CN102878318A - Integrated valve seat of metal sealing ball valve - Google Patents

Integrated valve seat of metal sealing ball valve Download PDF

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Publication number
CN102878318A
CN102878318A CN2012102981845A CN201210298184A CN102878318A CN 102878318 A CN102878318 A CN 102878318A CN 2012102981845 A CN2012102981845 A CN 2012102981845A CN 201210298184 A CN201210298184 A CN 201210298184A CN 102878318 A CN102878318 A CN 102878318A
Authority
CN
China
Prior art keywords
valve seat
valve
seat
integrated
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
Application number
CN2012102981845A
Other languages
Chinese (zh)
Inventor
梁连金
卓育成
丘平
柯松林
王金富
张大船
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.)
Shanghai Shk Valve Group Co Ltd
Original Assignee
Shanghai Shk Valve Group 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 Shanghai Shk Valve Group Co Ltd filed Critical Shanghai Shk Valve Group Co Ltd
Priority to CN2012102981845A priority Critical patent/CN102878318A/en
Publication of CN102878318A publication Critical patent/CN102878318A/en
Pending legal-status Critical Current

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Abstract

The invention discloses an integrated valve seat of a metal sealing ball valve. The valve seat is an indivisible part of a valve body, and a sealing surface of the valve body. The integrated valve seat has the advantages that the possibility of leakage can be eliminated under the condition of high-strength erosion of media or high-temperature thermal expansion, and tiny solid particles cannot enter or be accumulated in a sealing cavity of the valve seat. In addition, the integrated valve seat is applicable to severe conditions such as high temperature, high pressure difference, abrasion, erosion, corrosion, thermal conditions, frequent opening and closing, zero leakage and the like, has a simple in structure and is low in cost.

Description

The integral type valve seat of metal seal ball valve
Technical field
The present invention relates to a kind of valve seat, particularly the integral type valve seat of the metal seal ball valve under a kind of harsh operating mode.
Background technique
Gu gas-solid, liquid-and multiphase flow in, valve has been proposed harsh requirement: high temperature, High Pressure Difference, wear and tear, wash away, burn into thermal cycle, HF switch and zero leakage etc., the difficulty of metal seal ball valve sealing does not lie between spheroid and the sealing surface of seat, the processing of sphere mostly adopts the high precision numerical control ball crusher, and numerical control machining center is mostly adopted in valve seat processing.Can reach the seal request of bubble level after grinding through pairing between spheroid and the sealing surface of seat, and the leakage of metal seal ball valve, mainly come from the cooperation place of valve body and valve seat.Traditional metal seal ball valve stack valve seat mainly is comprised of valve A 1, spheroid M2, valve seat 3, butterfly spring 4, trim ring 5, valve seat insert 6 as shown in Figure 1.Valve A 1 with the sealing principle of the cooperation place of valve seat 3 is: the pressure-acting of butterfly spring 4 and medium is in trim ring 5, and trim ring 5 compression valve seat seal rings 6 are realized sealing.Spheroid M2 and valve seat 3 spraying cure process have improved wear resistance and flushing resistance greatly.There are two problems in traditional metal seal ball valve stack valve seat.The one, valve A 1 is dynamic seal (packing)s with the cooperation place sealing of valve seat 3, under the powerful erosion or high temperature thermal expansion situation of medium, often causes the loosening or excesssive gap of valve A 1 and valve seat 3, finally causes valve leak.The 2nd, small solid particle enters easily and is deposited in the stack valve seat Seal cage, causes dish spring 4 to lose efficacy, and can't compress valve seat insert 6, finally causes valve leak.Therefore, traditional metal seal ball valve stack valve seat be not suitable for high temperature, High Pressure Difference, wear and tear, wash away, burn into thermal cycle, HF switch and the harsh operating mode of zero leakage.
Summary of the invention
Technical problem to be solved by this invention is the integral type valve seat that a kind of leak free metal seal ball valve will be provided.
In order to solve above technical problem, the invention provides a kind of integral type valve seat of metal seal ball valve, this valve seat is the valve body inalienable part, the sealing surface of valve body is valve seat.
Directly process sealing surface at valve body, making valve seat is the valve body inalienable part, under the powerful erosion or high temperature thermal expansion situation of medium, can not have the possibility of any leakage, and small solid particle yet can not enter and be deposited in the valve base sealing chamber.Valve body and ball seal face spraying cure process have improved wear resistance and flushing resistance greatly.Can reach the seal request of bubble level after the process pairing is ground between valve body and the ball seal face.Therefore, metal seal ball valve integral type valve seat of the present invention be applicable to high temperature, High Pressure Difference, wear and tear, wash away, the harsh operating mode such as burn into thermal cycle, HF switch and zero leakage.
Superior effect of the present invention is:
1) under the powerful erosion or high temperature thermal expansion situation of medium, can there be the possibility of any leakage, small solid particle can not enter and be deposited in the valve base sealing chamber yet;
2) the present invention be applicable to high temperature, High Pressure Difference, wear and tear, wash away, the harsh operating mode such as burn into thermal cycle, HF switch and zero leakage;
3) simple in structure, cost is low.
Description of drawings
Fig. 1 is the structural representation of traditional metal seal ball valve stack valve seat;
Fig. 2 is structural representation of the present invention;
The number in the figure explanation
1-valve A; 2-spheroid M;
3-valve seat; 4-butterfly spring;
5-trim ring; 6-valve seat insert;
7-valve B; 8-spheroid N.
Embodiment
See also shown in the accompanying drawing, the invention will be further described.
As shown in Figure 2, the invention provides a kind of integral type valve seat of metal seal ball valve, this valve seat is the valve body inalienable part, and the sealing surface of valve B 7 is valve seat.
Directly process sealing surface at valve B 7, making valve seat is the valve body inalienable part, under the powerful erosion or high temperature thermal expansion situation of medium, can there be the possibility of any leakage, small solid particle yet can not enter and be deposited in the valve base sealing chamber.Valve B 7 and spheroid N8 sealing surface spraying cure process have improved wear resistance and flushing resistance greatly.Can reach the seal request of bubble level after the process pairing is ground between valve B 7 and the spheroid N8 sealing surface.Therefore, metal seal ball valve integral type valve seat of the present invention be applicable to high temperature, High Pressure Difference, wear and tear, wash away, the harsh operating mode such as burn into thermal cycle, HF switch and zero leakage.

Claims (1)

1. the integral type valve seat of a metal seal ball valve, it is characterized in that: this valve seat is the valve body inalienable part, and the sealing surface of valve body is valve seat.
CN2012102981845A 2012-08-21 2012-08-21 Integrated valve seat of metal sealing ball valve Pending CN102878318A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012102981845A CN102878318A (en) 2012-08-21 2012-08-21 Integrated valve seat of metal sealing ball valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012102981845A CN102878318A (en) 2012-08-21 2012-08-21 Integrated valve seat of metal sealing ball valve

Publications (1)

Publication Number Publication Date
CN102878318A true CN102878318A (en) 2013-01-16

Family

ID=47479764

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012102981845A Pending CN102878318A (en) 2012-08-21 2012-08-21 Integrated valve seat of metal sealing ball valve

Country Status (1)

Country Link
CN (1) CN102878318A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201475404U (en) * 2009-08-25 2010-05-19 哈尔滨松林电站设备有限公司 Metallic hard sealed ball valve used under high temperature and high pressure
CN101813201A (en) * 2010-04-16 2010-08-25 姜明 Integrated high-temperature high-pressure metal seal ball valve
CN101963240A (en) * 2009-07-22 2011-02-02 戴学祥 Expanding type metal seated ball valve
CN202756661U (en) * 2012-08-21 2013-02-27 上海开维喜阀门集团有限公司 Integrated valve seat of metal sealing ball valve

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101963240A (en) * 2009-07-22 2011-02-02 戴学祥 Expanding type metal seated ball valve
CN201475404U (en) * 2009-08-25 2010-05-19 哈尔滨松林电站设备有限公司 Metallic hard sealed ball valve used under high temperature and high pressure
CN101813201A (en) * 2010-04-16 2010-08-25 姜明 Integrated high-temperature high-pressure metal seal ball valve
CN202756661U (en) * 2012-08-21 2013-02-27 上海开维喜阀门集团有限公司 Integrated valve seat of metal sealing ball valve

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C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20130116