CN112324934A - Valves with carbon graphite sealing rings - Google Patents

Valves with carbon graphite sealing rings Download PDF

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Publication number
CN112324934A
CN112324934A CN202011084930.1A CN202011084930A CN112324934A CN 112324934 A CN112324934 A CN 112324934A CN 202011084930 A CN202011084930 A CN 202011084930A CN 112324934 A CN112324934 A CN 112324934A
Authority
CN
China
Prior art keywords
carbon graphite
valve
graphite sealing
sealing ring
carbon
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
CN202011084930.1A
Other languages
Chinese (zh)
Inventor
宋辉
赵旭东
陈锋
王旭
谭坤
张冬明
罗双燕
吴逸超
殷国华
赵万福
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.)
CHINA PRODUCTIVITY CENTER FOR MACHINERY
Shanghai Nuclear Engineering Research and Design Institute Co Ltd
Shanghai Automation Instrumentation Co Ltd
Original Assignee
CHINA PRODUCTIVITY CENTER FOR MACHINERY
Shanghai Nuclear Engineering Research and Design Institute Co Ltd
Shanghai Automation Instrumentation 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 CHINA PRODUCTIVITY CENTER FOR MACHINERY, Shanghai Nuclear Engineering Research and Design Institute Co Ltd, Shanghai Automation Instrumentation Co Ltd filed Critical CHINA PRODUCTIVITY CENTER FOR MACHINERY
Priority to CN202011084930.1A priority Critical patent/CN112324934A/en
Publication of CN112324934A publication Critical patent/CN112324934A/en
Pending legal-status Critical Current

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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
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
    • F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
    • F16K3/26—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member
    • F16K3/267—Combination of a sliding valve and a lift valve
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/26—Sealings between relatively-moving surfaces with stuffing-boxes for rigid sealing rings
    • F16J15/30—Sealings between relatively-moving surfaces with stuffing-boxes for rigid sealing rings with sealing rings made of carbon
    • 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
    • F16K27/04—Construction of housing; Use of materials therefor of sliding valves
    • F16K27/041—Construction of housing; Use of materials therefor of sliding valves cylindrical slide valves
    • 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
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
    • F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
    • F16K3/26—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member
    • F16K3/265—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member with a sleeve sliding in the direction of the flow line
    • 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
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/30—Details
    • 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
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/30—Details
    • F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
    • 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
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/30—Details
    • F16K3/316—Guiding of the slide

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gasket Seals (AREA)
  • Sealing Devices (AREA)
  • Details Of Valves (AREA)

Abstract

The invention discloses a valve with a carbon graphite sealing ring, which comprises: install the case in the disk seat, many carbon graphite sealing rings are installed to the case lateral wall, carbon graphite sealing ring has connecting portion, the upper and lower staggered floor tongue-and-groove of connecting portion is connected. The invention solves the problem of valve sealing in the prior art, a plurality of carbon graphite sealing rings are arranged on the outer side wall of the valve core, the connecting parts of the carbon graphite sealing rings are connected by staggered mortises in the upper and lower layers, and the outer edges of the sealing rings are pressed on the inner wall of the sleeve by using the elastic force of materials to form sealing. The multi-seal structure is adopted, the guide area is increased, the sealing performance is improved, the control capacity and the stability of the valve are also improved, and the requirement on the rigidity of the spring of the actuating mechanism can be reduced due to the good self-lubricating performance of the M300T carbon graphite material, so that the purchase cost of the actuating mechanism is reduced.

Description

Valve with carbon graphite sealing ring
Technical Field
The invention relates to a valve, in particular to a valve with a carbon graphite sealing ring.
Background
In the prior art, a metal sealing ring of a common sleeve control valve has the defects of large friction force, high thermal expansion coefficient, poor wear resistance and poor guidance quality, and the inner surface of the sleeve is easily scratched under a high-temperature working condition to cause the valve to be jammed.
The carbon graphite sealing material has matrix material M300T, which is mainly composed of non-crystalline carbon and crystalline carbon, and has high hardness, good self-lubricating property, good mechanical strength and good wear resistance, and the maximum service temperature reaches 600 ℃.
Accordingly, the present invention is directed to a valve that utilizes a carbon graphite seal ring to achieve a multi-layer seal.
Disclosure of Invention
The above purpose of the invention is realized by the following technical scheme:
a valve having a carbon graphite seal ring, comprising: install the case in the disk seat, many carbon graphite sealing rings are installed to the case lateral wall, carbon graphite sealing ring has connecting portion, the upper and lower staggered floor tongue-and-groove of connecting portion is connected.
The valve with the carbon graphite sealing ring is characterized in that the number of the carbon graphite sealing rings is N, and the arrangement direction of each connecting part is staggered with the adjacent connecting part by an angle of 360 °/N.
The valve with the carbon graphite sealing rings is characterized in that the number of the carbon graphite sealing rings is three.
The valve with the carbon graphite sealing ring is characterized in that a groove for accommodating the carbon graphite sealing ring is formed in the side wall of the valve core; and the outer side edge of the carbon graphite sealing ring is tightly attached to the inner wall of the sleeve of the valve seat.
In conclusion, due to the adoption of the technical scheme, the valve solves the problem of valve sealing in the prior art, the outer side wall of the valve core is provided with the plurality of carbon graphite sealing rings, the connecting parts of the carbon graphite sealing rings are connected by the upper and lower staggered mortises, and the outer edges of the sealing rings are pressed against the inner wall of the sleeve by using the elastic force of the material so as to form sealing. The multi-seal structure is adopted, the guide area is increased, the sealing performance is improved, the control capacity and the stability of the valve are also improved, and the requirement on the rigidity of the spring of the actuating mechanism can be reduced due to the good self-lubricating performance of the M300T carbon graphite material, so that the purchase cost of the actuating mechanism is reduced. The use of the novel carbon graphite sealing ring solves the problem that the high-temperature working condition limits the use of the dynamic sealing structure of the valve core and the sleeve.
Drawings
FIG. 1 is a side view of a carbon graphite seal ring structure of a valve having a carbon graphite seal ring according to the present invention;
FIG. 2 is a schematic diagram of the valve of the present invention having a carbon graphite seal ring;
fig. 3 is an enlarged view of portion a of the valve of the present invention having a carbon graphite seal ring.
Detailed Description
The invention is further described below with reference to the following figures and examples:
fig. 1 is a side view of a carbon graphite sealing ring structure of a valve with a carbon graphite sealing ring according to the present invention, referring to fig. 1, a valve with a carbon graphite sealing ring 1, wherein the valve comprises: install case 2 in the disk seat, many carbon graphite sealing ring 1 are installed to 2 lateral walls of case, and carbon graphite sealing ring 1 has connecting portion, and the upper and lower staggered floor tongue-and-groove of connecting portion is connected. The connection structure is shown as a part in fig. 1, the connection part is a part which is connected and closed by a carbon graphite sealing ring 1, two ends of the connection part are respectively provided with a bulge, the bulge at one end is arranged above, the bulge at the other end is arranged below, and after the connection part is closed, the bulge above is arranged on the upper surface of the bulge below to form an annular structure, namely, the connection part adopts the mortise connection with staggered layers.
According to the invention, the upper and lower N carbon graphite sealing rings 1 are arranged on the groove of the upper sealing surface of the valve core 2 according to the requirement of the valve leakage grade, so that the problems of guiding and sealing under high temperature and high pressure are solved in the aspects of materials and structures. The falcon grooves on the staggered layers up and down at the joint of the sealing rings are connected, so that the wear resistance and the sealing performance are good.
Further, the carbon graphite sealing ring 1 is provided with N connecting parts, and the arrangement direction of each connecting part is staggered with the adjacent connecting part by an angle of 360 degrees/N. The opening direction of each sealing ring is staggered by 360 degrees/N, and the sealing rings are spaced at a certain distance, so that the guide area is increased, the shock resistance and the wear resistance are enhanced, and N seals are formed.
Further, the number of the carbon graphite sealing rings 1 is three.
Further, a groove for accommodating the carbon graphite sealing ring 1 is formed in the side wall of the valve core 2; the outer side edge of the carbon graphite sealing ring 1 is tightly attached to the inner wall of the sleeve 3 of the valve seat.
Fig. 2 is a schematic structural diagram of a valve with a carbon graphite sealing ring according to the present invention, fig. 3 is an enlarged view of a portion a of the valve with a carbon graphite sealing ring according to the present invention, and referring to fig. 2 and 3, in a specific use process of the present invention: when the valve core 2 moves, the carbon graphite ring on the valve core 2 is matched with the inner wall of the sleeve 3 in a sliding way to play a guiding role. When the valve core 2 is in a closed state, fluid medium enters the upper part of the sleeve 3 from the lower cavity of the valve through the balance hole of the valve core 2 and flows to the matching part of the valve core 2 and the sleeve 3, the carbon graphite sealing ring 1 plays a sealing role, and the fluid medium is prevented from flowing into the upper cavity of the valve through the matching surface of the valve core 2 and the sleeve 3.
After the invention is used, the problems of large friction force, high thermal expansion coefficient and low sealing grade of the common metal sealing ring are solved, the application range of the valve is improved, the highest use temperature of the sleeve 3 control valve is improved, the investment is saved, and the invention has higher use value.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that many modifications and variations can be made by those skilled in the art in light of the above teachings without the use of inventive faculty, or by software programming. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.

Claims (4)

1.一种具有碳石墨密封环的阀门，其特征在于，包括：阀座内安装有阀芯，所述阀芯外侧壁安装有多条碳石墨密封环，所述碳石墨密封环具有连接部，所述连接部上下错层榫槽连接。1. A valve with a carbon-graphite sealing ring, characterized by comprising: a valve core is installed in the valve seat, a plurality of carbon-graphite sealing rings are installed on the outer side wall of the valve core, and the carbon-graphite sealing ring has a connecting portion , the connecting part is connected by tongue and groove in upper and lower layers. 2.根据权利要求1所述的具有碳石墨密封环的阀门，其特征在于，所述碳石墨密封环具有N条，每一所述连接部的设置方向与相邻的所述连接部之间交错角度360°/N。2 . The valve with carbon-graphite sealing ring according to claim 1 , wherein the carbon-graphite sealing ring has N strips, and the setting direction of each connecting portion is between the adjacent connecting portions. 3 . Stagger angle 360°/N. 3.根据权利要求1所述的具有碳石墨密封环的阀门，其特征在于，所述碳石墨密封环具体为三条。3 . The valve with carbon-graphite sealing rings according to claim 1 , wherein, the carbon-graphite sealing rings are specifically three. 4 . 4.根据权利要求1所述的具有碳石墨密封环的阀门，其特征在于，所述阀芯侧壁开设有容置所述碳石墨密封环的凹槽；所述碳石墨密封环外侧边与所述阀座的套筒内壁紧贴。4. The valve with a carbon-graphite sealing ring according to claim 1, wherein a groove for accommodating the carbon-graphite sealing ring is opened on the side wall of the valve core; It is in close contact with the inner wall of the sleeve of the valve seat.
CN202011084930.1A 2020-10-12 2020-10-12 Valves with carbon graphite sealing rings Pending CN112324934A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011084930.1A CN112324934A (en) 2020-10-12 2020-10-12 Valves with carbon graphite sealing rings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011084930.1A CN112324934A (en) 2020-10-12 2020-10-12 Valves with carbon graphite sealing rings

Publications (1)

Publication Number Publication Date
CN112324934A true CN112324934A (en) 2021-02-05

Family

ID=74314815

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011084930.1A Pending CN112324934A (en) 2020-10-12 2020-10-12 Valves with carbon graphite sealing rings

Country Status (1)

Country Link
CN (1) CN112324934A (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN87206434U (en) * 1987-04-14 1988-08-03 徐冠英 Wedge shape compose type air sealing piston ring
CN2821295Y (en) * 2005-04-18 2006-09-27 杨占民 Indented combined metal seal ring
CN202418579U (en) * 2011-11-25 2012-09-05 铜陵市东方矿冶机械有限责任公司 Steam hammer piston sealing structure
CN107559449A (en) * 2017-10-20 2018-01-09 上海阀门厂股份有限公司 A kind of multi-state valve sealing structure
CN108167452A (en) * 2018-02-12 2018-06-15 无锡智能自控工程股份有限公司 Band metal coating type balanced seal annular sleeve valve
CN210530797U (en) * 2019-09-23 2020-05-15 百勤能源科技（惠州）有限公司 Soluble bridge plug capable of synchronously feeding balls
CN213899957U (en) * 2020-10-12 2021-08-06 上海自动化仪表有限公司 Valve with carbon graphite sealing ring

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN87206434U (en) * 1987-04-14 1988-08-03 徐冠英 Wedge shape compose type air sealing piston ring
CN2821295Y (en) * 2005-04-18 2006-09-27 杨占民 Indented combined metal seal ring
CN202418579U (en) * 2011-11-25 2012-09-05 铜陵市东方矿冶机械有限责任公司 Steam hammer piston sealing structure
CN107559449A (en) * 2017-10-20 2018-01-09 上海阀门厂股份有限公司 A kind of multi-state valve sealing structure
CN108167452A (en) * 2018-02-12 2018-06-15 无锡智能自控工程股份有限公司 Band metal coating type balanced seal annular sleeve valve
CN210530797U (en) * 2019-09-23 2020-05-15 百勤能源科技（惠州）有限公司 Soluble bridge plug capable of synchronously feeding balls
CN213899957U (en) * 2020-10-12 2021-08-06 上海自动化仪表有限公司 Valve with carbon graphite sealing ring

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Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
CB03 Change of inventor or designer information

Inventor after: Song Hui

Inventor after: Zhao Wanfu

Inventor after: Zhao Xudong

Inventor after: Chen Feng

Inventor after: Wang Xu

Inventor after: Tan Kun

Inventor after: Zhang Dongming

Inventor after: Luo Shuangyan

Inventor after: Wu Yichao

Inventor after: Yin Guohua

Inventor before: Song Hui

Inventor before: Zhao Wanfu

Inventor before: Zhao Xudong

Inventor before: Chen Feng

Inventor before: Wang Xu

Inventor before: Tan Kun

Inventor before: Zhang Dongming

Inventor before: Luo Shuangyan

Inventor before: Wu Yichao

Inventor before: Yin Guohua

CB03 Change of inventor or designer information
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20210205

WD01 Invention patent application deemed withdrawn after publication