CN212407648U - Hard seal ball valve seat structure - Google Patents
Hard seal ball valve seat structure Download PDFInfo
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- CN212407648U CN212407648U CN202020713111.8U CN202020713111U CN212407648U CN 212407648 U CN212407648 U CN 212407648U CN 202020713111 U CN202020713111 U CN 202020713111U CN 212407648 U CN212407648 U CN 212407648U
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- valve seat
- sealing element
- mounting groove
- ball valve
- hard seal
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Abstract
The utility model discloses a hard seal ball valve seating structure, include the valve body and set up in inside main mounting groove and the spheroid of valve body, main mounting groove internalization is provided with towards spheroid reciprocating motion and cooperation spheroid and forms sealed disk seat, be equipped with the drive disk seat between main mounting groove and the disk seat and support tightly in spheroidal spring, be equipped with the elastic sealing element who restricts fluid medium entering main mounting groove and do not influence disk seat reciprocating motion between disk seat and the valve body. The utility model has the advantages of it is following and effect: the utility model discloses the leakproofness is reliable, zero leaks, more lasting, only adopts an elastic diaphragm sealed, does not have other sealing members, practices thrift the cost.
Description
Technical Field
The utility model relates to a valve, in particular to ball valve seating structure sealed firmly.
Background
In recent years, the Chinese power industry and LNG clean energy are developed at a high speed, wherein thermal power generation is the main mode and accounts for about 73.32%. In a thermal power generating unit, a plurality of process links need pipelines to convey media which contain a large amount of solid particles, are high in viscosity and are easy to solidify, and the media can easily enter, deposit and solidify in gaps of valves.
And conventional fixed ball valve disk seat among the prior art because the relation of structure, for the space of disk seat activity, must have the clearance that can supply the disk seat to carry out the activity, the existence in this clearance leads to the medium easily to deposit, solidify in the clearance and squeeze the clearance space of taking up the activity of disk seat gradually to take place the unable activity of disk seat and withstand the spheroid phenomenon, lead to the valve card to die can't close or the too big unable action of moment of torsion and finally lead to the valve to overhaul, produce the line and shut down, bring huge influence for the economy of enterprise. Meanwhile, the environmental protection requirement is improved, LNG clean energy is rapidly developed, more valves for ultralow temperature working conditions are required for the wide establishment of a receiving station, the existing main ultralow temperature valves are imported or provided by part of domestic manufacturers, but sealing elements are imported, so that the ultralow temperature valves are expensive and long in period.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a ball valve disk seat structure sealed firmly, this take elastic diaphragm's ball valve disk seat mounting structure can adapt to wider use operating mode, sealed reliable and low in production cost.
The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a hard seal ball valve seating structure, includes the valve body and sets up in inside main mounting groove and the spheroid of valve body, main mounting groove internalization is provided with towards spheroid reciprocating motion and cooperates the spheroid to form sealed disk seat, be equipped with the drive disk seat between main mounting groove and the disk seat and support tightly in spheroidal spring, be equipped with the elastic sealing element who restricts fluid medium entering main mounting groove and do not influence disk seat reciprocating motion between disk seat and the valve body.
Through adopting above-mentioned technical scheme, elastic sealing element seals the clearance that forms between disk seat and the main mounting groove two, makes in fluid medium can not get into the clearance, and elastic sealing element can provide the elastic deformation that the disk seat motion needs, can use for a long time and not receive the restriction of temperature under the change of temperature by a wide margin, and application range is wider. The valve seat and the main mounting groove are more reliably sealed, and the phenomenon that the valve is too large in torque and even blocked is prevented. The sealing structure adopting only one elastic sealing element is more convenient to install and has low cost; and the spring provides initial sealing force for the valve seat, so that the sealing surface of the valve seat can be well contacted with the ball to seal under low pressure.
Further setting the following steps: the elastic sealing element is connected to one end, back to the ball body, of the valve seat and the inner wall of the valve body, and the shape of the elastic sealing element comprises a circular ring shape surrounding the circle center of the valve seat.
By adopting the technical scheme, one end face of the valve seat, which is back to the ball body, is a contact surface which is contacted with the fluid medium, the elastic sealing element is arranged at the position, and the fluid medium is blocked from the source, so that the optimal sealing effect is achieved; and this position does not affect the normal movement of the valve seat.
Further setting the following steps: the cross-sectional shape of the elastomeric seal includes a wave shape.
By adopting the technical scheme, the wavy elastic sealing element can provide larger elastic deformation amount for the valve seat to move.
Further setting the following steps: the elastomeric seal includes an elastomeric diaphragm.
By adopting the technical scheme, the elastic membrane is made of high-elasticity metal, can be processed without special process and special equipment, saves the processing cost and improves the processing efficiency.
Further setting the following steps: and a sealing dustproof component is arranged between the main mounting groove and the valve seat and close to the position of the valve seat facing to one end face of the ball body, and the spring is positioned between the sealing dustproof component and the elastic sealing element.
Through adopting above-mentioned technical scheme, sealed dustproof component can block that inner chamber particulate matter gets into main mounting groove to guarantee the normal motion of spring.
Further setting the following steps: the sealing dustproof component sequentially comprises a first dustproof graphite ring, a support ring and a second dustproof graphite ring along the movement direction of the valve seat.
Through adopting above-mentioned technical scheme, graphite circle itself has self-lubricating effect, the moment of torsion is low, high temperature resistant, advantage such as dustproof effectual.
Further setting the following steps: the disk seat is equipped with the installation annular that supplies the installation of elastic sealing element back to spheroidal one end face, the periphery wall of installation annular communicates with the periphery wall of disk seat.
By adopting the technical scheme, the elastic sealing element is positioned and installed by the installation ring groove, so that the installation operation of the elastic sealing element is more convenient; and the elastic sealing element is more convenient to be connected with the valve body in a way of communicating with the peripheral wall of the valve seat.
Further setting the following steps: the inner peripheral wall of the elastic sealing element is welded and sealed with the inner peripheral wall of the mounting ring groove, and the outer peripheral wall of the elastic sealing element is welded and sealed with the inner wall of the valve body.
By adopting the technical scheme, the welding and sealing mode can meet the zero leakage requirement and the sufficient connection strength.
Further setting the following steps: weld grooves are formed between the elastic sealing element and the mounting ring groove and between the elastic sealing element and the inner wall of the valve body.
By adopting the technical scheme, the surfaces of the joints of the welding grooves are in smooth transition due to the arrangement of the welding grooves, so that the granular medium and the condensed medium have no stress points, and the valve seat movement is not influenced by the solidification.
To sum up, the utility model discloses following beneficial effect has: the utility model discloses the leakproofness is reliable, zero leaks, more lasting, only adopts an elastic diaphragm sealed, does not have other sealing members, practices thrift the cost.
Drawings
FIG. 1 is a schematic partial structure diagram of an embodiment;
FIG. 2 is an enlarged view of portion A of FIG. 1;
fig. 3 is a cross-sectional view of an elastomeric seal of an embodiment.
In the figure: 1. a valve body; 2. a main mounting groove; 3. a sphere; 4. a valve seat; 5. a spring; 6. an elastomeric seal; 7. a sealing dust-proof member; 71. a first dustproof graphite ring; 72. a support ring; 73. a second dustproof graphite ring; 8. mounting a ring groove; 9. and (6) welding a groove.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 to 3, a hard seal ball valve seat structure includes a valve body 1, and a main mounting groove 2 and a ball body 3 disposed inside the valve body 1, wherein a valve seat 4 capable of reciprocating toward the ball body 3 and forming a seal by cooperating with the ball body 3 is movably disposed in the main mounting groove 2. Be equipped with between main mounting groove 2 and the disk seat 4 that drive disk seat 4 supports tightly in spheroid 3 spring 5, disk seat 4 back to spheroid 3 one end face seted up around in disk seat 4 circular shape ring shape installation annular 8, the periphery wall of installation annular 8 and disk seat 4's periphery wall intercommunication.
An annular elastic sealing element 6 is arranged in the mounting ring groove 8, the elastic sealing element 6 and the mounting ring groove 8 are coaxially arranged, the cross section of the elastic sealing element 6 is wavy, the elastic sealing element 6 is an elastic membrane, and the elastic membrane is made of high-elasticity metal. The inner peripheral wall of the elastic membrane is welded and sealed with the inner peripheral wall of the mounting ring groove 8, and the outer peripheral wall of the elastic membrane is welded and sealed with the inner wall of the valve body 1; weld grooves 9 are formed between the elastic diaphragm and the mounting ring groove 8 and between the elastic diaphragm and the inner wall of the valve body 1.
A sealing dustproof component 7 is arranged between the main installation groove 2 and the valve seat 4 close to the position of the valve seat 4 facing one end face of the ball body 3, and the spring 5 is arranged between the sealing dustproof component 7 and the elastic diaphragm. The sealing dust-proof member 7 includes a first dust-proof graphite ring 71, a support ring 72, and a second dust-proof graphite ring 73 in this order along the movement direction of the valve seat 4. The important protection of the present application is the installation structure of the valve seat 4 in the valve body 1, and the structure of the ball valve itself is not within the protection scope of the present application and will not be elaborated on herein.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.
Claims (9)
1. The utility model provides a hard seal ball valve seating structure, includes valve body (1) and sets up in inside main mounting groove (2) and spheroid (3) of valve body (1), main mounting groove (2) internalization is provided with towards spheroid (3) reciprocating motion and cooperation spheroid (3) and forms sealed disk seat (4), its characterized in that: a spring (5) for driving the valve seat (4) to tightly abut against the ball body (3) is arranged between the main mounting groove (2) and the valve seat (4), and an elastic sealing element (6) for limiting a fluid medium to enter the main mounting groove (2) and not influencing the reciprocating motion of the valve seat (4) is arranged between the valve seat (4) and the valve body (1).
2. A hard seal ball valve seat construction as defined in claim 1 wherein: the elastic sealing element (6) is connected to one end, back to the ball body (3), of the valve seat (4) and the inner wall of the valve body (1), and the shape of the elastic sealing element (6) comprises a circular ring surrounding the circle center of the valve seat (4).
3. A hard seal ball valve seat construction as defined in claim 2 wherein: the cross-sectional shape of the elastic seal (6) comprises a wave shape.
4. A hard seal ball valve seat construction as defined in claim 1 wherein: the elastic seal (6) comprises an elastic membrane.
5. A hard seal ball valve seat construction as defined in claim 2 wherein: the ball valve is characterized in that a sealing dustproof member (7) is arranged between the main mounting groove (2) and the valve seat (4) close to the position, facing the end face of the ball body (3), of the valve seat (4), and the spring (5) is located between the sealing dustproof member (7) and the elastic sealing element (6).
6. A hard seal ball valve seating arrangement according to claim 5, wherein: the sealing dustproof component (7) sequentially comprises a first dustproof graphite ring (71), a support ring (72) and a second dustproof graphite ring (73) along the movement direction of the valve seat (4).
7. A hard seal ball valve seat construction as defined in claim 2 wherein: the one end face of disk seat (4) back to spheroid (3) is equipped with installation annular (8) that supply elastic sealing member (6) to install, the periphery wall of installation annular (8) and the periphery wall intercommunication of disk seat (4).
8. A hard seal ball valve seat construction as defined in claim 7 wherein: the inner peripheral wall of the elastic sealing element (6) is in welded seal with the inner peripheral wall of the mounting ring groove (8), and the outer peripheral wall is in welded seal with the inner wall of the valve body (1).
9. A hard seal ball valve seat construction as defined in claim 8 wherein: and welding grooves (9) are formed between the elastic sealing element (6) and the mounting ring groove (8) and between the elastic sealing element (6) and the inner wall of the valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020713111.8U CN212407648U (en) | 2020-04-30 | 2020-04-30 | Hard seal ball valve seat structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020713111.8U CN212407648U (en) | 2020-04-30 | 2020-04-30 | Hard seal ball valve seat structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212407648U true CN212407648U (en) | 2021-01-26 |
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ID=74375603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020713111.8U Active CN212407648U (en) | 2020-04-30 | 2020-04-30 | Hard seal ball valve seat structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212407648U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4234993A1 (en) | 2022-02-24 | 2023-08-30 | Werner Hartmann GmbH & Co. KG | Shut-off device with metallic seal |
-
2020
- 2020-04-30 CN CN202020713111.8U patent/CN212407648U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4234993A1 (en) | 2022-02-24 | 2023-08-30 | Werner Hartmann GmbH & Co. KG | Shut-off device with metallic seal |
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