CN102094969A - Machining process for elastic sealing ring - Google Patents
Machining process for elastic sealing ring Download PDFInfo
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- CN102094969A CN102094969A CN2009102002176A CN200910200217A CN102094969A CN 102094969 A CN102094969 A CN 102094969A CN 2009102002176 A CN2009102002176 A CN 2009102002176A CN 200910200217 A CN200910200217 A CN 200910200217A CN 102094969 A CN102094969 A CN 102094969A
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Abstract
The invention discloses a machining process for an elastic sealing ring, which comprises the following steps of: blanking, machining preliminarily, cutting and opening, sizing, performing finish machining, shaping and checking, wherein pretightening force is loaded on the elastic sealing ring from the step of machining preliminarily to the step of shaping. By adopting the technical scheme of the machining process for the elastic sealing ring, the elastic sealing ring is small in wearing capacity under the using conditions of high temperature, high pressure, impact and vibration, can be opened freely, and is difficult to deform; the pretightening force is loaded on the elastic sealing ring during machining, so that the elastic sealing ring can be better sealed to improve the tightness and pressure stability of the elastic sealing ring; and the utilization rate of materials is high, the service life is long, and the cost is reduced substantially.
Description
Technical field
The present invention relates to a kind of processing technology that is positioned at the elastic sealing ring on the inner cylinder steam inlet cylindrical.
Background technique
In order to prevent that the steam turbine steam flow from flowing to the outer shell 3 from inner casing 1, must on the steam inlet outer circumferential face of inner casing 1, be provided with three circle annular grooves 10 and be used to install elastic sealing ring 2 (seeing Fig. 1 to Fig. 4), to guarantee the steam tightness requirement of cylinder steam inlet.The cross section of elastic sealing ring 2 is roughly rectangular, cuts off an opening 20 in whole circle elastic sealing ring 2, and the junction plane of the two-port 201,202 of this opening 20 is processed to identical mutually inclined-plane, plays good seal action.Preceding two-port 201,202 butt joint is installed draws back outwardly, installation back two-port 201,202 is also tight naturally, has avoided the steam of inner casing 1 steam inlet to leak from the port junction.On elastic sealing ring 2 one end faces, have simultaneously the groove 21 that branch such as a plurality of circumference is arranged.Space 210 radial outward that steam flow flows between elastic sealing ring 2 inner peripheral surfaces and inner casing 1 annular groove 10 bottom surfaces from each groove 21, the outer surface of elastic sealing ring 2 is pressed on the inner peripheral surface of outer shell 3, can prevents that steam from leaking from the steam inlet between the inside and outside cylinder 1,3.The external diameter of elastic sealing ring 2 under natural extended configuration makes that greater than the diameter of inner casing 1 steam inlet cylindrical elastic sealing ring 2 is free to rotate, thereby makes the surface of contact of seal ring 2 outer surfaces and outer shell 3 inner peripheral surfaces reach best seal request.
Summary of the invention
The objective of the invention is to overcome the defective of prior art, a kind of processing technology of elastic sealing ring is provided, it can increase substantially the quality of elastic sealing ring, the stock utilization height, and long service life, cost descends significantly.
A kind of technological scheme that realizes above-mentioned purpose is: a kind of processing technology of elastic sealing ring, the cross section of described elastic sealing ring is rectangular and have an opening, be provided with a plurality of grooves in uniform way on its end face, the junction plane of its opening two-port is the inclined-plane that coincide mutually, and the processing technology of described elastic sealing ring may further comprise the steps:
The blanking step, blanking after putting an effective margin by the height of the elastic sealing ring of described setting on the cylinder blank;
The preliminary working step, earlier cylindrical of setting by described elastic sealing ring and interior circular diameter and thickness divide roughing, semi finishing to carry out the cylindrical of turning elastic sealing ring, interior circle and thickness for twice respectively, divide the upper and lower end plane of roughing, twice grinding elastic sealing ring of semi finishing then;
The step of cutting opening, the bevel angle of setting by the junction plane of the opening two-port of described elastic sealing ring cuts described opening;
Fixating shape step is finalized the design to elastic sealing ring with heat treatment mode at twice;
The fine finishing step, earlier cylindrical and the interior circle to the elastic sealing ring processed carries out finish turning, the upper and lower end plane of elastic sealing ring finish grinded again; On an end face of described elastic sealing ring, mill the described a plurality of grooves of pin then; Last again the cylindrical and the interior circle of the elastic sealing ring processed carried out the finish turning standard.
The shaping step, the junction plane of the described opening two-port of refine, the i.e. inclined-plane that coincide mutually;
Checking procedure is measured earlier the chamfer length of the junction plane of the matching gap of junction plane of the opened gap of described elastic sealing ring, described opening two-port and described opening two-port, measures the circularity and the planeness of elastic sealing ring again;
When carrying out the preliminary working step, on elastic sealing ring, load pretightening force to the shaping step.
The processing technology of above-mentioned elastic sealing ring wherein, carries out also will carrying out de-stress heat treatment between roughing and the semi finishing at cylindrical and interior circle to described elastic sealing ring.
The processing technology of above-mentioned elastic sealing ring wherein, adopts special-purpose cylindrical turning instrument and boring instrument when the cylindrical of described elastic sealing ring and interior circle are carried out preparatory processing and fine finishing.
The processing technology of above-mentioned elastic sealing ring, wherein, to the end flat flat surface grinding instrument thick, employing special use when fine grinding is cut of described elastic sealing ring.
The processing technology of above-mentioned elastic sealing ring wherein, adopts special-purpose thread-cutting tool when cutting the opening of described elastic sealing ring.
After having adopted the technological scheme of processing technology of elastic sealing ring of the present invention, make elastic sealing ring wear extent under the condition of high temperature, high pressure, impact and vibrations little, and this elastic sealing ring free open is difficult for producing distortion, add and on elastic sealing ring, load pretightening force man-hour, be convenient to elastic sealing ring and better realize sealing, improve its sealing and pressure stability; Can make the stock utilization height again, long service life, cost descends significantly.
Description of drawings
Fig. 1 is the installation graph of a relation of elastic sealing ring and inner cylinder and outer shell;
Fig. 2 is the structural representation of elastic sealing ring free state;
Fig. 3 is the plan view of elastic sealing ring free state;
Fig. 4 is installed in the phase diagram of its opening two-port in the inner casing for elastic sealing ring.
Embodiment
In order to understand technological scheme of the present invention better, also be described in detail in conjunction with the accompanying drawings below by specific embodiment:
See also Fig. 1 to Fig. 4 earlier, the elastic sealing ring 2 of suit is the rectangular and cut trip ring in a cross section on the inner cylinder 1, its cylindrical Ф diameter under free extended configuration is greater than the outside diameter of inner cylinder 1 steam inlet, be provided with a plurality of grooves 21 on its end face in uniform way, the junction plane of the two-port 201,201 of its opening 20 is the inclined-plane that coincide mutually.
The processing technology of elastic sealing ring of the present invention may further comprise the steps:
The blanking step, blanking after putting an effective margin by the height of the elastic sealing ring of setting 2 on the cylinder blank;
The preliminary working step, the cylindrical and the interior circular diameter that adopt special-purpose cylindrical turning instrument and boring instrument to set by elastic sealing ring 2 earlier divide roughing, semi finishing to carry out the cylindrical of turning elastic sealing ring 2, interior circle and thickness for twice respectively, divide the upper and lower end plane of roughing, twice grinding elastic sealing ring of semi finishing then;
Carry out also will carrying out de-stress heat treatment between roughing and the semi finishing at cylindrical and interior circle to elastic sealing ring;
The step of cutting opening adopts special-purpose thread-cutting tool, press the bevel angle that the junction plane of the opening two-port of elastic sealing ring 2 sets and cuts opening 20;
Fixating shape step is finalized the design to elastic sealing ring with heat treatment mode at twice;
The fine finishing step adopts earlier special-purpose cylindrical turning instrument and boring instrument that the cylindrical and the interior circle of the elastic sealing ring processed are carried out finish turning, adopts special-purpose flat surface grinding instrument that the upper and lower end plane of elastic sealing ring is finish grinded again; Adopt milling machine on an end face of elastic sealing ring 2, to mill a plurality of grooves 21 of pin then; Last again the cylindrical and the interior circle of the elastic sealing ring processed carried out the finish turning standard.
The shaping step adopts special-purpose opening instrument of repairing and typing handling implement, the junction plane of refine opening two-port, the i.e. inclined-plane that coincide mutually;
Checking procedure is measured earlier the chamfer length of the junction plane of the matching gap of junction plane of opened gap, opening two-port of elastic sealing ring and opening two-port, measures the circularity and the planeness of elastic sealing ring again;
When carrying out the preliminary working step to the shaping step, on elastic sealing ring, load pretightening force, be convenient to elastic sealing ring and better realize sealing.
After having adopted the technological scheme of processing technology of elastic sealing ring of the present invention, make that elastic sealing ring wear extent under the condition of high temperature, high pressure, impact and vibrations is little, and the free open of this elastic sealing ring is difficult for producing distortion.Thereby guarantee elastic sealing ring quality of processing and required precision.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, and be not to be used as limitation of the invention, as long as in connotation scope of the present invention, all will drop in claims scope of the present invention the above embodiment's variation, modification.
Claims (5)
1. the processing technology of an elastic sealing ring, the cross section of described elastic sealing ring is rectangular and have an opening, be provided with a plurality of grooves in uniform way on its end face, the junction plane of its opening two-port is the inclined-plane that coincide mutually, it is characterized in that the processing technology of described elastic sealing ring may further comprise the steps:
The blanking step, blanking after putting an effective margin by the height of the elastic sealing ring of described setting on the cylinder blank;
The preliminary working step, earlier cylindrical of setting by described elastic sealing ring and interior circular diameter and thickness divide roughing, semi finishing to carry out the cylindrical of turning elastic sealing ring, interior circle and thickness for twice respectively, divide the upper and lower end plane of roughing, twice grinding elastic sealing ring of semi finishing then;
The step of cutting opening, the bevel angle of setting by the junction plane of the opening two-port of described elastic sealing ring cuts described opening;
Fixating shape step is finalized the design to elastic sealing ring with heat treatment mode at twice;
The fine finishing step, earlier cylindrical and the interior circle to the elastic sealing ring processed carries out finish turning, the upper and lower end plane of elastic sealing ring finish grinded again; On an end face of described elastic sealing ring, mill the described a plurality of grooves of pin then; Last again the cylindrical and the interior circle of the elastic sealing ring processed carried out the finish turning standard.
The shaping step, the junction plane of the described opening two-port of refine, the i.e. inclined-plane that coincide mutually;
Checking procedure is measured earlier the chamfer length of the junction plane of the matching gap of junction plane of the opened gap of described elastic sealing ring, described opening two-port and described opening two-port, measures the circularity and the planeness of elastic sealing ring again;
When carrying out the preliminary working step, on elastic sealing ring, load pretightening force to the shaping step.
2. the processing technology of elastic sealing ring according to claim 1 is characterized in that, carries out also will carrying out de-stress heat treatment between roughing and the semi finishing at cylindrical and interior circle to described elastic sealing ring.
3. the processing technology of elastic sealing ring according to claim 1 is characterized in that, adopts special-purpose cylindrical turning instrument and boring instrument when the cylindrical of described elastic sealing ring and interior circle are carried out preparatory processing and fine finishing.
4. the processing technology of elastic sealing ring according to claim 1 is characterized in that, to the end flat flat surface grinding instrument thick, employing special use when fine grinding is cut of described elastic sealing ring.
5. the processing technology of elastic sealing ring according to claim 1 is characterized in that, adopts special-purpose thread-cutting tool when cutting the opening of described elastic sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102002176A CN102094969A (en) | 2009-12-10 | 2009-12-10 | Machining process for elastic sealing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102002176A CN102094969A (en) | 2009-12-10 | 2009-12-10 | Machining process for elastic sealing ring |
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| Publication Number | Publication Date |
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| CN102094969A true CN102094969A (en) | 2011-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009102002176A Pending CN102094969A (en) | 2009-12-10 | 2009-12-10 | Machining process for elastic sealing ring |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102501008A (en) * | 2011-10-26 | 2012-06-20 | 哈尔滨汽轮机厂有限责任公司 | Method for processing sealing ring |
| CN102513795A (en) * | 2011-12-30 | 2012-06-27 | 重庆清平机械厂 | Arc opening part machining process |
| CN102649164A (en) * | 2012-04-28 | 2012-08-29 | 浙江坤博机械制造有限公司 | Machining method for stainless steel seal rings in large valves |
| CN103090001A (en) * | 2012-11-16 | 2013-05-08 | 常州新瑞汽车配件制造有限公司 | Process for machining seal ring, having new structure, of turbocharger |
| CN103343818A (en) * | 2013-06-30 | 2013-10-09 | 贵州凯星液力传动机械有限公司 | Method for processing nonmetal seal ring |
| CN105952891A (en) * | 2016-06-27 | 2016-09-21 | 上海默作精密仪器有限公司 | Elastic metal sealing ring |
| CN107932009A (en) * | 2017-12-19 | 2018-04-20 | 苏州中骏木工机械配件有限公司 | A kind of part manufacture craft using aluminium alloy cutter |
| CN112621112A (en) * | 2020-11-30 | 2021-04-09 | 中国航发动力股份有限公司 | Method for manufacturing high-temperature alloy elastic piston ring |
| CN112719792A (en) * | 2020-12-15 | 2021-04-30 | 山西江淮重工有限责任公司 | Processing method of opening thin-wall wedge ring and positioning and clamping device |
-
2009
- 2009-12-10 CN CN2009102002176A patent/CN102094969A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102501008A (en) * | 2011-10-26 | 2012-06-20 | 哈尔滨汽轮机厂有限责任公司 | Method for processing sealing ring |
| CN102513795A (en) * | 2011-12-30 | 2012-06-27 | 重庆清平机械厂 | Arc opening part machining process |
| CN102649164A (en) * | 2012-04-28 | 2012-08-29 | 浙江坤博机械制造有限公司 | Machining method for stainless steel seal rings in large valves |
| CN103090001A (en) * | 2012-11-16 | 2013-05-08 | 常州新瑞汽车配件制造有限公司 | Process for machining seal ring, having new structure, of turbocharger |
| CN103343818A (en) * | 2013-06-30 | 2013-10-09 | 贵州凯星液力传动机械有限公司 | Method for processing nonmetal seal ring |
| CN105952891A (en) * | 2016-06-27 | 2016-09-21 | 上海默作精密仪器有限公司 | Elastic metal sealing ring |
| CN107932009A (en) * | 2017-12-19 | 2018-04-20 | 苏州中骏木工机械配件有限公司 | A kind of part manufacture craft using aluminium alloy cutter |
| CN112621112A (en) * | 2020-11-30 | 2021-04-09 | 中国航发动力股份有限公司 | Method for manufacturing high-temperature alloy elastic piston ring |
| CN112719792A (en) * | 2020-12-15 | 2021-04-30 | 山西江淮重工有限责任公司 | Processing method of opening thin-wall wedge ring and positioning and clamping device |
| CN112719792B (en) * | 2020-12-15 | 2023-02-28 | 山西江淮重工有限责任公司 | Processing method of opening thin-wall wedge ring and positioning and clamping device |
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Application publication date: 20110615 |