CN114233854A - Metal self-sealing ring for valve, machining tool and machining method - Google Patents
Metal self-sealing ring for valve, machining tool and machining method Download PDFInfo
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- CN114233854A CN114233854A CN202111619926.5A CN202111619926A CN114233854A CN 114233854 A CN114233854 A CN 114233854A CN 202111619926 A CN202111619926 A CN 202111619926A CN 114233854 A CN114233854 A CN 114233854A
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- sealing ring
- ring body
- sealing
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- tool
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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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/08—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
- B24B41/067—Work supports, e.g. adjustable steadies radially supporting workpieces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/36—Single-purpose machines or devices
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lift Valve (AREA)
Abstract
The invention relates to the technical field of valves, and particularly discloses a metal self-sealing ring for a valve, a machining tool and a machining method.
Description
Technical Field
The invention belongs to the technical field of valves, and particularly relates to a metal self-sealing ring for a valve, a machining tool and a machining method.
Background
According to the sealing principle, the middle cavity sealing of the valve can be divided into two categories, namely forced sealing and pressure self-sealing. The pressure self-sealing is one of the sealing forms commonly used in high temperature and high pressure in the valve industry, and is characterized by compact structure, wide range of working parameters and good sealing performance under high temperature and high pressure working conditions. The pressure self-sealing structure is provided with a self-sealing ring, and the sealing force specific pressure on the self-sealing ring consists of two parts, namely, pre-tightening sealing specific pressure and specific pressure formed by medium pressure. The initial sealing specific pressure of the self-sealing ring is generated by pre-tightening of the pre-tightening stud; the valve cover is pushed under the action of medium pressure to form working pressure specific pressure, the higher the medium pressure in the valve is, the higher the working sealing specific pressure is, and the better the sealing performance is.
According to the material of self sealss, the self sealss circle can be divided into soft sealing washer and the hard sealing washer of metal two kinds. The soft sealing ring is usually made of flexible graphite, natural fibers and the like, the maximum applicable medium pressure can reach 35MPa, the working temperature is-50 to-600 ℃, the sealing is easy to realize, but the soft sealing material has the defects of low strength, high pressure, easiness in crushing and ablation loss at high temperature.
For the valve with the use pressure of more than 35MPa or the use temperature of more than 570 ℃, in order to improve the reliability of the valve, a metal hard self-sealing ring made of metal materials is needed. The metal hard sealing ring has the advantages of strong bearing capacity, reliable performance after sealing and long service cycle. The defects of the method are that the sealing deformation is small, the required processing precision is high, the pre-tightening pressure is large, the one-time sealing success rate is low, the machining is easy to deform, the surface is easy to damage and scrap, and the like. Most of metal self-sealing rings produced by valve manufacturers are deformed after the clamps are loosened after the metal self-sealing rings are machined.
Disclosure of Invention
The invention aims to provide a metal self-sealing ring for a valve, a processing tool and a processing method, wherein the self structure of a sealing ring body is beneficial to deformation of the sealing ring body, so that the success rate of primary sealing is improved, the pretightening force is reduced, and the sealing reliability is improved; the processing tool is simple in structure and low in manufacturing cost, the outer circle of the sealing ring body is clamped to enable the sealing ring body to be stressed uniformly, deformation of the sealing ring body is avoided, and the processing efficiency of the sealing ring body is improved obviously; the processing method of the invention reduces the deformation of the sealing ring body during processing, reduces the rejection rate of blanks during processing, and obviously improves the success rate of the sealing ring.
In order to solve the technical problem, the invention provides a metal self-sealing ring for a valve, which comprises a sealing ring body, wherein the sealing ring body is annular, the lower part of the excircle of the sealing ring body is provided with a boss part, the outer wall of the boss part is provided with an outer elastic groove, the inner hole of the sealing ring body comprises an upper straight hole section and a lower conical section which are sequentially connected, and the inner wall of the lower conical section is provided with an inner elastic groove.
Further, the lower conical section forms a sealing angle of 55-65 degrees with the bottom surface of the sealing ring body.
Further, the seal ring body is made of soft iron and low-carbon austenitic stainless steel materials.
The invention also provides a processing tool of the metal self-sealing ring for the valve, which is used for clamping the sealing ring body, the processing tool is an annular body with a notch, and the inner circle of the processing tool is matched with the outer circle of the upper part of the sealing ring body.
Furthermore, the notch of the processing tool is arranged along the longitudinal direction of the annular body and penetrates through the whole annular body, and the width of the notch is 3-6 mm.
Further, the material of processing frock is medium carbon steel metal.
The invention also provides a processing method of the metal self-sealing ring for the valve, which is used for processing the sealing ring body and comprises the following steps:
s1, mounting the blank of the sealing ring body on a machine tool, reversely clamping the inner circle of the sealing ring body by using a chuck of the machine tool, and processing the upper part of the outer circle of the sealing ring body;
s2, sleeving a machining tool on the outer circle of the upper part of the sealing ring body, clamping the machining tool by using a machine tool chuck, sequentially machining the straight hole section of the upper part and the conical section of the lower part of the inner hole of the sealing ring body, machining the boss part of the outer circle of the sealing ring body, and finally machining an inner elastic groove and an outer elastic groove;
s3, grinding the lower conical section of the inner hole of the sealing ring body and the boss part of the outer circle of the sealing ring body.
Further, the processing tool is an annular body with a notch, the notch of the processing tool is arranged along the longitudinal direction of the annular body and penetrates through the whole annular body, and the width of the notch is 3-6 mm.
The invention has the beneficial effects that: the metal self-sealing ring for the valve has small structure pretightening force and easy deformation, and improves the sealing reliability; the processing tool is simple in structure and low in manufacturing cost, the outer circle of the sealing ring body is clamped to enable the sealing ring body to be stressed uniformly, deformation of the sealing ring body is avoided, and the processing efficiency of the sealing ring body is improved obviously; the processing method of the invention reduces the deformation of the sealing ring body during processing, reduces the rejection rate of blanks during processing, and obviously improves the success rate of the sealing ring.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural view of a metallic self-sealing ring for a valve according to the present invention;
FIG. 2 is a schematic view of a machining tool for a metal self-sealing ring for a valve according to the present invention;
FIG. 3 is a schematic view of the machining tool for the metal self-sealing ring for the valve clamping the sealing ring body;
fig. 4 is a schematic view of step S1 of the method for processing a metallic self-sealing ring for a valve according to the present invention;
fig. 5 is a schematic view of step S2 of the method for processing a metallic self-sealing ring for a valve according to the present invention;
fig. 6 is a schematic view of step S3 of the method for processing a metallic self-sealing ring for a valve according to the present invention;
in the figure: 1-a sealing ring body, 2-an outer elastic groove, 3-an upper straight hole section, 4-a lower conical section, 5-an inner elastic groove, 6-a sealing angle, 7-an upper excircle, 8-a processing tool and 9-a machine tool chuck.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the specification of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In one embodiment of the present invention, as shown in fig. 1, a metallic self-sealing ring for a valve comprises a sealing ring body 1, the sealing ring body 1 is made of soft iron and low-carbon austenitic stainless steel, the sealing ring body 1 is ring-shaped, the lower part of the outer circle of the sealing ring body 1 is a boss part, the outer wall of the boss part is provided with an outer elastic groove 2, the inner hole of the sealing ring body 1 comprises an upper straight hole section 3 and a lower tapered section 4 which are connected in sequence, the inner wall of the lower tapered section 4 is provided with an inner elastic groove 5, the inner elastic groove 5 is generally designed at 1/2-2/3 of the lower tapered section 4, the outer elastic groove 2 is generally designed at 1/2-2/3 of the boss part, the sizes of the inner elastic groove 5 and the outer elastic groove 2 are both 2-5mm in radius, the design of the inner elastic groove 5 and the outer elastic groove 2 can reduce the rigidity of the sealing ring body 1, so that the sealing ring is easier to deform to form sealing when being pressed.
The lower conical section 4 and the bottom surface of the sealing ring body 1 form a sealing angle 6 of 55-65 degrees, generally, the sealing angle 6 can be designed to be 61 degrees, the corresponding valve cover part can be designed to be 60 degrees, so that an angle difference of 1-2 degrees can be formed, and the design of the angle difference can ensure that the sealing ring body 1 with lower rigidity is easier to deform to be mutually attached and sealed when the valve cover presses the sealing ring body 1.
Referring to fig. 2, the machining tool for the metal self-sealing ring for the valve is used for clamping a sealing ring body 1, the machining tool 8 is made of medium carbon steel metal, the machining tool 8 is an annular body with a notch, the notch of the machining tool 8 is arranged along the longitudinal direction of the annular body and penetrates through the whole annular body, and the width t of the notch is 3-6 mm.
As shown in fig. 3, the basic size of the inner circle of the processing tool 8 is the same as the size of the outer circle 7 at the upper part of the sealing ring body 1, and the basic hole is adopted to manufacture the matching size. The processing tool 8 is simple in structure, and can ensure that the outer circle of the sealing ring body 1 is uniformly stressed during clamping, so that the deformation of the sealing ring body 1 is avoided.
A processing method of a metal self-sealing ring for a valve is used for processing a sealing ring body 1, and comprises the following steps:
s1, as shown in figure 4, installing the blank of the sealing ring body 1 on a machine tool, reversely clamping the inner circle of the sealing ring body 1 by a machine tool chuck 9, and processing the upper part of the outer circle of the sealing ring body 1;
s2, as shown in FIG. 5, the machining tool 8 is sleeved on the upper excircle 7 of the sealing ring body 1, so that the excircle of the sealing ring body 1 can be uniformly stressed, the deformation of the sealing ring body 1 is avoided, and then the machining tool 8 is clamped by the machine tool chuck 9, so that the machining efficiency of the whole sealing ring body 1 is obviously improved; then, sequentially processing an upper straight hole section 3 and a lower conical section 4 of an inner hole of the sealing ring body 1, processing a boss part of the excircle of the sealing ring body 1, and finally processing an inner elastic groove 5 and an outer elastic groove 2;
s3, grinding the lower conical section 4 of the inner hole of the sealing ring body 1 and the boss part of the outer circle of the sealing ring body 1 as shown in figure 6.
The metal self-sealing ring for the valve has small structure pretightening force and easy deformation, and improves the sealing reliability; the processing tool is simple in structure and low in manufacturing cost, the outer circle of the sealing ring body is clamped to enable the sealing ring body to be stressed uniformly, deformation of the sealing ring body is avoided, and the processing efficiency of the sealing ring body is improved obviously; the processing method of the invention reduces the deformation of the sealing ring body during processing, reduces the rejection rate of blanks during processing, and obviously improves the success rate of the sealing ring.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, therefore, the present invention is not limited by the appended claims.
Claims (8)
1. The utility model provides a metal is from sealing washer for valve, its characterized in that, includes sealing washer body (1), sealing washer body (1) is the annular form, establish to boss portion in the excircle lower part of sealing washer body (1), be equipped with outer elastic groove (2) on the outer wall of boss portion, the hole of sealing washer body (1) is including upper portion straight hole section (3) and lower part toper section (4) that connect gradually, be equipped with interior elastic groove (5) on the inner wall of lower part toper section (4).
2. A metallic self-sealing ring for valves according to claim 1, characterized in that the lower conical section (4) forms a sealing angle (6) of 55-65 ° with the bottom surface of the sealing ring body (1).
3. The metallic self-sealing ring for valves according to claim 1, characterized in that the sealing ring body (1) is made of soft iron and austenitic stainless steel materials.
4. The utility model provides a processing frock of metal self-sealing ring for valve for centre gripping sealing washer body (1), its characterized in that, processing frock is the notched ring form body, the interior circle of processing frock with upper portion excircle (7) of sealing washer body (1) cooperate.
5. The tool for machining the metal self-sealing ring for the valve according to claim 4, wherein a notch of the tool is formed in the longitudinal direction of the annular body and penetrates through the entire annular body, and the width of the notch is 3-6 mm.
6. The processing tool for the metal self-sealing ring for the valve according to claim 4, wherein the processing tool is made of medium carbon steel.
7. A processing method of a metal self-sealing ring for a valve is used for processing a sealing ring body (1), and is characterized by comprising the following steps:
s1, mounting the blank of the sealing ring body on a machine tool, reversely clamping the inner circle of the sealing ring body by using a chuck of the machine tool, and processing the upper part of the outer circle of the sealing ring body;
s2, sleeving a machining tool on the outer circle of the upper part of the sealing ring body, clamping the machining tool by using a machine tool chuck, sequentially machining the straight hole section of the upper part and the conical section of the lower part of the inner hole of the sealing ring body, machining the boss part of the outer circle of the sealing ring body, and finally machining an inner elastic groove and an outer elastic groove;
s3, grinding the lower conical section of the inner hole of the sealing ring body and the boss part of the outer circle of the sealing ring body.
8. The method for processing the metal self-sealing ring for the valve according to claim 7, wherein the processing tool is an annular body with a notch, the notch of the processing tool is arranged along the longitudinal direction of the annular body and penetrates through the entire annular body, and the width of the notch is 3-6 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111619926.5A CN114233854A (en) | 2021-12-28 | 2021-12-28 | Metal self-sealing ring for valve, machining tool and machining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111619926.5A CN114233854A (en) | 2021-12-28 | 2021-12-28 | Metal self-sealing ring for valve, machining tool and machining method |
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| Publication Number | Publication Date |
|---|---|
| CN114233854A true CN114233854A (en) | 2022-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111619926.5A Pending CN114233854A (en) | 2021-12-28 | 2021-12-28 | Metal self-sealing ring for valve, machining tool and machining method |
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| CN (1) | CN114233854A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202668333U (en) * | 2012-06-19 | 2013-01-16 | 徐州丰禾回转支承制造有限公司 | Tooling for fixing outer ring |
| CN103527787A (en) * | 2013-11-01 | 2014-01-22 | 南通市电站阀门有限公司 | Metal seal ring convenient to dismantle and power station regulating valve with metal seal ring |
| CN104896094A (en) * | 2015-06-10 | 2015-09-09 | 自贡鑫剑密封科技有限公司 | Self-sealing ring and machining method thereof |
| CN207387165U (en) * | 2017-09-14 | 2018-05-22 | 杭州南华汽车配件有限公司 | A kind of turning tool for transfer case transparent cover |
| CN207406771U (en) * | 2017-09-19 | 2018-05-25 | 上海上电漕泾发电有限公司 | A kind of septum valve suitable for varying load condition |
| CN208179049U (en) * | 2018-05-11 | 2018-12-04 | 沈阳建筑大学 | A kind of Bidirectional opening type roundness control device for bearing outer ring processing |
| CN208451077U (en) * | 2018-04-26 | 2019-02-01 | 成都润封电碳有限公司 | A kind of nonmetallic piston ring machining tooling |
| JP2020075312A (en) * | 2018-11-06 | 2020-05-21 | 株式会社ジェイテクト | Turning device and turning method |
-
2021
- 2021-12-28 CN CN202111619926.5A patent/CN114233854A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202668333U (en) * | 2012-06-19 | 2013-01-16 | 徐州丰禾回转支承制造有限公司 | Tooling for fixing outer ring |
| CN103527787A (en) * | 2013-11-01 | 2014-01-22 | 南通市电站阀门有限公司 | Metal seal ring convenient to dismantle and power station regulating valve with metal seal ring |
| CN104896094A (en) * | 2015-06-10 | 2015-09-09 | 自贡鑫剑密封科技有限公司 | Self-sealing ring and machining method thereof |
| CN207387165U (en) * | 2017-09-14 | 2018-05-22 | 杭州南华汽车配件有限公司 | A kind of turning tool for transfer case transparent cover |
| CN207406771U (en) * | 2017-09-19 | 2018-05-25 | 上海上电漕泾发电有限公司 | A kind of septum valve suitable for varying load condition |
| CN208451077U (en) * | 2018-04-26 | 2019-02-01 | 成都润封电碳有限公司 | A kind of nonmetallic piston ring machining tooling |
| CN208179049U (en) * | 2018-05-11 | 2018-12-04 | 沈阳建筑大学 | A kind of Bidirectional opening type roundness control device for bearing outer ring processing |
| JP2020075312A (en) * | 2018-11-06 | 2020-05-21 | 株式会社ジェイテクト | Turning device and turning method |
Non-Patent Citations (1)
| Title |
|---|
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