CN109667933B - Axial sealing device and sealing method for hydraulic mechanical equipment - Google Patents
Axial sealing device and sealing method for hydraulic mechanical equipment Download PDFInfo
- Publication number
- CN109667933B CN109667933B CN201910001550.8A CN201910001550A CN109667933B CN 109667933 B CN109667933 B CN 109667933B CN 201910001550 A CN201910001550 A CN 201910001550A CN 109667933 B CN109667933 B CN 109667933B
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- rings
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- open
- pressing plate
- mechanical equipment
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- 238000007789 sealing Methods 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000003825 pressing Methods 0.000 claims abstract description 29
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Classifications
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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
- F16J15/061—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with positioning means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gasket Seals (AREA)
Abstract
The invention belongs to the technical field of design and manufacturing engineering of large-scale hydraulic mechanical equipment of a nuclear power station, and particularly relates to an axial sealing device and a sealing method of the hydraulic mechanical equipment, wherein the axial sealing device comprises the following steps: a plurality of nuts A, bolts, male and female fasteners, a pressing plate, jackscrews, two half-open rings and O-shaped rings; the two half-open rings are symmetrically fastened through bolts and nuts A; the circumference surface of each half open loop is uniformly provided with a plurality of screw holes, and jackscrews pass through the screw holes on the half open loop to fix the pressing plate on the upper surface of the half open loop; each pressing plate is provided with a threaded through hole, and the male and female fasteners penetrate through the threaded through holes on the pressing plates and are fixed on the pressing plates; the circumference of the lower surface of each semi-open ring is provided with a semi-circular groove, and the O-shaped ring is arranged in the semi-circular groove.
Description
Technical Field
The invention belongs to the technical field of design and manufacturing engineering of large-scale hydraulic mechanical equipment of a nuclear power plant, and particularly relates to an axial sealing device and a sealing method of hydraulic mechanical equipment.
Background
In the operation process of large-scale hydraulic mechanical equipment of a nuclear power station, the defect of leakage is not allowed to exist on each joint surface, so that the sealing performance of the sealing device of the hydraulic mechanical equipment is high. However, as only one radial O-shaped ring is arranged between the core-wrapped component and the cylinder body of the large hydraulic mechanical equipment for sealing, once the O-shaped ring is in failure, high-temperature medium leaks out, and the safe and stable operation of the equipment and the system is affected.
In order to prevent the sealing leakage between the core packaging part and the cylinder of the large hydraulic mechanical equipment, a sealing device for the core packaging part and the cylinder of the large hydraulic mechanical equipment of the nuclear power station is required to be designed so as to meet the sealing requirement of the large hydraulic mechanical equipment of the nuclear power station.
Disclosure of Invention
The invention aims to provide an axial sealing device and a sealing method for hydraulic mechanical equipment, which are used for solving the technical problem of sealing failure leakage between a core package component and a cylinder of large hydraulic mechanical equipment of a nuclear power station.
The technical scheme of the invention is as follows:
An axial sealing device of a hydraulic mechanical device, comprising: a plurality of nuts A, bolts, male and female fasteners, a pressing plate, jackscrews, two half-open rings and O-shaped rings; the two half-open rings are symmetrically fastened through bolts and nuts A; the circumference surface of each half open loop is uniformly provided with a plurality of screw holes, and jackscrews pass through the screw holes on the half open loop to fix the pressing plate on the upper surface of the half open loop; each pressing plate is provided with a threaded through hole, and the male and female fasteners penetrate through the threaded through holes on the pressing plates and are fixed on the pressing plates; the circumference of the lower surface of each semi-open ring is provided with a semi-circular groove, and the O-shaped ring is arranged in the semi-circular groove.
As described above, the left end and the right end of each semi-open ring are respectively welded with a connecting block, and a threaded through hole is formed in the middle of each connecting block.
Each male and female fastener also has a nut B mounted thereon as described above.
The semi-open radius matches the outside diameter of the hydromechanical device as described above.
The sealing position of the O-shaped ring is arranged at the joint between the core-wrapping part of the hydraulic mechanical equipment and the outside of the cylinder body.
A sealing method of an axial sealing device of a hydraulic mechanical equipment as described above, comprising the steps of:
Step one: screwing the threaded hole part of the male and female fastener into the original bolt of the equipment and screwing the threaded hole part of the male and female fastener into the original bolt of the equipment; combining the two half open loops together to form a complete circle; the bolts penetrate through holes of two connecting blocks welded on the two half open rings;
Step two: screwing the nut A into the bolt and tightening the nut A so that the two halves are opened to form a whole; the O-shaped ring is arranged in an annular groove in the lower end face of the semi-open ring; the whole of the two half-open rings provided with the O-shaped rings are concentrically contacted with the cylinder body of the equipment, and the sealing position of the O-shaped rings corresponds to the joint between the core package part of the hydraulic mechanical equipment and the outside of the cylinder body;
Step three: loading the pressing plate on the screw rod of the male and female fastener, screwing the nut B on the screw rod of the male and female fastener, and screwing; and screwing the jackscrew into the threaded hole of the pressing plate, wherein the end surface of the jackscrew is contacted with the end surface of the pressing plate.
And (3) symmetrically and uniformly fastening the two rings of jackscrews which are circumferentially arranged in the step (III) to uniformly compress the O-shaped rings in the two rings, and effectively sealing the joint between the core-spun part and the outside of the cylinder.
The invention has the following beneficial effects:
1. according to the axial sealing device of the hydraulic mechanical equipment, an external axial sealing device is additionally arranged at the joint between the core package part and the outside of the cylinder body, so that the axial sealing device is simple in structure and convenient to install;
2. The axial sealing device of the hydraulic mechanical equipment can effectively improve the sealing performance of the equipment, and the sealing method of the sealing device is simple in operation, convenient for operators to master, capable of improving the actual operation efficiency and reducing the leakage risk.
Drawings
FIG. 1 is a schematic structural view of an axial sealing device of a hydraulic mechanical device according to the present invention;
FIG. 2 is a cross-sectional view of an axial seal of a hydromechanical device according to the invention;
Wherein, 1-nut A, 2-bolt, 3-clamp plate, 4-jackscrew, 5-nut B, 6-male and female fastener, 7-half open loop, 8-O type circle.
Detailed Description
The technology of the present invention is further described below:
As shown in fig. 1 to 2, an axial sealing device for a hydraulic mechanical apparatus, comprising: a plurality of nuts A1, bolts 2, male and female fasteners 6, a pressing plate 3, jackscrews 4, two half-open rings 7 and O-shaped rings 8; the two half-open rings 7 are symmetrically fastened through bolts 2 and nuts A1; the circumferential surface of each half open ring 7 is uniformly provided with a plurality of screw holes, and jackscrews 4 pass through the screw holes on the half open rings 7 to fix the pressing plate 3 on the upper surface of the half open rings 7; each pressing plate 3 is provided with a threaded through hole, and a male and female fastener 6 passes through the threaded through hole on each pressing plate 3 and is fixed on each pressing plate 3; the circumference of the lower surface of each semi-open ring 7 is provided with a semicircular groove, and the O-shaped ring 8 is arranged in the semicircular groove.
The left end and the right end of each semi-open ring 7 are respectively welded with a connecting block, and a threaded through hole is formed in the middle of each connecting block.
Each of the male and female fasteners 6 is also mounted with a nut B5 as described above.
The radius of the semi-open loop 7 is matched to the outer diameter of the hydromechanical device as described above.
The sealing position of the O-ring 8 is arranged at the joint between the core-wrapping part of the hydraulic mechanical equipment and the outer part of the cylinder body.
A sealing method of an axial sealing device of a hydraulic mechanical equipment as described above, comprising the steps of:
Step one: screwing the threaded hole part of the male and female fastener 6 into the original bolt of the equipment and screwing the bolt; combining the two half-open rings 7 together to form a complete circle; the bolts 2 pass through the through holes of the two connecting blocks welded on the two half-open rings 7;
Step two: screwing the nut A1 into the bolt 2 and tightening the nut to form an integral body of the two half open rings 7; an O-shaped ring 8 is arranged in an annular groove in the lower end face of the half open ring 7; the whole of the two half open rings 7 provided with the O-shaped ring 8 is concentrically contacted with the cylinder of the equipment, and the sealing position of the O-shaped ring 8 corresponds to the joint between the core package part of the hydraulic mechanical equipment and the outside of the cylinder;
step three: the pressing plate 3 is arranged on the screw rod of the male and female fastener 6, and the nut B5 is screwed into the screw rod of the male and female fastener 6 and is screwed; the jackscrew 4 is screwed into the threaded hole of the pressing plate 3, and the end face of the jackscrew 4 is contacted with the end face of the pressing plate 3.
And in the third step, the two half-open rings 7 are symmetrically and uniformly fastened, and the circle of jackscrews 4 are circumferentially arranged, so that the O-shaped rings 8 in the two half-open rings 7 are uniformly compressed, and the joint between the core-spun part and the outside of the cylinder body is effectively sealed.
The axial sealing device of the hydraulic mechanical equipment and the sealing method thereof have simple structure, and an external axial sealing device can be added at the joint between the core package part and the outside of the cylinder body of the axial sealing device of the hydraulic mechanical equipment, so that the sealing performance of the equipment can be effectively improved.
The present invention has been described in detail with reference to the embodiments, but the present invention is not limited to the embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention. The invention may be practiced otherwise than as specifically described.
Claims (2)
1. A sealing method of an axial sealing device of hydraulic mechanical equipment is characterized by comprising the following steps: the axial sealing device of the hydraulic mechanical equipment comprises: the device comprises a plurality of nuts A (1), bolts (2), male and female fasteners (6), a pressing plate (3), jackscrews (4), two half-open rings (7) and O-shaped rings (8); the two half-open rings (7) are symmetrically fastened through bolts (2) and nuts A (1); the circumference surface of each semi-open ring (7) is uniformly provided with a plurality of screw holes, and jackscrews (4) penetrate through the screw holes on the semi-open rings (7) to fix the pressing plate (3) on the upper surface of the semi-open rings (7); each pressing plate (3) is provided with a threaded through hole, and a male fastener (6) penetrates through the threaded through hole on each pressing plate (3) to be fixed on each pressing plate (3); the circumference of the lower surface of each semi-open ring (7) is provided with a semicircular groove, and the O-shaped ring (8) is arranged in the semicircular groove;
the left end and the right end of each semi-open ring (7) are respectively welded with a connecting block, and a threaded through hole is formed in the middle of each connecting block
Each male and female fastener (6) is also provided with a nut B (5);
the radius of the semi-open ring (7) is matched with the outer diameter of the hydraulic mechanical equipment;
The sealing position of the O-shaped ring (8) is provided with a joint between the core package part of the hydraulic mechanical equipment and the outside of the cylinder;
the sealing method of the axial sealing device of the hydraulic mechanical equipment comprises the following steps:
step one: screwing the threaded hole part of the male and female fastener (6) into the original bolt of the equipment and screwing the bolt; combining the two half-open rings (7) together to form a complete circle; the bolts (2) penetrate through holes of two connecting blocks welded on the two semi-open rings (7);
step two: screwing the nut A (1) into the bolt (2) and tightening the nut A so that the two half open rings (7) form a whole; an O-shaped ring (8) is arranged in an annular groove in the lower end face of the semi-open ring (7); the whole of the two half-open rings (7) provided with the O-shaped rings (8) are concentrically contacted with the cylinder body of the equipment, and the sealing position of the O-shaped rings (8) corresponds to the joint between the core package part of the hydraulic mechanical equipment and the outside of the cylinder body;
Step three: the pressing plate (3) is arranged on the screw rod of the male and female fastener (6), and the nut B (5) is screwed on the screw rod of the male and female fastener (6) and is screwed down; the jackscrew (4) is screwed into the threaded hole of the pressing plate (3), and the end face of the jackscrew (4) is contacted with the end face of the pressing plate (3).
2. A method of sealing an axial seal of a hydromechanical device according to claim 1, wherein: and in the third step, two semi-open rings (7) are symmetrically and uniformly fastened, and a circle of jackscrews (4) are circumferentially arranged, so that O-shaped rings (8) in the two semi-open rings (7) are uniformly compressed, and the joint between the core package part and the outside of the cylinder body is effectively sealed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910001550.8A CN109667933B (en) | 2019-01-02 | 2019-01-02 | Axial sealing device and sealing method for hydraulic mechanical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910001550.8A CN109667933B (en) | 2019-01-02 | 2019-01-02 | Axial sealing device and sealing method for hydraulic mechanical equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109667933A CN109667933A (en) | 2019-04-23 |
| CN109667933B true CN109667933B (en) | 2024-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910001550.8A Active CN109667933B (en) | 2019-01-02 | 2019-01-02 | Axial sealing device and sealing method for hydraulic mechanical equipment |
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| Country | Link |
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Citations (12)
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|---|---|---|---|---|
| EP1233215A2 (en) * | 2001-02-15 | 2002-08-21 | Grundfos a/s | Ready to fit mechanical seal for the shaft of a pump |
| JP2002276525A (en) * | 2001-03-19 | 2002-09-25 | Kansai Electric Power Co Inc:The | Hydraulic machinery, and upper cover level adjusting method |
| CN202431589U (en) * | 2012-01-04 | 2012-09-12 | 广州市昕恒泵业制造有限公司 | Packing type friction pair sealing device |
| CN203463375U (en) * | 2013-08-15 | 2014-03-05 | 沈阳三科水力机械制造有限公司 | Core packaging structure for starting and stopping water feeding pump of nuclear power station |
| CN104764655A (en) * | 2015-03-25 | 2015-07-08 | 中国第一重型机械集团大连加氢反应器制造有限公司 | Adapter tube sealing device for hydrostatic test and use method thereof |
| CN105650403A (en) * | 2016-04-01 | 2016-06-08 | 西南石油大学 | Pipeline plugging device |
| CN105805484A (en) * | 2016-05-20 | 2016-07-27 | 湖北水之翼科技有限公司 | Half joint used for rush repair of PE water feed pipe |
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| CN107606152A (en) * | 2017-08-29 | 2018-01-19 | 浙江工业大学 | A kind of spring enhancing collocation structure of pressure container flange sealing |
| CN207777052U (en) * | 2018-01-05 | 2018-08-28 | 国家电网公司 | Pump turbine guide vane end clearance adjusts structure |
| CN209671608U (en) * | 2019-01-02 | 2019-11-22 | 江苏核电有限公司 | A kind of hydraulic mechanical equipment axial sealer |
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2019
- 2019-01-02 CN CN201910001550.8A patent/CN109667933B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1233215A2 (en) * | 2001-02-15 | 2002-08-21 | Grundfos a/s | Ready to fit mechanical seal for the shaft of a pump |
| JP2002276525A (en) * | 2001-03-19 | 2002-09-25 | Kansai Electric Power Co Inc:The | Hydraulic machinery, and upper cover level adjusting method |
| CN202431589U (en) * | 2012-01-04 | 2012-09-12 | 广州市昕恒泵业制造有限公司 | Packing type friction pair sealing device |
| CN203463375U (en) * | 2013-08-15 | 2014-03-05 | 沈阳三科水力机械制造有限公司 | Core packaging structure for starting and stopping water feeding pump of nuclear power station |
| CN104764655A (en) * | 2015-03-25 | 2015-07-08 | 中国第一重型机械集团大连加氢反应器制造有限公司 | Adapter tube sealing device for hydrostatic test and use method thereof |
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| CN106925977A (en) * | 2015-12-30 | 2017-07-07 | 江苏核电有限公司 | A kind of hydraulic power pump core-pulling device and method |
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| CN105805484A (en) * | 2016-05-20 | 2016-07-27 | 湖北水之翼科技有限公司 | Half joint used for rush repair of PE water feed pipe |
| CN107606152A (en) * | 2017-08-29 | 2018-01-19 | 浙江工业大学 | A kind of spring enhancing collocation structure of pressure container flange sealing |
| CN207777052U (en) * | 2018-01-05 | 2018-08-28 | 国家电网公司 | Pump turbine guide vane end clearance adjusts structure |
| CN209671608U (en) * | 2019-01-02 | 2019-11-22 | 江苏核电有限公司 | A kind of hydraulic mechanical equipment axial sealer |
Non-Patent Citations (1)
| Title |
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| 集装式机械密封装配培训静态试验装置研制;杨运忠;李健;张微;孙忠志;韩昇奎;刘星;;设备管理与维修(第06期);全文 * |
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| CN109667933A (en) | 2019-04-23 |
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