valve cover, the valve seat and the valve core are respectively sprayed with nickel-chromium-cobalt-based hard alloy coatings. The wear resistance can be improved, so that the service life of the whole ball valve is prolonged.
Therefore, the utility model has the beneficial effects of abrasion compensation function, good sealing performance and long service life, and can be suitable for high-temperature high-pressure working conditions.
The utility model has the beneficial effects that:
(1) The utility model discloses an utilize dish spring cooperation disk seat, plus the one end of case receives the pressure of medium inlet end medium, promote the case with the disk seat contacts to utilize the sealing ring that the disk seat extends the setting to seal the dish spring, solve the dish spring of the high-pressure ball valve among the prior art and receive the unable normal technical problem who uses of medium interference;
(2) When the valve core is in a closed state, the direction of the clamping groove is the same as the direction in which the valve core is pressed, and when the valve core is under the action of pressure, the boss and the clamping groove can slide relatively, so that the valve core is tightly matched with the valve seat, and the pressure born by the valve core is prevented from being transmitted to the valve rod.
In conclusion, the utility model has the advantages of good sealing performance, wide application range, long service life and the like, and is particularly suitable for the technical field of high-temperature high-pressure valve structures.
Drawings
FIG. 1 is a schematic diagram of a structure of the present utility model;
FIG. 2 is a schematic view of a metal elastic adjusting group structure according to the present utility model;
FIG. 3 is a schematic view of a disc spring according to the present utility model;
FIG. 4 is a schematic diagram of a disc spring according to a second embodiment of the present utility model;
fig. 5 is a schematic diagram of a disc spring according to the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Examples:
the high-temperature ball valve as shown in figures 1 to 5 comprises a valve body 1, a valve cover 2 and a valve core 3;
the valve body 1 and the valve cover 2 are matched to cover the valve core 3, a through hole is arranged in the valve core 3, a valve rod 4 is arranged on the valve body 1 in a penetrating mode, the valve rod 4 is connected with the valve core 3, and the valve rod 4 drives the valve core 3 to rotate;
the valve cover 2 is arranged on the inner end of the medium outlet hole 30 in a contact manner with the spherical surface of the valve core 3, a valve seat 5 is arranged between the other end of the valve core 3 and the inner end of the medium inlet hole 31 in the valve body 1, the valve seat 5 is in contact with the spherical surface of the valve core 3, a metal elastic adjusting group 6 is arranged between the valve seat 5 and the valve body 1, a sealing ring 51 is arranged on the valve seat 5 extending to the medium inlet hole 31, and the sealing ring 51 seals the metal elastic adjusting group 6;
when the valve core 3 is closed, one end of the valve core 3 is subjected to pressure of medium at the medium inlet hole 31, and the valve core 3 is pushed to be in contact with the valve cover 2.
In the existing high-temperature ball valve, in the using process, the medium flowing through the ball valve can enter into the gap of the disc spring to prevent the disc spring from being used, and the high-temperature high-pressure ball valve can only use the metal elastic adjusting piece, so that the normal work of the disc spring is required to be prevented from being interfered by the medium.
This application is through utilizing sealing ring 51 that valve seat 5 extends the integral type that forms, utilizes sealing ring 51 and valve body 1 cooperation to seal the dish spring, has guaranteed the normal work of dish spring.
Further, the metal elastic adjusting group 6 includes two groups of disc springs 61 symmetrically arranged.
Further, the cross section of the disc springs 61 symmetrically arranged is V-shaped.
The cross sections of the disc springs 61 which are arranged in parallel and symmetrically are arranged in an inverted V shape.
In order to improve the sealing effect, a dust-proof ring 62 is disposed between the valve body 1 and the adjacent disc spring 61.
Furthermore, the sealing ring 51 is tapered toward the end of the medium inlet hole 31.
By the above arrangement, the elastic adjustment capability of the disc spring 61 is enhanced, and the dust-proof and medium-proof capability is greatly enhanced.
The outside of the valve core 3 is provided with a clamping groove 40, the clamping groove 40 is vertical to the axial direction of the through hole, and the end part of the inner end of the valve rod 4 is provided with a boss 70 matched with the clamping groove 40;
when the valve core 3 is in a sealed state, the clamping groove 40 is arranged in parallel with the medium inlet hole 31.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (3)
1. The utility model provides a high temperature ball valve which characterized in that:
comprises a valve body, a valve cover and a valve core;
the valve body and the valve cover are matched to cover the valve core, a through hole is formed in the valve core, a valve rod penetrates through the valve body, the valve rod is connected with the valve core, and the valve rod drives the valve core to rotate;
the valve cover is arranged at the inner end of the medium outlet hole in a contact manner with the spherical surface of the valve core, a valve seat is arranged between the other end of the valve core and the inner end of the medium inlet hole in the valve body, the valve seat is in contact with the spherical surface of the valve core, a metal elastic adjusting group is arranged between the valve seat and the valve body, a sealing ring is arranged on the valve seat and extends to the medium inlet hole, and the sealing ring seals the metal elastic adjusting group;
when the valve core is closed, one end of the valve core is subjected to pressure of medium at the medium inlet end, and the valve core is pushed to be contacted with the valve cover;
the metal elastic adjusting group comprises two groups of disc springs which are symmetrically arranged;
the cross sections of the disc springs which are symmetrically arranged are arranged in a V shape;
a dust ring is arranged between the valve body and the adjacent disc spring;
the sealing ring is arranged in a conical manner towards the end part of the medium inlet hole.
2. The high temperature ball valve of claim 1, wherein:
the cross sections of the disc springs which are symmetrically arranged are arranged in an inverted V shape.
3. A high temperature ball valve according to any one of claims 1-2, wherein:
the outer side of the valve core is provided with a clamping groove which is vertical to the axial direction of the through hole, and the end part of the inner end of the valve rod is provided with a boss matched with the clamping groove;
when the valve core is in a sealing state, the clamping groove is arranged in parallel with the medium inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222643451.XU CN219082304U (en) | 2022-10-09 | 2022-10-09 | High-temperature ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222643451.XU CN219082304U (en) | 2022-10-09 | 2022-10-09 | High-temperature ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219082304U true CN219082304U (en) | 2023-05-26 |
Family
ID=86391826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222643451.XU Active CN219082304U (en) | 2022-10-09 | 2022-10-09 | High-temperature ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219082304U (en) |
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2022
- 2022-10-09 CN CN202222643451.XU patent/CN219082304U/en active Active
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