CN213017821U - High-temperature metal sealing ball valve - Google Patents
High-temperature metal sealing ball valve Download PDFInfo
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- CN213017821U CN213017821U CN202021063973.7U CN202021063973U CN213017821U CN 213017821 U CN213017821 U CN 213017821U CN 202021063973 U CN202021063973 U CN 202021063973U CN 213017821 U CN213017821 U CN 213017821U
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Abstract
The utility model discloses a high-temperature metal sealing ball valve, which comprises a valve body, wherein a ball body is arranged in the valve body, the ball body is rotationally connected with the valve body, and the rotating ball body can control the communication and the closing of the valve body; the two valve seats are respectively attached to the two sides of the ball body in a sealing manner and can move along with the deformation of the ball body; the inner ring is fixedly connected to the valve seat, and the outer ring is in contact with the valve body and can deform along with the movement of the valve seat; and the gland is fixedly connected with the valve body and can compress the elastic sealing element to be tightly attached to the valve body so as to realize the sealing between the valve seat and the valve body. According to the utility model discloses high temperature metal seal ball valve adopts and to dismantle the elastic seal pair, can prevent the emergence of the dead phenomenon of card under high temperature state, and the installation is dismantled and is maintained the convenience, can effectively improve production efficiency, reduce cost.
Description
Technical Field
The utility model relates to a fluid hydraulic pressure operating system field especially relates to a high temperature metal seal ball valve.
Background
At present, high-temperature ball valves are widely applied in various industries, but the phenomenon of blocking caused by deformation of a ball body or a sealing ring is easily generated under the high-temperature working condition, so that the high-temperature ball valves mainly adopt metal sealing pairs, and have the advantages of wide application temperature range, use temperature higher than 250 ℃, and the defects of high material hardness, high specific pressure required by sealing, and great abrasion between a valve seat and the ball body due to large sealing specific pressure even if pretightening force is adopted to achieve sealing.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a high temperature metal seal ball valve adopts and to dismantle the elastic seal pair, can prevent the emergence of the dead phenomenon of card under high temperature state, and the installation is dismantled and is maintained the convenience, can effectively improve production efficiency, reduce cost.
According to the utility model discloses a high temperature metal seal ball valve of first aspect embodiment, include: the valve body is internally provided with a ball body which is rotationally connected with the valve body, and the connection and the closing of the valve body can be controlled by rotating the ball body; the two valve seats are respectively attached to the two sides of the ball body in a sealing manner and can move along with the deformation of the ball body; the inner ring is fixedly connected to the valve seat, and the outer ring is in contact with the valve body and can deform along with the movement of the valve seat; and the gland is fixedly connected with the valve body and can compress the elastic sealing element to be tightly attached to the valve body so as to realize the sealing between the valve seat and the valve body.
According to the utility model discloses high temperature metal seal ball valve has following technological effect at least: the valve body is internally provided with a ball body, the valve seats are arranged in the valve body, a gap is reserved between the valve seats and the valve body, and the two valve seats are respectively attached to the two sides of the ball body in a sealing manner and can move along with the deformation of the ball body; the valve seat is fixedly connected with the elastic sealing piece, the valve seat and the elastic sealing piece are used as a component during installation and are fastened and fixed through the pressing cover, the valve seat is sealed with the valve body through the elastic sealing piece, and when thermal expansion is generated under the high-temperature working condition, the valve seat and the valve body are prevented from being blocked through deformation of the elastic sealing piece.
According to some embodiments of the present invention, the elastic sealing member is a circular metal dome.
According to the utility model discloses a some embodiments, contact position all presss from both sides between metal shrapnel and the gland, between metal shrapnel and the valve body and is equipped with the metal sealing pad, and the gland compresses tightly sealed the metal sealing pad and seals between metal shrapnel in order to realize disk seat and the valve body.
According to some embodiments of the utility model, be provided with the pretension piece between disk seat and the valve body for provide the sealing force between disk seat and the spheroid.
According to some embodiments of the invention, the preload member is a disc spring.
According to some embodiments of the utility model, the valve body includes the main valve body and vice valve body, and vice valve body passes through bolted connection in one side of the main valve body.
According to some embodiments of the utility model, spheroid rotation axis department is connected with valve rod and lower valve rod, go up the valve rod rotate connect in the valve body and with spheroid fixed connection, lower valve rod fixed connection in the valve body and can take place relative rotation with the spheroid.
According to some embodiments of the present invention, the end surface of the valve seat opposite to the ball is a spherical surface concentric with the ball to reduce the resistance when the ball rotates.
According to some embodiments of the utility model, be equipped with the sealing member between disk seat and the spheroid.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic view of an installation structure of an embodiment of the present invention;
fig. 2 is an enlarged view at a in fig. 1.
Reference numerals:
the valve body 100, the flow port 101, the cavity 102, the ball 110, the flow passage 111, the main valve body 120, the sub valve body 130, the upper stem 140, and the lower stem 150;
and a gland 400.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 and 2, the high-temperature metal-sealed ball valve according to an embodiment of the present invention includes a valve body 100, a valve seat 200, an elastic sealing element 300, and a gland 400.
The valve body 100 is provided with a flow port 101 connected with an external pipeline, the middle part of the valve body 100 is provided with a cylindrical cavity 102 coaxial with the flow port 101, a rotatable ball 110 is arranged in the cavity 102, the rotation axis of the ball 110 is vertical to the axis of the valve body 100, the ball 110 is provided with a flow passage 111 coaxial with the flow port 101, and the ball 110 is rotated to change the communication state of the flow passage 111 and the flow port 101, so that the communication and the closing of the ball valve and the external pipeline are controlled.
The valve seats 200 are disposed inside the valve body 100, and a gap is formed between the valve seats 200 and the valve body 100 in the axial direction, the two valve seats 200 are respectively attached to two sides of the ball 110 in a sealing manner, when the ball 110 expands due to heat, the ball 110 pushes the valve seats 200 to move in the gap, and the ball 110 is prevented from being stuck and being unable to move.
Referring to fig. 2, the elastic sealing member 300 has a ring shape, one side of the inner ring or the side close to the inner ring is fixedly coupled to the valve seat 200, the outer ring is in contact with the valve body 100, the elastic sealing member 300 and the valve seat 200 are installed as one unit, and when the valve seat 200 is moved by pressure, the elastic sealing member 300 is deformed by the pressure to maintain the sealing between the valve seat 200 and the valve body 100.
The gland 400 is fixedly connected to the valve body 100 through a fastener, the gland 400 is attached to the elastic sealing member 300, and the elastic sealing member 300 can be compressed to enable the elastic sealing member 300 to be attached to the valve body 100, so that sealing between the valve seat 200 and the valve body 100 is realized, and when thermal expansion is generated under a high-temperature working condition, blocking between the valve seat 200 and the valve body 100 can be prevented through deformation of the elastic sealing member 300.
Referring to fig. 2, in some embodiments of the present invention, the elastic sealing element 300 is a metal elastic sheet, the metal elastic sheet is a sheet-shaped ring structure, and is high temperature resistant, and the metal elastic sheet is welded at one end of the valve seat 200 away from the ball 110.
Preferably, the upper part of the metal elastic sheet is tightly attached to the metal sealing gasket 310, the lower part of the metal elastic sheet is connected with the valve seat 200, the middle part of the metal elastic sheet is not contacted with other structures, and the metal elastic sheet can be fully deformed along with the movement of the valve seat 200, so that the blocking phenomenon is avoided.
Referring to fig. 2, in some embodiments of the present invention, a preload member 210, which may be a disk spring in particular, is disposed between the valve seat 200 and the valve body 100, and the disk spring is pressed after assembly, so that the valve seat 200 is pressed against the ball 110 to realize sealing by applying pressure to the valve seat 200.
Referring to fig. 1, in some embodiments of the present invention, the valve body 100 includes a main valve body 120 and an auxiliary valve body 130, and the auxiliary valve body 130 is connected to one side of the main valve body 120 by bolts, so as to facilitate installation or removal of an internal structure.
In some embodiments of the present invention, the ball 110 is connected to the upper valve rod 140 and the lower valve rod 150 at the rotation axis, the upper valve rod 140 is rotatably connected to the valve body 100 and is fixedly connected to the ball 110, and the ball 110 can be driven to rotate by rotating the upper valve rod 140 so as to control the opening and closing of the ball valve; the lower valve stem 150 is fixedly connected to the valve body 100, and part of the lower valve stem 150 is connected to the ball 110 and can rotate relative to the ball 110; the upper stem 140 and the lower stem 150 cooperate to limit the radial displacement of the ball 110 within the valve body 100.
Referring to fig. 2, in some embodiments of the present invention, the end surface of the valve seat 200 opposite to the ball 110 is a spherical surface concentric with the ball 110 to reduce the resistance to the rotation of the ball 110.
Referring to fig. 2, in some embodiments of the present invention, a sealing member 220 is disposed between the valve seat 200 and the ball 110, and the valve seat 200 is pressed and moved to press the sealing member 220 against the ball 110 to ensure sealing.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example" or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (9)
1. A high temperature metal-sealed ball valve, comprising:
the valve body (100) is internally provided with a ball body (110), the ball body (110) is rotatably connected to the valve body (100), and the connection and the closing of the valve body can be controlled by rotating the ball body (110);
the two valve seats (200) are respectively attached to two sides of the ball body (110) in a sealing manner and can move along with the deformation of the ball body (110);
the inner ring of the annular elastic sealing element (300) is fixedly connected to the valve seat (200), and the outer ring of the annular elastic sealing element is in contact with the valve body (100) and can deform along with the movement of the valve seat (200);
the pressing cover (400) is fixedly connected to the valve body (100) and can press the elastic sealing piece (300) to enable the elastic sealing piece (300) to be tightly attached to the valve body (100) so as to realize sealing between the valve seat (200) and the valve body (100).
2. A high temperature metal-sealed ball valve as claimed in claim 1, wherein: the elastic sealing element (300) is a circular metal elastic sheet.
3. A high temperature metal-sealed ball valve as claimed in claim 2, wherein: metal sealing gaskets (310) are clamped at contact positions between the metal elastic sheet and the pressing cover (400) and between the metal elastic sheet and the valve body (100), and the pressing cover (400) compresses the metal sealing gaskets (310) and the metal elastic sheet to realize sealing between the valve seat (200) and the valve body (100).
4. A high temperature metal-sealed ball valve as claimed in claim 1, wherein: a preload piece (210) is arranged between the valve seat (200) and the valve body (100) and used for providing sealing force between the valve seat (200) and the ball body (110).
5. A high temperature metal-sealed ball valve according to claim 4, wherein: the preload piece (210) is a disc spring.
6. A high temperature metal-sealed ball valve as claimed in claim 1, wherein: the valve body (100) comprises a main valve body (120) and an auxiliary valve body (130), wherein the auxiliary valve body (130) is connected to one side of the main valve body (120) through a bolt.
7. A high temperature metal-sealed ball valve as claimed in claim 1, wherein: the ball body (110) is connected with an upper valve rod (140) and a lower valve rod (150) at the rotating axis position, the upper valve rod (140) is rotatably connected with the valve body (100) and is fixedly connected with the ball body (110), and the lower valve rod (150) is fixedly connected with the valve body (100) and can rotate relative to the ball body (110) so as to realize the positioning of the ball body (110) in the valve body (100).
8. A high temperature metal-sealed ball valve as claimed in claim 1, wherein: the end face of the valve seat (200) opposite to the ball body (110) is a spherical surface concentric with the ball body (110) so as to reduce the resistance when the ball body (110) rotates.
9. A high temperature metal-sealed ball valve as claimed in claim 1, wherein: a sealing element (220) is arranged between the valve seat (200) and the ball body (110).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021063973.7U CN213017821U (en) | 2020-06-11 | 2020-06-11 | High-temperature metal sealing ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021063973.7U CN213017821U (en) | 2020-06-11 | 2020-06-11 | High-temperature metal sealing ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213017821U true CN213017821U (en) | 2021-04-20 |
Family
ID=75493757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021063973.7U Active CN213017821U (en) | 2020-06-11 | 2020-06-11 | High-temperature metal sealing ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213017821U (en) |
-
2020
- 2020-06-11 CN CN202021063973.7U patent/CN213017821U/en active Active
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