CN215293693U - High-temperature metal hard seal fixed ball valve seat structure - Google Patents
High-temperature metal hard seal fixed ball valve seat structure Download PDFInfo
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- CN215293693U CN215293693U CN202121659715.XU CN202121659715U CN215293693U CN 215293693 U CN215293693 U CN 215293693U CN 202121659715 U CN202121659715 U CN 202121659715U CN 215293693 U CN215293693 U CN 215293693U
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- valve seat
- valve body
- ladder
- temperature metal
- ball valve
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Abstract
The utility model relates to a fixed ball valve seating structure is sealed firmly to high temperature metal, including valve body, disk seat and the spheroid that the assembly is in the same place, disk seat whole body is provided with first ladder and the second ladder that the external diameter steadilys decrease along the axial, has set gradually wedge graphite filler, toper graphite filler and trapezoidal graphite filler from forward to backward between first ladder and the valve body, is provided with the pressure material subassembly that is used for compressing tightly trapezoidal graphite filler between second ladder and the valve body. This high temperature metal seals fixed ball valve disk seat structure reasonable in design firmly, through the combined action of multichannel sealing, when the valve pressurized, sealed effect is better, is difficult for appearing revealing the problem.
Description
Technical Field
The utility model relates to a ball valve technical field, in particular to fixed ball valve disk seat structure is sealed firmly to high temperature metal.
Background
The metal hard sealing valve is mainly suitable for industries such as petroleum, chemical engineering, metallurgy, water and electricity, and the sealing of the metal hard sealing valve is mainly completed by graphite at a valve seat and a sealing surface of the valve seat.
At present, most of high-temperature metal hard seal fixed ball valves are mainly sealed by a layer of wedge-shaped graphite packing, and the design is single because of graphite, so that once failure easily causes leakage after a valve switch, and loss is caused.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: in order to overcome the defects of the prior art, the high-temperature metal hard seal fixed ball valve seat structure with good sealing effect is provided.
In order to achieve the above technical effect, the utility model discloses a technical scheme is: the utility model provides a high temperature metal seals fixed ball valve seat structure firmly, is including valve body, disk seat and the spheroid that the assembly is in the same place, disk seat whole body is provided with first ladder and the second ladder that the external diameter degressive along the axial, wedge graphite filler, toper graphite filler and trapezoidal graphite filler have set gradually from the front to the back between first ladder and the valve body, be provided with the pressure material subassembly that is used for compressing tightly trapezoidal graphite filler between second ladder and the valve body.
Preferably, the wedge-shaped graphite filler is a 30 ° wedge-shaped graphite filler.
Preferably, the conical graphite filler is a 45-degree conical graphite filler, and a plurality of conical graphite fillers are arranged side by side and sleeved on the first step.
Preferably, the material pressing assembly comprises a pressing ring sleeved on the second step and an elastic piece arranged between the pressing ring and the valve body, the axial cross section of the pressing ring is of a Z-shaped structure, and the front end of the pressing ring is arranged between the first step and the valve body and is abutted against the trapezoidal graphite filler.
Preferably, the elastic member includes, but is not limited to, a wave spring.
Preferably, the front end of the valve seat is provided with a scraper matched with the ball in a sealing manner, and a crystallization-preventing port is formed between the rear end of the valve seat and the valve body.
Compared with the prior art, the beneficial effects of the utility model are that: this high temperature metal seals fixed ball valve disk seat structure reasonable in design firmly, through the combined action of multichannel sealing, when the valve pressurized, sealed effect is better, is difficult for appearing revealing the problem.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the embodiments, and it is obvious that the described embodiments are some embodiments, not all embodiments of the present invention.
Drawings
Fig. 1 is the schematic diagram of the high-temperature metal hard seal fixed ball valve seat structure of the present invention.
The reference numbers and corresponding designations in the drawings are: 1. the valve comprises a valve body, 2 parts of a valve seat, 21 parts of a first step, 22 parts of a second step, 23 parts of a scraper, 3 parts of a ball, 4 parts of wedge-shaped graphite filler, 5 parts of conical graphite filler, 6 parts of the trapezoid-shaped graphite filler, 7 parts of a pressure ring, 8 parts of an elastic piece and 9 parts of an anti-crystallization port.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
As shown in fig. 1, the embodiment provides a high-temperature metal hard seal fixed ball valve seat 2 structure, which includes a valve body 1, a valve seat 2, and a ball body 3 assembled together, a first step 21 and a second step 22 with decreasing outer diameters are axially arranged around the valve seat 2, a wedge-shaped graphite filler 4, a conical graphite filler 5, and a trapezoidal graphite filler 6 are sequentially arranged between the first step 21 and the valve body 1 from front to back, preferably, the wedge-shaped graphite filler 4 is a 30 ° wedge-shaped graphite filler, the conical graphite filler 5 is a 45 ° conical graphite filler, and a plurality of conical graphite fillers 5 are arranged and are sleeved on the first step 21 side by side; a material pressing component for pressing the trapezoidal graphite filler 6 is arranged between the second step 22 and the valve body 1.
The wedge-shaped graphite packing 4, the conical graphite packing 5 and the trapezoidal graphite packing 6 jointly form a sealing structure, the sealing structure is suitable for high-temperature working conditions, and can generate radial deformation under the action of pretightening force of the material pressing assembly so as to realize the sealing connection of the first step 21 and the valve body 1. In the embodiment, a 30-degree wedge-shaped graphite filler is selected as a first seal, and due to the special structure of the wedge-shaped graphite filler 4, under the action of pretightening force and medium pressure, the wedge-shaped graphite filler 4 is extruded, and two conical surfaces at the front end are tightly attached to the valve seat 2 to generate enough sealing force to block leakage between the valve body 1 and the valve seat 2; four 45-degree conical graphite fillers are selected as a second seal, and are extruded and deformed to be used for sealing the valve body 1 and the valve seat 2; trapezoidal graphite filler 6 is selected as the third seal, and trapezoidal graphite filler 6 is higher in whole compactness, so the required compression amount of the sealing effect that it produced is littleer, in addition, the conical surface at the front end of trapezoidal graphite filler 6 can guide conical graphite filler 5 to deform in order to assist in sealing.
The material pressing assembly comprises a pressing ring 7 sleeved on the second step 22 and an elastic piece 8 arranged between the pressing ring 7 and the valve body 1, the axial section of the pressing ring 7 is of a Z-shaped structure, and the front end of the pressing ring is arranged between the first step 21 and the valve body 1 and is abutted against the trapezoidal graphite filler 6.
The elastic piece 8 supplies pretightening force to the wedge-shaped graphite filler 4, the conical graphite filler 5 and the trapezoidal graphite filler 6 through the compression ring 7. The elastic member 8 may be an elastic element such as a spring or a wave spring, and in this embodiment, the elastic member 8 is preferably a disc spring because the space between the pressing ring 7 and the valve body 1 is small.
The front end of the valve seat 2 is provided with a scraper 23 which is matched with the ball 3 in a sealing way, and a crystallization-proof port 9 is formed between the rear end of the valve seat 2 and the valve body 1. The crystallization-preventing port 9 can prevent the medium from crystallizing at the position of the elastic member 8 to affect the sealing effect.
The present invention is not limited to the above specific embodiments, and for those skilled in the art, the above conception can be used without any creative work, and all the changes made fall within the protection scope of the present invention.
Claims (6)
1. The utility model provides a high temperature metal seals fixed ball valve seating structure firmly, is including valve body (1), disk seat (2) and spheroid (3) that the assembly is in the same place, its characterized in that, disk seat (2) whole body is provided with first ladder (21) and second ladder (22) that the external diameter descends progressively along the axial, wedge graphite filler (4), toper graphite filler (5) and trapezoidal graphite filler (6) have set gradually from the front to the back between first ladder (21) and valve body (1), be provided with the material subassembly of pressing that is used for compressing tightly trapezoidal graphite filler (6) between second ladder (22) and valve body (1).
2. A high temperature metal hard seal fixed ball valve seat structure as claimed in claim 1, characterized in that the wedge shaped graphite packing (4) is 30 ° wedge shaped graphite packing.
3. The high-temperature metal hard seal fixed ball valve seat structure according to claim 1 or 2, wherein the conical graphite packing (5) is a 45-degree conical graphite packing, and a plurality of conical graphite packings (5) are arranged side by side on the first step (21).
4. The high-temperature metal hard seal fixed ball valve seat structure according to claim 1, wherein the swaging assembly comprises a pressing ring (7) sleeved on the second step (22) and an elastic piece (8) arranged between the pressing ring (7) and the valve body (1), the axial section of the pressing ring (7) is of a Z-shaped structure, and the front end of the pressing ring is arranged between the first step (21) and the valve body (1) and abuts against the trapezoidal graphite packing (6).
5. A hot metal hard seal seated ball valve seat structure as claimed in claim 4, characterized in that said resilient member (8) includes but is not limited to a wave spring.
6. The high-temperature metal hard seal fixed ball valve seat structure as claimed in claim 1, wherein the front end of the valve seat (2) is provided with a scraper (23) which is in sealing fit with the ball body (3), and a crystallization-preventing opening (9) is formed between the rear end of the valve seat (2) and the valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121659715.XU CN215293693U (en) | 2021-07-21 | 2021-07-21 | High-temperature metal hard seal fixed ball valve seat structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121659715.XU CN215293693U (en) | 2021-07-21 | 2021-07-21 | High-temperature metal hard seal fixed ball valve seat structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215293693U true CN215293693U (en) | 2021-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121659715.XU Active CN215293693U (en) | 2021-07-21 | 2021-07-21 | High-temperature metal hard seal fixed ball valve seat structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215293693U (en) |
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2021
- 2021-07-21 CN CN202121659715.XU patent/CN215293693U/en active Active
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