CN112797179B - Top-mounted ball valve for thermal power ultra-supercritical - Google Patents
Top-mounted ball valve for thermal power ultra-supercritical Download PDFInfo
- Publication number
- CN112797179B CN112797179B CN202110069577.8A CN202110069577A CN112797179B CN 112797179 B CN112797179 B CN 112797179B CN 202110069577 A CN202110069577 A CN 202110069577A CN 112797179 B CN112797179 B CN 112797179B
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- valve
- valve body
- valve rod
- sealing
- rod
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0626—Easy mounting or dismounting means
- F16K5/0636—Easy mounting or dismounting means the spherical plug being insertable from the top of the housing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
- F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0647—Spindles or actuating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0663—Packings
- F16K5/0694—Spindle sealings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
- F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
- F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
- F16K5/201—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces with the housing or parts of the housing mechanically pressing the seal against the plug
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
The invention discloses a top-mounted ball valve for thermal power ultra-supercritical, which comprises a valve body, a valve cover arranged on the valve body, a ball body, a left valve seat and a right valve seat, wherein the ball body, the left valve seat and the right valve seat are positioned in the valve body, the valve cover is provided with a valve rod which is inserted into the valve body and is in inserted connection with the ball body for transmission, a limiting groove is arranged in the valve body, a limiting component for limiting the valve rod to be separated from the valve body is arranged between the limiting groove and the valve rod, a first sealing filler is arranged between the valve rod and the valve body, a filler gland is arranged above the first sealing filler, the valve cover is provided with an elastic part for driving the filler gland to extrude the first sealing filler, a sealing ring is arranged between the right valve seat and the valve body, a flat gasket is arranged between the left valve seat and the valve body, and a second disc spring for driving the left valve seat to move towards the ball body is arranged between the flat gasket and the left valve seat. The invention has the following advantages and effects: the valve rod of the invention is integrally prevented from flying out, the stuffing box forms self-locking and can meet the standard pressure self-sealing requirement.
Description
Technical Field
The invention relates to a valve, in particular to a top-mounted ball valve for thermal power ultra-supercritical.
Background
The valve whose opening and closing piece (ball) is driven by valve rod and can make rotary motion around the axis of ball valve also can be used for regulating and controlling fluid. Ultra-supercritical ball valves in thermal power need to be introduced at present. The ball valve is divided into: pneumatic ball valves, electric ball valves, manual ball valves.
The structure between spheroid and the valve rod is the grafting transmission on the current ball valve, and comes from the valve gap to the spacing fixed of valve rod. When the ball valve is disassembled for maintenance, a worker opens the valve cover, the valve rod loses the limiting force applied by the valve cover, and the valve rod flies out under the action of pressure in the valve cavity, so that great potential safety hazards exist. And the existing valves above cl4500 do not adopt pressure self-sealing structures, so that potential safety hazards exist.
Disclosure of Invention
The invention aims to provide a top-mounted ball valve for thermal power ultra-supercritical, which can prevent a valve rod from integrally flying out and adopts a pressure self-sealing structure.
The technical purpose of the invention is realized by the following technical scheme: the utility model provides a top mounted ball valve for super supercritical of thermoelectricity, includes the valve body, sets up in the valve gap of valve body and be located inside spheroid, left disk seat and the right disk seat of valve body, be equipped with on the valve gap and insert and establish into the valve body and peg graft driven valve rod with the spheroid, be equipped with the spacing groove in the valve body, be equipped with the spacing subassembly that is used for restricting the valve rod and breaks away from the valve body between spacing groove and the valve rod, be equipped with first sealing filler between valve rod and the valve body, be located first sealing filler top is equipped with gland, be equipped with the elastic component of the first sealing filler of drive gland extrusion on the valve gap, be equipped with the sealing washer between right disk seat and the valve body, this has the plain washer between left disk seat and the valve body, be equipped with the second dish spring of the motion of the left disk seat of drive towards the spheroid between plain washer and the left disk seat.
Through adopting above-mentioned technical scheme, spacing subassembly cooperation spacing groove is used for restricting the valve rod and breaks away from the valve body to be used for preventing the valve rod departure, avoid the potential safety hazard of existence. The elastic piece drives the first sealing filler to apply a permanent driving force through the packing gland to achieve the sealing requirement. The setting of sealing washer guarantees the leakproofness between right disk seat and the valve body, realizes the self sealss between left disk seat and the spheroid through the left disk seat cooperation spheroid of second dish spring drive to reach better sealed effect.
Further setting as follows: the limiting assembly comprises a limiting convex ring arranged on the valve rod and four open rings arranged in the limiting groove and abutted against the upper part of the limiting convex ring.
Through adopting above-mentioned technical scheme, spacing groove, spacing bulge loop and four ring opening three's cooperation is used for restricting the valve rod and moves towards valve gap one side, prevents that the valve rod from breaking away from the valve body to realize the holistic departure of preventing of valve rod.
Further setting as follows: an inner part is arranged between the valve body and the valve rod and above the four open rings, a second sealing element is arranged between the inner part and the valve body, and a stuffing box is arranged above the second sealing element.
Through adopting above-mentioned technical scheme, when the pressure in the valve body increases, pressure drive internals moves and extrudees the second sealing member towards the stuffing box, and the higher leakproofness of pressure is better to realize self sealedly.
Further setting the following steps: the stuffing box is in threaded connection with the valve body, and the thin nut for locking the stuffing box is connected with the inner thread of the valve body.
By adopting the technical scheme, the thin nut connected with the valve body in a threaded manner is used for locking the stuffing box connected with the valve body in a threaded manner, so that the valve is prevented from being self-locked due to the fact that the threads of the stuffing box are loosened in the working process, and the sealing stability is ensured.
Further setting the following steps: the periphery wall and the valve body threaded connection of packing box, first sealed packing set up between packing box internal perisporium and valve rod, first sealed packing is including weaving graphite ring, graphite ring and spacer ring.
By adopting the technical scheme, the full sealing of the assembly gap is realized by the arrangement, a better sealing effect is achieved, and the graphite ring has the characteristics of high temperature resistance, corrosion resistance and wear resistance, so that the best sealing effect can be achieved.
Further setting the following steps: the inner part is extended with an extension section for limiting the four-open ring to be separated from the limit groove.
Through adopting above-mentioned technical scheme, the setting of extending section is spacing to the four ring-opening to ensure the stability of four ring-opening installation.
Further setting the following steps: and a plane bearing is arranged between the four-open ring and the limiting convex ring.
Through adopting above-mentioned technical scheme, planar bearing's setting supports and reduces valve rod pivoted frictional resistance the valve rod.
Further setting as follows: and bearings are arranged between the internal part and the valve rod and between the valve rod and the valve cover.
Through adopting above-mentioned technical scheme, the setting of bearing promotes the installation accuracy of valve rod and reduces the frictional resistance of valve rod in the rotation.
Further setting the following steps: and the inner part is provided with a mounting groove for mounting the second sealing element, and the bottom of the mounting groove is provided with an inclined surface which inclines away from one side of the valve rod.
Through adopting above-mentioned technical scheme, the setting on inclined plane makes the second sealing member can move towards the fitting clearance that forms between valve rod and the internals when the atress, further promotes sealed effect.
In conclusion, the invention has the following beneficial effects: the valve rod of the invention is integrally prevented from flying out, the stuffing box forms self-locking and can meet the standard pressure self-sealing requirement.
Drawings
FIG. 1 is a sectional view of an embodiment;
fig. 2 is an enlarged view of a portion a in fig. 1.
In the figure: 1. a valve body; 2. a valve cover; 3. a sphere; 4. a left valve seat; 5. a valve stem; 6. a limiting groove; 7. a first seal packing; 71. weaving a graphite ring; 72. a graphite ring; 73. a spacer ring; 8. a packing gland; 9. an elastic member; 10. a limit convex ring; 11. opening a ring; 12. an internal member; 13. a second seal member; 14. a stuffing box; 15. a thin nut; 16. an extension section; 17. a plane bearing; 18. a bearing; 19. mounting grooves; 20. an inclined surface; 21. a right valve seat; 22. a seal ring; 23. flattening the gasket; 24. a second disc spring.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 and 2, a top-mounted ball valve for thermal power ultra-supercritical comprises a valve body 1, a valve cover 2 mounted on the valve body 1, and a ball body 3, a left valve seat 4 and a right valve seat 21 which are arranged inside the valve body 1, wherein the ball body 3 and the left valve seat 4 are matched to form a seal. Install on the valve gap 2 and insert and establish into valve body 1 and with the driven valve rod 5 of spheroid 3 grafting, seted up spacing groove 6 in the valve body 1, be equipped with between spacing groove 6 and the valve rod 5 and be used for restricting the spacing subassembly that valve rod 5 breaks away from valve body 1. The limiting assembly comprises a limiting convex ring 10 integrally arranged on the valve rod 5 and a four-open ring 11 arranged in the limiting groove 6 and abutted to the upper part of the limiting convex ring 10, and a plane bearing 17 is arranged between the four-open ring 11 and the limiting convex ring 10.
An inner part 12 is arranged between the valve body 1 and the valve rod 5 and above the four-open ring 11, an extension section 16 for limiting the four-open ring 11 to be separated from the limiting groove 6 extends from the inner part 12, a second sealing element 13 is arranged between the inner part 12 and the valve body 1, a stuffing box 14 is arranged above the second sealing element 13, and the second sealing element 13 is a graphite cladding pad. A first sealing packing 7 is arranged between the packing box 14 and the valve rod 5, a packing gland 8 is arranged above the first sealing packing 7, an elastic part 9 for driving the packing gland 8 to extrude the first sealing packing 7 is arranged on the valve cover 2, and the elastic part 9 is a first disc spring.
The peripheral wall of the stuffing box 14 is in threaded connection with the valve body 1, the thin nut 15 for locking the stuffing box 14 is in threaded connection with the valve body 1, and the thin nut 15 is located above the stuffing box 14. The first sealing packing 7 comprises a braided graphite ring 71, a graphite ring 72 and a spacer ring 73; bearings 18 are provided between the inner member 12 and the valve stem 5, and between the valve stem 5 and the bonnet 2. The inner member 12 is formed with a mounting groove 19 for mounting the second packing 13, and the bottom of the mounting groove 19 is formed with an inclined surface 20 inclined away from the valve stem 5. A sealing ring 22 is arranged between the right valve seat 21 and the valve body 1, a flat gasket 23 is arranged between the left valve seat 4 and the valve body 1, and a second disc spring 24 for driving the left valve seat 4 to move towards the ball body 3 is arranged between the flat gasket 23 and the left valve seat 4.
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 of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (7)
1. The utility model provides a top mounted ball valve for ultra supercritical of thermoelectricity, includes valve body (1), sets up in valve gap (2) of valve body (1) and be located inside spheroid (3), left disk seat (4) and right disk seat (21) of valve body (1), be equipped with on valve gap (2) and insert and establish into valve body (1) and peg graft driven valve rod (5) with spheroid (3), its characterized in that: a limiting groove (6) is formed in the valve body (1), a limiting assembly used for limiting the valve rod (5) to be separated from the valve body (1) is arranged between the limiting groove (6) and the valve rod (5), a first sealing filler (7) is arranged between the valve rod (5) and the valve body (1), a filler gland (8) is arranged above the first sealing filler (7), an elastic part (9) used for driving the filler gland (8) to extrude the first sealing filler (7) is arranged on the valve cover (2), a sealing ring (22) is arranged between the right valve seat (21) and the valve body (1), a flat gasket (23) is arranged between the left valve seat (4) and the valve body (1), and a second disc spring (24) used for driving the left valve seat (4) to move towards the ball body (3) is arranged between the flat gasket (23) and the left valve seat (4);
the limiting assembly comprises a limiting convex ring (10) arranged on the valve rod (5) and a four-open ring (11) which is arranged in the limiting groove (6) and abuts against the upper part of the limiting convex ring (10);
an inner part (12) is arranged between the valve body (1) and the valve rod (5) and above the four open rings (11), a second sealing element (13) is arranged between the inner part (12) and the valve body (1), and a stuffing box (14) is arranged above the second sealing element (13).
2. The top-mounted ball valve for thermal power ultra supercritical as claimed in claim 1, wherein: the packing box (14) is in threaded connection with the valve body (1), and a thin nut (15) for locking the packing box (14) is connected to the inner thread of the valve body (1).
3. The top-mounted ball valve for thermal power ultra supercritical as claimed in claim 2 wherein: the periphery wall and the valve body (1) threaded connection of packing box (14), first sealed packing (7) set up between packing box (14) internal perisporium and valve rod (5), first sealed packing (7) are including weaving graphite ring (71), graphite ring (72) and spacer ring (73).
4. The top-mounted ball valve for thermal power ultra supercritical according to claim 1, characterized in that: the inner part (12) is extended with an extension section (16) which limits the four open rings (11) to be separated from the limit groove (6).
5. The top-mounted ball valve for thermal power ultra supercritical according to claim 1, characterized in that: and a plane bearing (17) is arranged between the four open rings (11) and the limiting convex ring (10).
6. The top-mounted ball valve for thermal power ultra supercritical as claimed in claim 1, wherein: and bearings (18) are arranged between the internal part (12) and the valve rod (5) and between the valve rod (5) and the valve cover (2).
7. The top-mounted ball valve for thermal power ultra supercritical according to claim 1, characterized in that: an installation groove (19) for installing the second sealing element (13) is formed in the inner part (12), and an inclined surface (20) which is inclined to the side opposite to the valve rod (5) is formed at the bottom of the installation groove (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110069577.8A CN112797179B (en) | 2021-01-19 | 2021-01-19 | Top-mounted ball valve for thermal power ultra-supercritical |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110069577.8A CN112797179B (en) | 2021-01-19 | 2021-01-19 | Top-mounted ball valve for thermal power ultra-supercritical |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112797179A CN112797179A (en) | 2021-05-14 |
| CN112797179B true CN112797179B (en) | 2022-11-15 |
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ID=75810425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110069577.8A Active CN112797179B (en) | 2021-01-19 | 2021-01-19 | Top-mounted ball valve for thermal power ultra-supercritical |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112797179B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2418317Y (en) * | 1999-12-18 | 2001-02-07 | 孙承蒙 | Anti-theft high-temp and high-pressure metal hard-sealing ball valve |
| CN205001553U (en) * | 2015-09-28 | 2016-01-27 | 伯特利阀门集团有限公司 | Special high performance ball valve in high temperature high pressure power station |
| CN206429693U (en) * | 2017-02-09 | 2017-08-22 | 浙江欧菲石油设备有限公司 | Floating ball valve is filled in one kind |
| CN207486168U (en) * | 2017-11-29 | 2018-06-12 | 烟台金泰美林科技股份有限公司 | Top dress blowout prevention valve rod ceramic ball valve |
| CN209909221U (en) * | 2019-04-09 | 2020-01-07 | 温州市瓯斯特阀门有限公司 | Critical ball valve |
| CN111120683A (en) * | 2020-03-17 | 2020-05-08 | 山东中力高压阀门股份有限公司 | Top-mounted deep sea self-sealing ball valve |
| CN111706694B (en) * | 2020-07-31 | 2022-11-22 | 湖北泰和石化设备有限公司 | Ultra-low temperature superhigh pressure facial make-up formula self sealss ball valve |
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2021
- 2021-01-19 CN CN202110069577.8A patent/CN112797179B/en active Active
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| Publication number | Publication date |
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| CN112797179A (en) | 2021-05-14 |
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