CN110715069A - Ultra-large-diameter ball valve sealing structure - Google Patents
Ultra-large-diameter ball valve sealing structure Download PDFInfo
- Publication number
- CN110715069A CN110715069A CN201810754813.8A CN201810754813A CN110715069A CN 110715069 A CN110715069 A CN 110715069A CN 201810754813 A CN201810754813 A CN 201810754813A CN 110715069 A CN110715069 A CN 110715069A
- Authority
- CN
- China
- Prior art keywords
- sealing plate
- ball
- closing plate
- sealing
- ball valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 55
- 239000000463 material Substances 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 229910000885 Dual-phase steel Inorganic materials 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- WUJISAYEUPRJOG-UHFFFAOYSA-N molybdenum vanadium Chemical compound [V].[Mo] WUJISAYEUPRJOG-UHFFFAOYSA-N 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000009428 plumbing Methods 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000006163 transport media Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- F16K5/0663—Packings
- F16K5/0673—Composite packings
-
- 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
- F16K5/0689—Packings between housing and plug
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
The invention relates to the technical field of valve manufacturing, in particular to a sealing structure of an ultra-large-diameter ball valve, which acts between a valve body and an extension pipe and comprises three layers of sealing plates, wherein a first sealing plate, a second sealing plate and a third sealing plate are sequentially arranged from the extension pipe to the valve body, the thickness of the first sealing plate is larger than that of the second sealing plate, the thickness of the first sealing plate is smaller than that of the third sealing plate, flat gaskets are arranged at the upper end and the lower end of the first sealing plate, belleville springs are arranged at the upper end and the lower end of the second sealing plate, L-shaped ball gasket seats are connected at the upper end and the lower end of the third sealing plate, ball gaskets are arranged on the ball gasket seats, gaskets are arranged at the contact positions of the ball gaskets and the extension pipe, and the first sealing plate, the second sealing plate and the third.
Description
Technical Field
The invention relates to the technical field of valve manufacturing, in particular to a sealing structure of an ultra-large-diameter ball valve.
Background
Valves are plumbing accessories used to open and close a pipe, control flow direction, regulate and control parameters of the transport medium (temperature, pressure and flow). According to their function, they can be classified into shut-off valves, check valves, regulating valves, and the like. The valve is a control part in a fluid conveying system and has the functions of stopping, adjusting, guiding, preventing counter flow, stabilizing pressure, shunting or overflowing and relieving pressure and the like.
The valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. The valves are further classified into cast iron valves, cast steel valves, stainless steel valves (201, 304, 316, etc.), chrome molybdenum steel valves, chrome molybdenum vanadium steel valves, dual-phase steel valves, plastic valves, nonstandard valves, etc. according to the material.
The valve seat of the ball valve is composed of a Teflon carbide sealing ring and a disk spring, so that the ball valve has strong adaptability to pressure and temperature changes, and cannot generate any leakage slip in the range of marked pressure and temperature. The integral welded ball valve is generally formed by pressing a carbon steel seamless steel pipe, has good sealing performance and corrosion resistance, and is widely applied to the field of long-distance pipelines such as natural gas, petroleum, heat supply, chemical engineering, thermal power grids and the like. However, the existing ball valve has great limitation and cannot meet the requirement of modern industrial production.
At present, the demand of ultra-large-diameter all-welded ball valves for long-distance pipelines of heat supply projects in various big cities is increased day by day, and due to the limitation of domestic technology and manufacturing level, required valves are mainly imported, so that the project cost is increased.
Disclosure of Invention
The invention aims to provide a sealing structure of an ultra-large-diameter ball valve, which has good sealing property and high safety factor.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a super large-diameter ball valve seal structure, acts on between valve body and the extension pipe, includes the three-layer sealing plate, is first closing plate, second closing plate and third closing plate from the extension pipe to the valve body in proper order, and the thickness of first closing plate is greater than the thickness of second closing plate, and the thickness of first closing plate is less than the thickness of third closing plate, and the upper and lower both ends of first closing plate are provided with the flat pad, and the upper and lower both ends of second closing plate are provided with disc spring.
The invention is further improved, the upper end and the lower end of the third sealing plate are connected with L-shaped ball cushion seats, and ball cushions are arranged on the ball cushion seats.
In a further improvement of the invention, a gasket is arranged at the contact position of the ball pad and the extension pipe.
In a further improvement of the invention, the first sealing plate, the second sealing plate and the third sealing plate are made of polytetrafluoroethylene materials.
The invention has the beneficial effects that: compared with the existing gas valve, the gas valve has the advantages of good sealing performance, high safety factor and long service life.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is an enlarged schematic view of a portion a in fig. 1.
In the figure, 1-extension pipe, 2-valve body, 3-first sealing plate, 4-second sealing plate, 5-third sealing plate, 6-flat gasket, 7-belleville spring, 8-ball gasket seat, 9-gasket and 10-ball gasket.
Detailed Description
For the purpose of enhancing the understanding of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and examples, which are provided for the purpose of illustration only and are not intended to limit the scope of the present invention.
Example (b): as shown in fig. 1 and the drawings, a sealing structure of a ball valve with an ultra-large diameter acts between a valve body 2 and an extension pipe 1, the sealing structure comprises three sealing plates, a first sealing plate 3, a second sealing plate 4 and a third sealing plate 5 are sequentially arranged from the extension pipe 1 to the valve body 2, the thickness of the first sealing plate 3 is larger than that of the second sealing plate 4, the thickness of the first sealing plate 3 is smaller than that of the third sealing plate 5, flat pads 6 are arranged at the upper end and the lower end of the first sealing plate 3, belleville springs 7 are arranged at the upper end and the lower end of the second sealing plate 4, an L-shaped ball pad seat 8 is connected to the upper end and the lower end of the third sealing plate 5, a ball pad 10 is arranged on the ball pad seat 8, and a.
In this embodiment, the first sealing plate 3, the second sealing plate 4 and the third sealing plate 5 are made of teflon.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. The utility model provides a super large-diameter ball valve seal structure, acts on between valve body and the extension pipe, its characterized in that includes the three-layer closing plate, is first closing plate, second closing plate and third closing plate from extension pipe to valve body in proper order, first closing plate thickness is greater than the thickness of second closing plate, first closing plate thickness is less than the thickness of third closing plate, the upper and lower both ends of first closing plate are provided with the flat pad.
2. The ultra large diameter ball valve sealing structure according to claim 1, wherein the upper and lower ends of the second sealing plate are provided with belleville springs.
3. The ultra-large-caliber ball valve sealing structure according to claim 2, wherein the upper end and the lower end of the third sealing plate are connected with L-shaped ball cushion seats, and ball cushions are arranged on the ball cushion seats.
4. The ultra large diameter ball valve sealing structure according to claim 3, wherein a gasket is disposed at a contact position of the ball pad and the extension pipe.
5. The ultra large diameter ball valve sealing structure according to any one of claims 1 to 4, wherein the first sealing plate, the second sealing plate and the third sealing plate are made of polytetrafluoroethylene material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810754813.8A CN110715069A (en) | 2018-07-11 | 2018-07-11 | Ultra-large-diameter ball valve sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810754813.8A CN110715069A (en) | 2018-07-11 | 2018-07-11 | Ultra-large-diameter ball valve sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110715069A true CN110715069A (en) | 2020-01-21 |
Family
ID=69208893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810754813.8A Pending CN110715069A (en) | 2018-07-11 | 2018-07-11 | Ultra-large-diameter ball valve sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110715069A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203500552U (en) * | 2013-09-28 | 2014-03-26 | 江苏威尔迪威阀业有限公司 | Sealing structure of floating flexible seal welding ball valve |
| CN106051204A (en) * | 2016-08-03 | 2016-10-26 | 常州大学 | Ultra-large diameter all-welded ball valve sealing structure |
| CN107542944A (en) * | 2017-09-28 | 2018-01-05 | 江苏威尔迪威阀业有限公司 | A kind of fuel gas ball valve sealing structure |
| CN107606216A (en) * | 2017-09-28 | 2018-01-19 | 江苏威尔迪威阀业有限公司 | A kind of good fuel gas ball valve of sealing |
-
2018
- 2018-07-11 CN CN201810754813.8A patent/CN110715069A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203500552U (en) * | 2013-09-28 | 2014-03-26 | 江苏威尔迪威阀业有限公司 | Sealing structure of floating flexible seal welding ball valve |
| CN106051204A (en) * | 2016-08-03 | 2016-10-26 | 常州大学 | Ultra-large diameter all-welded ball valve sealing structure |
| CN107542944A (en) * | 2017-09-28 | 2018-01-05 | 江苏威尔迪威阀业有限公司 | A kind of fuel gas ball valve sealing structure |
| CN107606216A (en) * | 2017-09-28 | 2018-01-19 | 江苏威尔迪威阀业有限公司 | A kind of good fuel gas ball valve of sealing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200121 |
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| RJ01 | Rejection of invention patent application after publication |