CN103759071B - The tap hole sealing configuration of valve - Google Patents
The tap hole sealing configuration of valve Download PDFInfo
- Publication number
- CN103759071B CN103759071B CN201310733948.3A CN201310733948A CN103759071B CN 103759071 B CN103759071 B CN 103759071B CN 201310733948 A CN201310733948 A CN 201310733948A CN 103759071 B CN103759071 B CN 103759071B
- Authority
- CN
- China
- Prior art keywords
- tap hole
- plug screw
- packing ring
- sealing configuration
- sealing gasket
- 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.)
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Links
- 238000007789 sealing Methods 0.000 title claims abstract description 71
- 239000000945 filler Substances 0.000 claims abstract description 31
- 238000012856 packing Methods 0.000 claims abstract description 31
- 230000001681 protective effect Effects 0.000 claims description 18
- 239000011324 bead Substances 0.000 claims description 14
- 239000004809 Teflon Substances 0.000 claims description 5
- 229920006362 Teflon® Polymers 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 7
- 238000013022 venting Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000001458 anti-acid effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000004067 bulking agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000003317 industrial substance Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Valve Housings (AREA)
Abstract
The present invention relates to a kind of tap hole sealing configuration of valve, valve comprises valve body, valve body is provided with tap hole, this tap hole sealing configuration comprises: plug screw, be threaded with tap hole, plug screw comprises first end and the second end, and first end forms the first sealed step and the second sealed step, and the diameter of the first sealed step is less than the diameter of the second sealed step; First sealing gasket, is positioned at the first step place of tap hole; Second sealing gasket, is positioned at the second step place of tap hole, and the diameter of first step is less than the diameter of second step; Filler packing ring, the first end of plug screw is according to the first sealing gasket and the second sealing gasket; Filler packing ring is enclosed within the outside of plug screw by the second end of plug screw, and filler packing ring is positioned at tap hole; Blind flange, in its annular gap at least partially between tap hole and plug screw, and filler packing ring is pressed in annular gap by blind flange.The present invention forms three seal structures, improves the reliability of sealing, Safety performance.
Description
Technical field
The present invention relates to valve field, particularly relate to a kind of tap hole sealing configuration of valve.
Background technique
As everyone knows, in national economy, valve is one of indispensable industrial pipeline annex and equipment, all need various pipeline to carry various medium in factory or mine, Iron And Steel Plant, oil refinery, power station, chemical plant, oil field, oil gas has much water, air, oil product, rock gas, the pipeline of industrial chemicals and other Korrosionsmediums, and new development nuclear power etc. out all be unable to do without valve, valve is in fluid system, be used for controlling the direction of fluid, pressure, the device of flow, there is water conservancy diversion, cut-off, throttling, non-return, the functions such as shunting or overflow release.But High Temperature High Pressure, inflammable and explosive, deep-etching, cryogenic environment etc. are had higher requirement to valve, blowdown exhaust is as function requisite on valve, but blowdown exhaust outlet point is also the leakage point on valve, therefore the medium how better stopped in valve leaks from blowdown venting gas appliance, becomes an important topic of current valve development.
Blowdown venting gas appliance sealing in existing practical application is all following two kinds of structures: one, directly with the plug screw with NPT screw thread, valve body is processed NPT interior threaded hole, plug screw is tightened on valve body; Two, be welded on valve body with plug.Existing blowdown venting gas appliance does not more prevent misoperation function.
The blowdown venting gas appliance that current valve is used, when medium is the harmful poisonous gas gonosome of high concentration, molecular density is little, easily burn once leak in air, when easy harm humans and environment, need to hunt leak with helium mass spectrometer leak detector, directly with the plug screw with NPT screw thread, the tooth form of NPT screw thread is being subject to load, under the corrosivity effect of medium, structure is very unreliable, and for more unreliable under low temperature and ultralow temperature mixture condition, in low temperature or ultralow temperature situation, metal threaded tooth form can shrink, sealing material can be out of shape and cause leaking.Be welded on the device on valve body with plug, weld seam needs to check control, need slice off weld seam, need again to weld after blowdown terminates when valve blowdown uses, and gives and uses execute-in-place to bring great inconvenience.This patent overcomes above all Problems existing, stablizes for valve provides a sealing, easy to operate, reliable blowdown vent hole seal device.
Summary of the invention
The object of this invention is to provide that a kind of structure is simple, cost is low, the tap hole sealing configuration of the valve of good seal performance.
For solving the problems of the technologies described above, as one aspect of the present invention, provide a kind of tap hole sealing configuration of valve, valve comprises valve body, and valve body is provided with tap hole, and this tap hole sealing configuration comprises: plug screw, be threaded with tap hole, plug screw comprises first end and the second end, and first end forms the first sealed step and the second sealed step, and the diameter of the first sealed step is less than the diameter of the second sealed step; First sealing gasket, is positioned at the first step place of tap hole; Second sealing gasket, is positioned at the second step place of tap hole, and the diameter of first step is less than the diameter of second step; Filler packing ring, the first end of plug screw is according to the first sealing gasket and the second sealing gasket; Filler packing ring is enclosed within the outside of plug screw by the second end of plug screw, and filler packing ring is positioned at tap hole; Blind flange, in its annular gap at least partially between tap hole and plug screw, and filler packing ring is pressed in annular gap by blind flange.
Further, blind flange is connected with valve body by fastening piece.
Further, tap hole sealing configuration also comprises: protective cover, and covering on blind flange and to be fixedly connected with blind flange, the end of fastening piece is positioned at protective cover.
Further, protective cover welds with blind flange.
Further, the second end of plug screw has prismatic structure.
Further, plug screw also comprises bead, and bead is between the second sealed step and the second end, and one end of filler packing ring abuts with bead.
Further, the radial plane of the plug screw relative to the surface of contact of filler packing ring of bead is arranged obliquely.
Further, the position corresponding with the second end of plug screw of protective cover offers operation aperture.
Further, the first sealing gasket and the second sealing gasket adopt teflon to make.
Further, filler packing ring is suppressed by graphite and is formed.
The present invention adopts the first sealed step, the first sealing gasket and the first step cooperatively interacted to form first sealing configuration, the second sealed step, the second sealing gasket and the second step cooperatively interacted is adopted to form second sealing configuration, in addition, also adopt the three seal structures that filler packing ring and blind flange are formed, thus improve reliability, the Safety performance of sealing, possess simultaneously antitheft, anti-misoperation, can on-line maintenance, have easy to use, be applicable to the feature promoted the use of.
Accompanying drawing explanation
Fig. 1 diagrammatically illustrates structural representation of the present invention;
Fig. 2 diagrammatically illustrates the structural representation of plug screw.
Reference character in figure: 1, valve body; 2, tap hole; 3, plug screw; 4, the first sealing gasket; 5, the second sealing gasket; 6, filler packing ring; 7, blind flange; 8, fastening piece; 9, protective cover; 10, bead; 11, operation aperture; 12, the first sealed step; 13, the second sealed step; 14, screw thread; 15, prismatic structure.
Embodiment
Below embodiments of the invention are described in detail, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
Please refer to Fig. 1 to Fig. 2, the invention provides a kind of tap hole (particularly blowdown exhaust port) sealing configuration of valve, wherein, valve comprises valve body 1, valve body 1 is provided with tap hole 2.Described tap hole sealing configuration comprises: plug screw 3, is threaded with tap hole 2, and plug screw 3 comprises first end and the second end, and the diameter that first end forms the first sealed step 12 and the second sealed step 13, first sealed step is less than the diameter of the second sealed step; First sealing gasket 4, is positioned at the first step place of tap hole 2; Second sealing gasket 5, is positioned at the second step place of tap hole 2, and the diameter of first step is less than the diameter of second step; Filler packing ring 6, the first end of plug screw 3 is according to the first sealing gasket 4 and the second sealing gasket 5; Filler packing ring 6 is enclosed within the outside of plug screw 3 by the second end of plug screw 3, and filler packing ring 6 is positioned at tap hole 2; Blind flange 7, in its annular gap at least partially between tap hole 2 and plug screw 3, and filler packing ring 6 is pressed in annular gap by blind flange 7.
The present invention adopts the first sealed step 12, first sealing gasket 4 and first step formation first sealing configuration that cooperatively interact, adopt the second sealed step 13, second sealing gasket 5 and second step formation second sealing configuration that cooperatively interact, in addition, also adopt the three seal structures that filler packing ring 6 and blind flange 7 are formed, thus improve reliability, the Safety performance of sealing, have easy to use, be applicable to the feature promoted the use of.
Preferably, blind flange 7 is connected with valve body 1 by fastening piece 8.Preferably, fastening piece 8 can be the fastening piece that stud and nut are formed.
Preferably, tap hole sealing configuration also comprises: protective cover 9, and covering on blind flange 7 and to be fixedly connected with blind flange 7, the end of fastening piece 8 is positioned at protective cover 9.Preferably, protective cover 9 welds with blind flange 7.Like this, only need to destroy protective cover 9 and welding between blind flange 7, dismounting can be realized, very convenient, and can being dismounted for multiple times.
During use, filler packing ring 6 is contained on plug screw 3, then compresses with blind flange 7, the fastening piece pretension formed with nut and stud.Prevent loosening of nut with spring washer again, finally protective cover 9 be placed on blind flange 7, be welded and fixed, prevent protective cover 9 from loosening, simultaneously antitheft, prevent from arbitrarily disassembling.As shown in Figure 1, wherein, nut is positioned at the below of protective cover 9, and protected lid 9 hides, and can prevent field operation misoperation later in installation of the present invention.And the second end of plug screw 3 is also in the below of protective cover 9, just can operate with special spanner, also prevent field operation misoperation.
Preferably, the second end of plug screw 3 has prismatic structure 15.Preferably, the position corresponding with the second end of plug screw 3 of protective cover 9 offers operation aperture 11.As shown in Figure 1, prismatic structure 15 is set at the second end of plug screw 3, the many ribs hole spanner manufactured specially can be utilized to operate plug screw 3, to tighten easily and lax first sealing gasket 4 and the second sealing gasket 5.When rotating prismatic structure 15, the first sealing gasket 4 and the second sealing gasket 5 can be made to be pressed on valve body 1.
Preferably, plug screw 3 also comprises bead 10, and bead 10 is between the second sealed step and the second end, and one end of filler packing ring 6 abuts with bead 10.Especially, plug screw 3 also comprises screw thread 14, and it is between bead 10 and the second sealed step 13, for being connected with tap hole 2.
Preferably, the radial plane of the plug screw 3 relative to the surface of contact of filler packing ring 6 of bead 10 is arranged obliquely.
Preferably, the first sealing gasket 4 and the second sealing gasket 5 adopt teflon to make.Teflon has the feature of antiacid alkali resistant, anti-various organic solvent, is dissolved in all solvents hardly, has high-low temperature resistant simultaneously, have sealing, height lubricates not viscosity, electrical insulating property and good ageing resistance.Due to the first sealing gasket 4 and the second sealing gasket 5 directly and medium contact, very harsh to the requirement of the first sealing gasket 4 and the second sealing gasket 5, select teflon as sealing gasket, the field of the application of valve is more wide.
Preferably, filler packing ring 6 is suppressed by graphite and is formed.Filler packing ring 6 is without any bulking agent and binder, and purity is greater than 98%.The cross section of filler packing ring 6 is square, also can be processed into wedge shape or V-arrangement is applicable to high pressure position, this patent adopts cross section to be wedge shape, is applicable to the strong corrosive media such as soda acid and solvent and not pollution medium, and there is fire-proof function, when valve also has good sealability in the state of catching fire.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a tap hole sealing configuration for valve, described valve comprises valve body (1), described valve body (1) is provided with tap hole (2), it is characterized in that, described tap hole sealing configuration comprises:
Plug screw (3), is threaded with described tap hole (2), and described plug screw (3) comprises first end and the second end, and described first end forms the first sealed step and the second sealed step, and the diameter of described first sealed step is less than the diameter of described second sealed step;
First sealing gasket (4), is positioned at the first step place of described tap hole (2);
Second sealing gasket (5), is positioned at the second step place of described tap hole (2), and the diameter of described first step is less than the diameter of described second step;
Filler packing ring (6), the described first end of described plug screw (3) is successively through described first sealing gasket (4) and described second sealing gasket (5); Described filler packing ring (6) is enclosed within the outside of described plug screw (3) by the second end of described plug screw (3), and described filler packing ring (6) is positioned at described tap hole (2);
Blind flange (7), it is positioned at the annular gap between described tap hole (2) and described plug screw (3) at least partially, and described filler packing ring (6) is pressed in described annular gap by described blind flange (7).
2. tap hole sealing configuration according to claim 1, is characterized in that, described blind flange (7) is connected with described valve body (1) by fastening piece (8).
3. tap hole sealing configuration according to claim 2, is characterized in that, described tap hole sealing configuration also comprises:
Protective cover (9), cover on described blind flange (7) and go up and be fixedly connected with described blind flange (7), the end of described fastening piece (8) is positioned at described protective cover (9).
4. tap hole sealing configuration according to claim 3, is characterized in that, described protective cover (9) welds with described blind flange (7).
5. tap hole sealing configuration according to claim 3, is characterized in that, the second end of described plug screw (3) has prismatic structure.
6. tap hole sealing configuration according to claim 1, it is characterized in that, described plug screw (3) also comprises bead (10), and described bead (10) is between described second sealed step and described second end, and one end of described filler packing ring (6) abuts with described bead (10).
7. tap hole sealing configuration according to claim 6, is characterized in that, the radial plane of the described plug screw (3) relative to the surface of contact of described filler packing ring (6) of described bead (10) is arranged obliquely.
8. tap hole sealing configuration according to claim 3, is characterized in that, the position corresponding with the second end of described plug screw (3) of described protective cover (9) offers operation aperture.
9. tap hole sealing configuration according to claim 1, is characterized in that, described first sealing gasket (4) and described second sealing gasket (5) adopt teflon to make.
10. tap hole sealing configuration according to claim 1, is characterized in that, described filler packing ring (6) is suppressed by graphite and formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310733948.3A CN103759071B (en) | 2013-12-26 | 2013-12-26 | The tap hole sealing configuration of valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310733948.3A CN103759071B (en) | 2013-12-26 | 2013-12-26 | The tap hole sealing configuration of valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103759071A CN103759071A (en) | 2014-04-30 |
| CN103759071B true CN103759071B (en) | 2016-04-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310733948.3A Active CN103759071B (en) | 2013-12-26 | 2013-12-26 | The tap hole sealing configuration of valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103759071B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5325078Y2 (en) * | 1974-10-21 | 1978-06-27 | ||
| WO1992018794A1 (en) * | 1991-04-16 | 1992-10-29 | Lewis Edwin C Ii | Pressurised closure |
| CN101517306A (en) * | 2006-10-04 | 2009-08-26 | 丰田自动车株式会社 | Cylinder fixing flange structure, and high-pressure gas container having the cylinder fixing flange structure |
| CN202170903U (en) * | 2011-07-27 | 2012-03-21 | 龙工(福建)液压有限公司 | Hydraulic cylinder exhaust device |
| CN202599206U (en) * | 2012-02-03 | 2012-12-12 | 中国石油化工股份有限公司 | Screwed plug seal structure |
| CN103122850A (en) * | 2011-11-18 | 2013-05-29 | 镇江江大泵业科技有限公司 | Multifunctional screw |
| CN203686346U (en) * | 2013-12-26 | 2014-07-02 | 方正阀门集团有限公司 | Discharge hole sealing structure of valve |
-
2013
- 2013-12-26 CN CN201310733948.3A patent/CN103759071B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5325078Y2 (en) * | 1974-10-21 | 1978-06-27 | ||
| WO1992018794A1 (en) * | 1991-04-16 | 1992-10-29 | Lewis Edwin C Ii | Pressurised closure |
| CN101517306A (en) * | 2006-10-04 | 2009-08-26 | 丰田自动车株式会社 | Cylinder fixing flange structure, and high-pressure gas container having the cylinder fixing flange structure |
| CN202170903U (en) * | 2011-07-27 | 2012-03-21 | 龙工(福建)液压有限公司 | Hydraulic cylinder exhaust device |
| CN103122850A (en) * | 2011-11-18 | 2013-05-29 | 镇江江大泵业科技有限公司 | Multifunctional screw |
| CN202599206U (en) * | 2012-02-03 | 2012-12-12 | 中国石油化工股份有限公司 | Screwed plug seal structure |
| CN203686346U (en) * | 2013-12-26 | 2014-07-02 | 方正阀门集团有限公司 | Discharge hole sealing structure of valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103759071A (en) | 2014-04-30 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 325000 no.1921 Binhai 1st Road, Wenzhou Economic and Technological Development Zone, Wenzhou City, Zhejiang Province Patentee after: Founder Valve Group Co.,Ltd. Address before: Yongjia oubeizhen Wenzhou County of Zhejiang province 325102 city and village Patentee before: FANGZHENG VALVE GROUP Co.,Ltd. |
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| CP03 | Change of name, title or address | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Discharge hole sealing structure of valve Effective date of registration: 20211116 Granted publication date: 20160413 Pledgee: China Merchants Bank (CMB) Limited by Share Ltd. Wenzhou branch Pledgor: Founder Valve Group Co.,Ltd. Registration number: Y2021330002265 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20231016 Granted publication date: 20160413 Pledgee: China Merchants Bank (CMB) Limited by Share Ltd. Wenzhou branch Pledgor: Founder Valve Group Co.,Ltd. Registration number: Y2021330002265 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |