CN216242431U - High-sealing high-pressure-resistant ball valve for natural gas pipeline - Google Patents
High-sealing high-pressure-resistant ball valve for natural gas pipeline Download PDFInfo
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- CN216242431U CN216242431U CN202122550529.9U CN202122550529U CN216242431U CN 216242431 U CN216242431 U CN 216242431U CN 202122550529 U CN202122550529 U CN 202122550529U CN 216242431 U CN216242431 U CN 216242431U
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Abstract
The utility model discloses a high-sealing high-pressure-resistant ball valve for a natural gas pipeline, wherein two sides of a valve ball are respectively provided with a pair of hard seal and soft seal, the hard seal is positioned at the inner side of the soft seal, the inner peripheral surface of the hard seal is tightly attached to the outer side of the valve ball, the inner periphery of the soft seal is also provided with a circle of lining ring, the inner peripheral surface of the soft seal and the lining ring are both tightly attached to the outer side of the valve ball, the hard seal consists of a hard seal main body, a graphite ring and a cover ring, the inner periphery of the soft seal is compounded with a plurality of hard raised lines, the inner periphery of the soft seal is provided with a plurality of grooves corresponding to the hard raised lines, the rear end of each hard raised line is inserted into the groove, and two sides of the front end of each hard raised line are compounded with the soft seal into a whole.
Description
Technical Field
The utility model relates to a high-sealing high-pressure-resistant ball valve for a natural gas pipeline.
Background
The high-sealing high-pressure-resistant ball valve for the natural gas pipeline in the prior art generally keeps the sealing performance by closely adhering an extrusion seal and a valve ball, and the ball valve with the structure is very hard to open and close due to large friction force, and the sealing abrasion is also fast, so that the service life of the ball valve is short.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provides a high-sealing high-pressure-resistant ball valve for a natural gas pipeline.
The technical scheme of the utility model is as follows: a high-sealing high-pressure-resistant ball valve for a natural gas pipeline comprises a valve body, wherein a valve cavity is arranged in the valve body, a valve ball is arranged in the valve cavity, valve rods are arranged at the upper end and the lower end of the valve ball, a pair of hard seal and soft seal are respectively arranged at the two sides of the valve ball, the inner peripheral section of each hard seal is in an arc shape corresponding to the outer side of the valve ball, the hard seal is positioned at the inner side of the soft seal, the inner peripheral surface of the hard seal is tightly attached to the outer side of the valve ball, a first step corresponding to the hard seal is further arranged in the valve cavity, the outer side of the hard seal is limited by the first step, the inner peripheral section of each soft seal is also in an arc shape corresponding to the outer side of the valve ball, one end, far away from the valve ball, of the inner periphery of each soft seal is provided with a circle of lining ring, the inner peripheral surface of each soft seal and the lining ring are tightly attached to the outer side of the valve ball, one side, facing the hard seal is abutted to keep the trend of the hard seal to displace towards the valve ball, the valve cavity is also internally provided with a second step corresponding to the soft seal, and the other side of the soft seal is limited by the second step;
the hard seal comprises a hard seal main body, a graphite ring and a cover ring, wherein one side of the hard seal main body, which is far away from the valve ball, is provided with a mounting groove, and the graphite ring is embedded in the mounting groove and limited by the cover ring;
the inner periphery of the soft seal is compounded with a plurality of hard raised lines, each hard raised line is arranged corresponding to the rotating direction of the valve ball, the inner periphery of the soft seal is provided with a plurality of grooves corresponding to the hard raised lines, the rear end of each hard raised line is inserted into the groove, two sides of the front end of each hard raised line are compounded with the soft seal into a whole, the front end of each hard raised line is arc-shaped, and the groove is an arc-shaped groove.
Specifically, the valve body comprises first valve body, second valve body and third valve body, first valve body and third valve body are fixed in the both ends of second valve body respectively, the one end that the second valve body was kept away from to first valve body and third valve body has the connector, the one end that first valve body and third valve body are close to the second valve body has the spacing groove, and this spacing groove forms the second step, two soft sealed card is gone into respectively at the spacing inslot, two hard sealed card is gone into in the both ends of second valve body, the junction of first valve body or third valve body and second valve body forms first step, valve ball and valve rod are connected on the second valve body.
Furthermore, the outer sides of the first valve body, the second valve body and the third valve body are provided with corresponding connecting parts, the connecting parts are fixed through bolts and nuts, the periphery of the soft seal is provided with a circle of convex edges, two ends of the second valve body are provided with corresponding steps, and the convex edges are positioned in the steps and clamp the connecting part of the second valve body and the first valve body or the third valve body.
Specifically, the cover ring is fixed to the hard seal body by a plurality of fixing screws.
The utility model has the beneficial effects that: by improving the soft and hard sealing structure in the ball valve, the utility model makes the valve ball easier to open and close on the premise of keeping the performance of the ball valve, and prolongs the service life of the whole ball valve.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the construction of the hard seal of the present invention;
FIG. 3 is a partial cross-sectional view of the hard seal of the present invention;
FIG. 4 is a schematic view of the construction of the soft seal of the present invention;
fig. 5 is a partial cross-sectional view of the soft seal of the present invention.
Detailed Description
The technical scheme of the utility model is further specifically described by the following embodiments and the accompanying drawings.
As shown in fig. 1, the high-sealing high-pressure-resistant ball valve for the natural gas pipeline comprises a valve body, wherein a valve cavity is formed in the valve body, a valve ball 1 is arranged in the valve cavity, and valve rods 2 are arranged at the upper end and the lower end of the valve ball 1;
a pair of hard seal 3 and soft seal 4 are respectively arranged on two sides of the valve ball 1, the inner peripheral section of the hard seal 3 is arc-shaped corresponding to the outer side of the valve ball 1, the hard seal 3 is positioned on the inner side of the soft seal 4, the inner peripheral surface of the hard seal 3 is tightly attached to the outer side of the valve ball 1, a first step 5 corresponding to the hard seal 3 is further arranged in the valve cavity, and the outer side of the hard seal 3 is limited by the first step 5 so as to avoid the hard seal 3 from displacing; the section of the inner periphery of the soft seal 4 is also arc-shaped corresponding to the outer side of the valve ball 1, one end of the inner periphery of the soft seal 4, which is far away from the valve ball 1, is provided with a circle of lining ring 6, the inner peripheral surface of the soft seal 4 and the lining ring 6 are both arranged in a manner of being tightly attached to the outer side of the valve ball 1, one side of the soft seal 4, which faces the hard seal 3, is abutted against the hard seal 3, so that the trend that the hard seal 3 is displaced towards the valve ball 1 is kept, and the sealing effect is ensured; a second step 7 corresponding to the soft seal 4 is arranged in the valve cavity, and the other side of the soft seal 4 is limited by the second step 7;
as shown in fig. 2 and 3, the hard seal 3 is composed of a hard seal body 8, a graphite ring 9 and a cover ring 10, wherein one side of the hard seal body 8, which is far away from the valve ball 1, is provided with a mounting groove, the graphite ring 9 is embedded in the mounting groove and limited by the cover ring 10, and the inner peripheries of the hard seal body 8, the graphite ring 9 and the cover ring 10 form a smooth horn hole;
in the structure, the graphite ring 9 has further sealing and self-lubricating effects, reduces abrasion between the valve ball 1 and the hard seal 3 due to friction, ensures the sealing property and prolongs the service life of the valve;
specifically, the cover ring 10 is fixed to the hard seal body 8 by a plurality of fixing screws;
as shown in fig. 4 and 5, a plurality of hard protruding strips 11 are compounded on the inner periphery of the soft seal 4, each hard protruding strip 11 is arranged corresponding to the rotation direction of the valve ball 1, a plurality of grooves 12 corresponding to the hard protruding strips 11 are formed on the inner periphery of the soft seal 4, the rear end of each hard protruding strip 11 is inserted into the groove 12, both sides of the front end of each hard protruding strip 11 are compounded with the soft seal 4 into a whole, the front end of each hard protruding strip 11 is arc-shaped, and the groove 12 is an arc-shaped groove;
in the structure, the soft seal 4 is elastically connected with the hard raised line 11, so that the front end of the hard raised line 11 is abutted against the outer side of the valve ball 1, the hard raised line 11 is abutted against the valve ball 1 and then returns into the retraction groove 12 under the action of pressure, the friction between the valve ball 1 and the soft seal 4 during rotation can be reduced to a certain extent, and the hard raised line 11 divides the soft seal 4 into a plurality of sealing areas, so that the sealing reliability of the soft seal 4 can be effectively improved; on the other hand, the hard raised lines 11 play a role of certain reinforcing strips, so that the rigidity of the soft seal 4 can be improved, and the soft seal 4 is prevented from deforming under high pressure;
specifically, the hard convex strips 11 are engineering plastic convex strips;
in another embodiment, the valve body is composed of a first valve body 13, a second valve body 14 and a third valve body 15, the first valve body 13 and the third valve body 15 are respectively fixed at two ends of the second valve body 14, one end of the first valve body 13 and one end of the third valve body 15 far away from the second valve body 14 are provided with a connecting port 16, one end of the first valve body 13 and one end of the third valve body 15 close to the second valve body 14 are provided with a limiting groove, the limiting groove forms a second step 7, the two soft seals 4 are respectively clamped in the limiting grooves, the two hard seals 3 are clamped in two ends of the second valve body 14, the joint of the first valve body 13 or the third valve body 15 and the second valve body 14 forms a first step 5, and the valve ball 1 and the valve rod 2 are connected on the second valve body 14; the structure is beneficial to the assembly of the whole ball valve, so that the assembly of the ball valve is simpler;
in another embodiment, the first valve body 13, the second valve body 14 and the third valve body 15 have corresponding connecting portions 17 on the outer sides thereof, the connecting portions 17 are fixed by bolts and nuts, the soft seal 4 has a ring of convex edge on the outer periphery thereof, the second valve body 14 has corresponding steps at both ends thereof, and the convex edge is located in the steps and clamps the joint of the second valve body 14 and the first valve body 13 or the third valve body 15 to seal the joint.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (4)
1. The utility model provides a natural gas line is with high pressure ball valve of sealing up, includes the valve body, the valve pocket has in the valve body, be equipped with the valve ball in the valve pocket, the upper and lower both ends of valve ball are equipped with valve rod, its characterized in that: the valve ball is characterized in that a pair of hard seal and soft seal are respectively arranged on two sides of the valve ball, the inner peripheral section of the hard seal is in an arc shape corresponding to the outer side of the valve ball, the hard seal is positioned on the inner side of the soft seal, the inner peripheral surface of the hard seal is tightly attached to the outer side of the valve ball, a first step corresponding to the hard seal is further arranged in the valve cavity, the outer side of the hard seal is limited by the first step, the inner peripheral section of the soft seal is also in an arc shape corresponding to the outer side of the valve ball, one end, away from the valve ball, of the inner periphery of the soft seal is provided with a circle of liner ring, the inner peripheral surface and the liner ring of the soft seal are both tightly attached to the outer side of the valve ball, one side, facing the hard seal, of the soft seal is abutted to the hard seal so as to keep the trend that the hard seal is displaced towards the valve ball, a second step corresponding to the soft seal is further arranged in the valve cavity, and the other side of the soft seal is limited by the second step;
the hard seal comprises a hard seal main body, a graphite ring and a cover ring, wherein one side of the hard seal main body, which is far away from the valve ball, is provided with a mounting groove, and the graphite ring is embedded in the mounting groove and limited by the cover ring;
the inner periphery of the soft seal is compounded with a plurality of hard raised lines, each hard raised line is arranged corresponding to the rotating direction of the valve ball, the inner periphery of the soft seal is provided with a plurality of grooves corresponding to the hard raised lines, the rear end of each hard raised line is inserted into the groove, two sides of the front end of each hard raised line are compounded with the soft seal into a whole, the front end of each hard raised line is arc-shaped, and the groove is an arc-shaped groove.
2. The high-sealing high-pressure-resistant ball valve for the natural gas pipeline according to claim 1, characterized in that: the valve body comprises first valve body, second valve body and third valve body, first valve body and third valve body are fixed in the both ends of second valve body respectively, the one end that the second valve body was kept away from to first valve body and third valve body has the connector, the one end that first valve body and third valve body are close to the second valve body has the spacing groove, and this spacing groove forms the second step, two soft sealed card is gone into respectively at the spacing inslot, two hard sealed card is gone into in the both ends of second valve body, the junction of first valve body or third valve body and second valve body forms first step, valve ball and valve rod are connected on the second valve body.
3. The high-sealing high-pressure-resistant ball valve for the natural gas pipeline according to claim 2, characterized in that: the outer sides of the first valve body, the second valve body and the third valve body are provided with corresponding connecting parts, the connecting parts are fixed through bolts and nuts, the periphery of the soft seal is provided with a circle of convex edges, two ends of the second valve body are provided with corresponding steps, and the convex edges are positioned in the steps and clamp the connecting part of the second valve body and the first valve body or the third valve body.
4. The high-sealing high-pressure-resistant ball valve for the natural gas pipeline according to claim 1, characterized in that: the cover ring is fixed with the hard seal main body through a plurality of fixing screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122550529.9U CN216242431U (en) | 2021-10-22 | 2021-10-22 | High-sealing high-pressure-resistant ball valve for natural gas pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122550529.9U CN216242431U (en) | 2021-10-22 | 2021-10-22 | High-sealing high-pressure-resistant ball valve for natural gas pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216242431U true CN216242431U (en) | 2022-04-08 |
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ID=80989892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122550529.9U Active CN216242431U (en) | 2021-10-22 | 2021-10-22 | High-sealing high-pressure-resistant ball valve for natural gas pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216242431U (en) |
-
2021
- 2021-10-22 CN CN202122550529.9U patent/CN216242431U/en active Active
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