CN101581375A - Metal hard seal ball valve - Google Patents

Metal hard seal ball valve Download PDF

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Publication number
CN101581375A
CN101581375A CNA2009100327192A CN200910032719A CN101581375A CN 101581375 A CN101581375 A CN 101581375A CN A2009100327192 A CNA2009100327192 A CN A2009100327192A CN 200910032719 A CN200910032719 A CN 200910032719A CN 101581375 A CN101581375 A CN 101581375A
Authority
CN
China
Prior art keywords
valve
ball
metal hard
sealing
seats
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
Application number
CNA2009100327192A
Other languages
Chinese (zh)
Inventor
黎勇军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KUNSHAN WEISA VALVE CO Ltd
Original Assignee
KUNSHAN WEISA VALVE CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by KUNSHAN WEISA VALVE CO Ltd filed Critical KUNSHAN WEISA VALVE CO Ltd
Priority to CNA2009100327192A priority Critical patent/CN101581375A/en
Publication of CN101581375A publication Critical patent/CN101581375A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a metal hard seal ball valve, which comprises a valve body, a valve cover, a valve ball, valve seats, a valve rod, a bracket and a drive device, wherein the valve body and the valve cover are connected to form a cavity, the valve ball provided with a through hole is positioned in the cavity, the upper end of the valve ball is connected with the valve rod, two sides of the valve ball are provided with the valve seats respectively, the bracket is fixedly connected with the valve body through bolts, the drive device is connected with a valve rod shaft through the bracket, the valve seats are made of a metal material, and a sealing gasket, a pressure ring and a belleville spring are arranged between the valve base and the valve body in turn. The metal hard seal ball valve adopts a metal-metal dual sealing mode between the valve body and the valve seats, between the valve cover and the valve seats, and between the valve seats and the valve ball to greatly improve the sealability, and can be applied to a working condition at a temperature of more than 500 DEG C; besides, by spraying a hard alloy or a hardened material on the surfaces of the valve seats and the valve ball, the metal hard seal ball valve has necessary precision and hardness for sealing, and the specially manufactured elastic valve seats and the belleville spring have quite low operating torques.

Description

Metal hard-sealing ball valve
Technical field
The present invention relates to a kind of ball valve, relate in particular to a kind of metal hard-sealing ball valve of metal to metal seal.
Background technique
Ball valve is mainly used in every field such as oil, chemical industry, iron and steel, metallurgy and electric power, valve with respect to other controlling plumbing fixtures medium circulations, ball valve has advantages such as resistance of medium is little, easy to operate, but the valve seat of traditional ball valve generally all adopts soft material, because the elasticity of soft material is relatively good, has bigger decrement, but sealing is not fine, and its heat resistance is not strong, usually the temperature that can bear can not surpass 300 ℃, can't satisfy the requirement of domestic and international every profession and trade to sealing and high temperature.
Summary of the invention
In order to overcome the deficiencies in the prior art, the object of the present invention is to provide a kind of good seal performance, resistant to elevated temperatures metal hard-sealing ball valve.
The present invention is achieved through the following technical solutions:
A kind of metal hard-sealing ball valve, comprise valve body, valve gap, valve ball, valve seat, valve rod, support and drive unit, valve body and valve gap are connected to form a cavity, the valve ball that is provided with through hole is positioned at cavity, the upper end of valve ball links to each other with valve rod, the both sides of valve ball are respectively arranged with valve seat, support is fixedlyed connected with valve body by screw, and drive unit is connected with stem shaft by support, described valve seat is a metallic material, is disposed with sealing gasket, pressure ring and butterfly spring between valve body and valve seat (4), valve gap and valve seat.
The above-mentioned valve seat and the surface of valve ball all are coated with hardened material or cemented carbide such as Tungsten carbite or chromium carbide or carry out nitriding treatment.
The material of above-mentioned sealing gasket is the graphite packing of V-structure.
The invention has the beneficial effects as follows: metal hard-sealing ball valve of the present invention, what adopt between its valve body and valve seat, valve gap and valve seat, valve seat and valve ball is the two seals form of metal to metal, strengthened sealability widely, and can be used for surpassing 500 ℃ operating mode, in addition, by the surface of valve seat and valve ball being carried out pile-up welding hard alloy or spraying hardened material, make it to have sealing necessary precision and hardness, and special rubber-like valve seat and belleville spring make the present invention have lower operation moment of torsion.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Main reference character implication among the figure:
1, valve body 2, valve gap 3, valve ball 4, valve seat
5, valve rod 13, pressure ring 14, sealing gasket 15, support
Embodiment
Below in conjunction with accompanying drawing, describe the specific embodiment of the present invention in detail:
Fig. 1 is a structural representation of the present invention.
As shown in Figure 1: a kind of metal hard-sealing ball valve, comprise valve body 1, valve gap 2, valve ball 3, valve seat 4, valve rod 5, support 15 and drive unit (not shown), valve body 1 and valve gap 2 are fixedly connected to form a cavity by double-screw bolt 18 and the nut b19 that is positioned at its two ends, form sealing by wound gasket a7, the valve ball 3 that is provided with through hole is positioned at cavity, the both sides of valve ball 3 are respectively arranged with valve seat 4, described valve seat 4 is a metallic material, at valve body 1 and valve seat 4, be disposed with sealing gasket 14 between valve gap 2 and the valve seat 4, pressure ring 13 and butterfly spring b12, form effective seal, the upper end of valve ball 3 is connected with an end of valve rod 5, fixedly connected with valve body 1 with butterfly spring a11 by nut a10 in the intermediate portion of valve rod 5, and by the gland 6 between valve rod 5 and the valve body, filler 8 and wound gasket b9 form sealing, the afterbody of valve rod 5 is with driving casing 16, support 15 is fixedlyed connected by screw 17 with valve body 1, and drive unit is connected with 5 of valve rods by support 15, by above-mentioned support is set, can prevent that valve rod 5 from flying out, and ensures safety in production in the process of work.
Adopt the supersonic spray coating technology, be coated with Tungsten carbite or chromium carbide hardened material or cemented carbide on the surface of above-mentioned valve seat 4 and valve ball 3, make the fine and close combination of valve seat and valve ball, and its surface hardness is reached more than the HRC65, have good rub resistance, performance such as shock-resistant.
The material of above-mentioned sealing gasket 14 is graphite packing, and its shaped design is become V-type, realizes good sealing, and this kind structure reduces ball valve moment of torsion when opening or closing.
Working procedure is as follows: during proper functioning, metal hard-sealing ball valve is installed in the middle of the system pipeline, MEDIA FLOW is through the through hole of valve ball 3, and drive unit acts on the valve rod 1, and valve rod 1 rotates, it drives valve ball 3 and rotates together, rotate 90 °, realize the opening and closing of valve, when the valve expanded by heating, under the effect of valve seat 4 and butterfly spring b12, can absorb distortion, prevent that valve ball 3 is stuck.
Below disclose the present invention with preferred embodiment, so it is not in order to restriction the present invention, and all employings are equal to replaces or technological scheme that the equivalent transformation mode is obtained, all drops within protection scope of the present invention.

Claims (5)

1, a kind of metal hard-sealing ball valve, comprise valve body (1), valve gap (2), valve ball (3), valve seat (4), valve rod (5), support (15) and drive unit, valve body (1) and valve gap (2) are connected to form a cavity, the valve ball (3) that is provided with through hole is positioned at cavity, the upper end of valve ball (3) links to each other with valve rod (5), the both sides of valve ball (3) are respectively arranged with valve seat (4), support (15) is fixedlyed connected with valve body (1) by screw, and drive unit is connected with valve rod (5) axle by support (15), it is characterized in that: described valve seat (4) is a metallic material, at valve body (1) and valve seat (4), be disposed with sealing gasket (14) between valve gap (2) and the valve seat (4), pressure ring (13) and butterfly spring (12).
2, metal hard-sealing ball valve according to claim 1 is characterized in that the surface of described valve seat (4) and valve ball (3) all is coated with hardened material or cemented carbide.
3, metal hard-sealing ball valve according to claim 2 is characterized in that described hardened material is Tungsten carbite or chromium carbide.
4, metal hard-sealing ball valve according to claim 1, the material that it is characterized in that described sealing gasket (14) is graphite packing.
5, metal hard-sealing ball valve according to claim 4 is characterized in that described graphite packing is a V-structure.
CNA2009100327192A 2009-06-26 2009-06-26 Metal hard seal ball valve Pending CN101581375A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNA2009100327192A CN101581375A (en) 2009-06-26 2009-06-26 Metal hard seal ball valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNA2009100327192A CN101581375A (en) 2009-06-26 2009-06-26 Metal hard seal ball valve

Publications (1)

Publication Number Publication Date
CN101581375A true CN101581375A (en) 2009-11-18

Family

ID=41363648

Family Applications (1)

Application Number Title Priority Date Filing Date
CNA2009100327192A Pending CN101581375A (en) 2009-06-26 2009-06-26 Metal hard seal ball valve

Country Status (1)

Country Link
CN (1) CN101581375A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102207205A (en) * 2011-03-16 2011-10-05 北京蓝爱迪电力技术有限公司 Integral forged high-temperature high-pressure abnormal protective seal ball valve device and mounting method thereof
CN102410381A (en) * 2011-08-10 2012-04-11 重庆川仪特种阀门修造有限公司 Bidirectional hard seal ball valve for coal chemical industry
CN102893067A (en) * 2010-02-26 2013-01-23 株式会社富士金 Ball valve
CN102966752A (en) * 2012-11-22 2013-03-13 浙江中德自控阀门有限公司 Solid powder regulation ball valve
CN105179733A (en) * 2015-10-08 2015-12-23 西诺威阀门控制(苏州)有限公司 Ball valve
CN107269877A (en) * 2017-07-26 2017-10-20 昆山维萨阀门有限公司 A kind of integral type HTHP seal ball-valve
CN107327589A (en) * 2017-07-31 2017-11-07 昆山维萨阀门有限公司 A kind of HTHP fixing ball valve

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1776269A (en) * 2005-12-01 2006-05-24 浙江成达特种阀门厂 Scraper type two-way high-temperature metal hard-sealed ball valve
CN2867000Y (en) * 2005-12-29 2007-02-07 广东明珠集团股份有限公司 High temperature resisting insulation ball valve
CN1940359A (en) * 2005-09-28 2007-04-04 丰田自动车株式会社 Valve and manufacturing method thereof
CN101109457A (en) * 2007-09-07 2008-01-23 北京航天石化技术装备工程公司 Abrasion-proof hard seal metal ball valve
CN101349354A (en) * 2008-09-12 2009-01-21 江苏九龙阀门制造有限公司 Integral top mounting type ultra-high pressure and ultra low temperature hard seal ball valve
CN201262250Y (en) * 2008-09-12 2009-06-24 江苏盐电阀门有限公司 Metal hard seal ball valve

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1940359A (en) * 2005-09-28 2007-04-04 丰田自动车株式会社 Valve and manufacturing method thereof
CN1776269A (en) * 2005-12-01 2006-05-24 浙江成达特种阀门厂 Scraper type two-way high-temperature metal hard-sealed ball valve
CN2867000Y (en) * 2005-12-29 2007-02-07 广东明珠集团股份有限公司 High temperature resisting insulation ball valve
CN101109457A (en) * 2007-09-07 2008-01-23 北京航天石化技术装备工程公司 Abrasion-proof hard seal metal ball valve
CN101349354A (en) * 2008-09-12 2009-01-21 江苏九龙阀门制造有限公司 Integral top mounting type ultra-high pressure and ultra low temperature hard seal ball valve
CN201262250Y (en) * 2008-09-12 2009-06-24 江苏盐电阀门有限公司 Metal hard seal ball valve

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102893067A (en) * 2010-02-26 2013-01-23 株式会社富士金 Ball valve
CN102893067B (en) * 2010-02-26 2014-07-16 株式会社富士金 Ball valve
CN102207205A (en) * 2011-03-16 2011-10-05 北京蓝爱迪电力技术有限公司 Integral forged high-temperature high-pressure abnormal protective seal ball valve device and mounting method thereof
CN102207205B (en) * 2011-03-16 2013-02-06 北京蓝爱迪电力技术有限公司 Integral forged high-temperature high-pressure abnormal protective seal ball valve device and mounting method thereof
CN102410381A (en) * 2011-08-10 2012-04-11 重庆川仪特种阀门修造有限公司 Bidirectional hard seal ball valve for coal chemical industry
CN102966752A (en) * 2012-11-22 2013-03-13 浙江中德自控阀门有限公司 Solid powder regulation ball valve
CN105179733A (en) * 2015-10-08 2015-12-23 西诺威阀门控制(苏州)有限公司 Ball valve
CN107269877A (en) * 2017-07-26 2017-10-20 昆山维萨阀门有限公司 A kind of integral type HTHP seal ball-valve
CN107327589A (en) * 2017-07-31 2017-11-07 昆山维萨阀门有限公司 A kind of HTHP fixing ball valve

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Application publication date: 20091118