CN111442092A - Mechanical sealing device for closed integrated spring compensation static ring assembly - Google Patents
Mechanical sealing device for closed integrated spring compensation static ring assembly Download PDFInfo
- Publication number
- CN111442092A CN111442092A CN202010316861.6A CN202010316861A CN111442092A CN 111442092 A CN111442092 A CN 111442092A CN 202010316861 A CN202010316861 A CN 202010316861A CN 111442092 A CN111442092 A CN 111442092A
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- Prior art keywords
- ring
- static ring
- static
- seat
- gland
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- 230000003068 static effect Effects 0.000 title claims abstract description 154
- 238000007789 sealing Methods 0.000 title claims abstract description 57
- 210000004907 gland Anatomy 0.000 claims abstract description 48
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 claims 1
- 238000002425 crystallisation Methods 0.000 abstract description 6
- 230000008025 crystallization Effects 0.000 abstract description 6
- 238000009434 installation Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000000903 blocking effect Effects 0.000 abstract 1
- 238000009833 condensation Methods 0.000 description 5
- 230000005494 condensation Effects 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 4
- 230000001174 ascending effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
Images
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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3436—Pressing means
- F16J15/3452—Pressing means the pressing force resulting from the action of a spring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Sealing (AREA)
Abstract
The invention discloses a mechanical sealing device for a closed integrated spring compensation static ring assembly, which comprises a dynamic ring assembly and a static ring assembly; the static ring component consists of a static ring (1), a static ring sliding seal ring (2), a static ring seat (3), a static ring seat sliding seal ring (4), a static ring anti-rotation pin (5), a static ring seat anti-rotation pin (6), a compensation spring (7), a gland (8) and a static ring seat limiting screw (9); its quiet ring, quiet ring holder, the mutual cooperation structure of gland make quiet ring holder and gland between inner chamber (80) sealed, use compensating spring to be in sealed intracavity and seal the protection, during the medium can not enter into compensating spring and spring mount pad hole, can not lead to spring compensation to become invalid because of the condensing of medium or crystallization blocking compensating spring to make quiet ring subassembly and gland collection dress together through quiet ring holder stop screw, manufacturing, transportation, installation convenient to use.
Description
Technical Field
The invention relates to a mechanical sealing device, in particular to a mechanical sealing device for closing and integrating a spring compensation static ring assembly.
Background
The mechanical sealing device is composed of a movable ring component and a static ring component, and is divided into a movable ring compensation mechanical sealing device and a static ring compensation mechanical sealing device.
The movable ring component of the static ring compensation mechanical sealing device comprises a movable ring, a movable ring seat, a movable ring sealing ring and a movable ring transmission pin; the movable ring is fixedly arranged on the movable ring seat, a movable ring sealing ring is arranged between the matching surfaces of the movable ring seat and the movable ring, the movable ring seat is arranged on the shaft or the shaft sleeve, a movable ring seat sealing ring is arranged between the matching surfaces of the movable ring seat and the shaft or the shaft sleeve, and a movable ring transmission pin is arranged between the movable ring seat and the shaft or the shaft sleeve.
The static ring component of the static ring compensation mechanical sealing device comprises a static ring, a static ring seat, a static ring sliding sealing ring, a compensation spring, a static ring anti-rotation pin and a gland; the static ring is arranged on the static ring seat in a sliding fit manner, a static ring sliding sealing ring is arranged between the matching surfaces of the static ring and the static ring seat, a static ring anti-rotation pin is arranged between the rear end of the static ring and the static ring seat, a plurality of compensation springs which are uniformly distributed on the circumference are arranged between the rear end of the static ring and the static ring seat, and the static ring seat is fixedly connected with the gland; or the gland replaces the static ring seat, and the static ring sliding sealing ring, the compensating spring and the static ring anti-rotating pin are directly installed in a matching way with the gland.
The mechanical sealing device has different working conditions according to different media, and the specific matching structures of the movable ring assembly and the static ring assembly are different respectively so as to meet the design and use requirements.
The mechanical sealing device of the spring compensation static ring in the prior art is provided with a static ring sliding sealing ring between a gland and the outer circular surface of the static ring, and is provided with a static ring sliding sealing ring retaining ring and a spring push ring, and can seal the axial direction of the outer circular surface of the static ring, namely, a leakage channel between the outer circular surface of the static ring and the gland is sealed, the medium in a mechanical sealing inner cavity (the outer circular cavity of the static ring) can not directly enter a compensation spring, so that impurities in the medium can be prevented from entering a compensation spring and a compensation spring seat hole, the compensation spring is blocked, and the working performance of the compensation spring is protected. However, leakage liquid on the end faces of the static ring and the moving ring splashes along with the rotation of the shaft and enters the compensation spring and the compensation spring seat hole from the outer side (atmosphere end) of the sealing device, impurities in leakage media slowly accumulate in the compensation spring and the compensation spring seat hole, particularly, normal-temperature condensation media and normal-temperature crystallization media block the compensation spring due to the condensation or crystallization of the media, so that the compensation failure and the mechanical sealing failure of the spring are caused, and the service life of the mechanical sealing device cannot reach the expectation. And the mechanical sealing device can not be applied in the forward and reverse directions, if the medium on the side directly enters the compensating spring and the compensating spring seat hole, the medium is condensed or crystallized to directly block the compensating spring.
And each component part of the spring compensation static ring component in the prior art can not be integrated, so that the spring compensation static ring component is particularly not suitable for vertical installation and use and is inconvenient to transport, install and use.
Disclosure of Invention
The invention aims to provide a mechanical sealing device for a closed integrated spring compensation static ring assembly, which not only integrates the spring compensation static ring assembly together for convenient installation and use, but also fully seals and protects a compensation spring so as to prevent a medium and medium impurities from entering a compensation spring part to be condensed or crystallized to cause the blockage of the compensation spring and prolong the service life; the pump is particularly suitable for sealing the transmission medium under the harsh conditions of normal-temperature condensation, normal-temperature crystallization and the like, and is particularly suitable for the working conditions that the pressure is less than or equal to 4.2Mpa, the temperature is less than or equal to 176 ℃, the rotating speed is less than or equal to 6000RPM, and the viscosity of the transmission medium is 20000-one 70000 cp.
The invention discloses a mechanical sealing device for a closed integrated spring compensation static ring assembly, which comprises a dynamic ring assembly and a static ring assembly;
the movable ring component comprises a movable ring, a movable ring seat, a movable ring sealing ring and a movable ring transmission pin;
the static ring component comprises a static ring 1, a static ring sliding seal ring 2, a static ring seat 3, a static ring seat sliding seal ring 4, a static ring rotation-preventing pin 5, a static ring seat rotation-preventing pin 6, a compensating spring 7, a gland 8 and a static ring seat limiting screw 9.
The excircle of the static ring 1 is in sliding fit with the gland 8, and a sealing groove and a static ring sliding sealing ring 2 are arranged on the sliding fit surface of the gland 8 and the excircle of the static ring 1.
The stationary ring seat 3 is in a ring sleeve shape, and the inner circular surface of the rear end part of the stationary ring 1 is closely and fixedly matched and connected with the outer circular surface of the front end part of the stationary ring seat 3; the outer circle surface of the rear part of the static ring seat 3 is in sliding fit with the gland 8, and a sealing groove and a static ring sliding sealing ring 4 are arranged on the sliding fit surface of the gland 8 and the outer circle of the static ring seat 3.
Seted up excircle boss fender ring 31 on quiet ring seat 3, fixed connection quiet ring rotational pin 5 on the left side terminal surface of the excircle boss fender ring 31 of quiet ring seat, correspond at 1 right-hand member of quiet ring and set up quiet ring rotational pin groove 32, quiet ring rotational pin 5 prevents changeing quiet ring 1 with quiet ring rotational pin groove 32 cooperation on the quiet ring seat.
The fixed ring seat anti-rotation pin 6 is fixedly connected to the right end face of the excircle boss retaining ring 31 of the fixed ring seat, the fixed ring seat anti-rotation pin groove 81 is correspondingly formed in the gland 8, and the fixed ring seat anti-rotation pin 6 is matched with the fixed ring seat anti-rotation pin groove 81 in the gland to prevent rotation of the fixed ring seat 3.
A plurality of spring mounting seat holes 83 are uniformly distributed on the circumference of the gland 8 corresponding to the right side end face of the excircle boss retaining ring 31 of the static ring seat, the compensating springs 7 are mounted in the spring mounting seat holes 83 distributed on the circumference of the gland, and the compensating springs 7 and the right side end face of the excircle boss retaining ring 31 of the static ring seat are matched to push the static ring seat 3 and the static ring 1 to perform axial elastic compensation; so that the static ring and the dynamic ring keep a joint state.
The excircle face that corresponds excircle boss fender ring 31 of quiet ring seat on gland 8 has seted up spacing slotted hole 85, keep off ring 31 screw-thread fit fixed connection with the excircle boss of quiet ring seat in this spacing slotted hole 85 and be equipped with quiet ring seat axial displacement spacer pin 9, but through the spacing slotted hole 85 of quiet ring seat axial displacement spacer pin 9 on 8 at the ascending sliding fit of axial, guarantee promptly that quiet ring seat 3 is at axial compensation drunkenness to make quiet ring subassembly and gland 8 collection dress together.
The matching structure of the static ring 1, the static ring seat 3 and the gland 8 enables the inner cavity 80 between the static ring seat 3 and the gland 8 to be sealed, the compensation spring 7 and the spring mounting seat hole 83 are positioned in the sealing cavity, the compensation spring 7 and the spring mounting seat hole 83 are completely sealed and protected, the compensation spring 7 and the spring mounting seat hole 83 are completely isolated from a medium leaked from the friction sealing end surface of the static ring and the moving ring, and the medium leaked from the friction sealing end surface of the static ring and the moving ring cannot splash into the compensation spring 7 and the spring mounting seat hole 83 along with the rotation of a shaft, so that accumulation on the compensation spring 7 and the spring mounting seat hole 83 cannot occur, and the compensation spring cannot be blocked and mechanical sealing cannot be failed due to condensation or crystallization of the medium. The pump is particularly suitable for sealing the conveying medium under the harsh conditions of normal-temperature condensation, normal-temperature crystallization and the like, is particularly suitable for working conditions of pressure less than or equal to 4.2Mpa, temperature less than or equal to 176 ℃, and rotating speed less than or equal to 6000RPM, and effectively prolongs the service life of mechanical seal.
The mechanical sealing device can be applied in the forward and reverse directions, and because the compensating spring 7 and the spring mounting seat hole 83 are completely sealed and protected, a medium can not enter the compensating spring and the compensating spring seat hole in the reverse application, the medium is condensed or crystallized, and medium impurities can not block the compensating spring.
The invention enables the static ring component and the gland 8 to be assembled together through the static ring seat limiting screw 9, has simple structure and convenient processing, manufacture, transportation, installation and use, is only suitable for horizontal installation and use, and is also suitable for vertical installation and use.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
The invention discloses a mechanical sealing device for a closed integrated spring compensation static ring assembly, which comprises a dynamic ring assembly and a static ring assembly;
the movable ring component comprises a movable ring 01, a movable ring seat 02, a movable ring sealing ring 03, a movable ring transmission pin 04 and a movable ring seat sealing ring 05;
the static ring component comprises a static ring 1, a static ring sliding seal ring 2, a static ring seat 3, a static ring seat sliding seal ring 4, a static ring rotation-preventing pin 5, a static ring seat rotation-preventing pin 6, a compensating spring 7, a gland 8 and a static ring seat limiting screw 9.
The outer circle of the static ring 1 is in sliding fit with the gland 8, and a sealing groove and a static ring sliding sealing ring 2 are arranged on the sliding fit surface of the gland 8 and the outer circle of the static ring 1;
the stationary ring seat 3 is in a ring sleeve shape, and the inner circular surface of the rear end part of the stationary ring 1 is in interference fit and connection with the outer circular surface of the front end part of the stationary ring seat 3; the outer circle surface of the rear part of the static ring seat 3 is in sliding fit with the gland 8, and a sealing groove and a static ring sliding sealing ring 4 are arranged on the sliding fit surface of the gland 8 and the outer circle of the static ring seat 3;
an outer circle boss retaining ring 31 is arranged on the static ring seat 3, a cylindrical head screw static ring anti-rotation pin 5 is fixedly connected to the left side end face of the outer circle boss retaining ring 31 of the static ring seat, a static ring anti-rotation pin groove 32 is correspondingly arranged at the right end of the static ring 1, and the cylindrical head screw static ring anti-rotation pin 5 is matched with the static ring anti-rotation pin groove 32 on the static ring seat to prevent the static ring 1 from rotating;
a cylindrical head screw static ring seat anti-rotation pin 6 is fixedly connected to the right end face of the excircle boss retaining ring 31 of the static ring seat, a static ring seat anti-rotation pin groove 81 is correspondingly formed in the gland 8, and the cylindrical head screw static ring seat anti-rotation pin 6 is matched with the static ring seat anti-rotation pin groove 81 in the gland to prevent the static ring seat 3 from rotating;
a plurality of spring mounting seat holes 83 are uniformly distributed on the circumference of the gland 8 corresponding to the right side end face of the excircle boss retaining ring 31 of the static ring seat, the compensating springs 7 are mounted in the spring mounting seat holes 83 distributed on the circumference of the gland, and the compensating springs 7 and the right side end face of the excircle boss retaining ring 31 of the static ring seat are matched to push the static ring seat 3 and the static ring 1 to perform axial elastic compensation;
the excircle face that corresponds excircle boss fender ring 31 of quiet ring seat on gland 8 has seted up spacing slotted hole 85, keep off ring 31 screw-thread fit fixed connection with the excircle boss of quiet ring seat in this spacing slotted hole 85 and be equipped with cap screw quiet ring seat axial displacement spacer pin 9, but through cap screw quiet ring seat axial displacement spacer pin 9 and the spacing slotted hole 85 on gland 8 in the ascending sliding fit of axial, guarantee promptly that quiet ring seat 3 is in axial compensation drunkenness, and make quiet ring subassembly and gland 8 collection dress together.
The invention aims to achieve the best sealing effect:
B=(D2 2-Db 2)/(d2 2-D1 2)=0.70-0.75
b-balance coefficient
D2Outer diameter (mm) of the sealing end face
D1Inner diameter (mm) of the sealing end face
Db-slip diameter (mm).
Claims (2)
1. The mechanical sealing device for the closed integrated spring compensation static ring component comprises a dynamic ring component and a static ring component; the movable ring component comprises a movable ring, a movable ring seat, a movable ring sealing ring and a movable ring transmission pin; the method is characterized in that:
the static ring component consists of a static ring (1), a static ring sliding seal ring (2), a static ring seat (3), a static ring seat sliding seal ring (4), a static ring anti-rotation pin (5), a static ring seat anti-rotation pin (6), a compensation spring (7), a gland (8) and a static ring seat limiting screw (9);
the outer circle of the static ring (1) is in sliding fit with the gland (8), and a sealing groove and a static ring sliding sealing ring (2) are arranged on the sliding fit surface of the gland (8) and the outer circle of the static ring (1);
the stationary ring seat (3) is in a ring sleeve shape, and the inner circular surface of the rear end part of the stationary ring (1) is tightly and fixedly matched and connected with the outer circular surface of the front end part of the stationary ring seat (3); the outer circle surface of the rear part of the static ring seat (3) is in sliding fit with the gland (8), and a sealing groove and a static ring sliding sealing ring (4) are arranged on the sliding fit surface of the gland (8) and the outer circle of the static ring seat (3);
an excircle boss retaining ring (31) is arranged on the static ring seat (3), a static ring anti-rotation pin (5) is fixedly connected to the left end face of the excircle boss retaining ring (31) of the static ring seat, a static ring anti-rotation pin groove (32) is correspondingly arranged at the right end of the static ring (1), and the static ring anti-rotation pin (5) is matched with the static ring anti-rotation pin groove (32) on the static ring seat to prevent the static ring (1) from rotating;
a static ring seat anti-rotation pin (6) is fixedly connected to the right end face of an excircle boss retaining ring (31) of the static ring seat, a static ring seat anti-rotation pin groove (81) is correspondingly formed in the gland (8), and the static ring seat anti-rotation pin (6) is matched with the static ring seat anti-rotation pin groove (81) in the gland to prevent rotation of the static ring seat (3);
a plurality of spring mounting seat holes (83) are uniformly distributed on the circumference of the gland (8) corresponding to the right end face of the excircle boss retaining ring (31) of the static ring seat, compensation springs (7) are mounted in the spring mounting seat holes (83) distributed on the circumference of the gland, and the compensation springs (7) and the right end face of the excircle boss retaining ring (31) of the static ring seat are matched to push the static ring seat (3) and the static ring (1) to perform axial elastic compensation;
the outer circle face of the outer circle boss retaining ring (31) corresponding to the static ring seat on the gland (8) is provided with a limiting groove hole (85), the outer circle boss retaining ring (31) in the limiting groove hole (85) is fixedly connected with the outer circle boss retaining ring (31) of the static ring seat in a threaded fit mode and is provided with a static ring seat axial movement limiting pin (9), the static ring seat axial movement limiting pin (9) is in sliding fit with the limiting groove hole (85) in the gland (8) in the axial direction, the static ring seat (3) can move in the axial compensation mode, and the static ring component and the gland (8) are assembled together.
2. The mechanical seal of a closed integrated spring-compensated static ring assembly as set forth in claim 1 wherein:
B=(D2 2-Db 2)/(d2 2-D1 2)=0.70-0.75
b-balance coefficient
D2Outer diameter (mm) of the sealing end face
D1Inner diameter (mm) of the sealing end face
Db-slip diameter (mm).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010316861.6A CN111442092B (en) | 2020-04-21 | 2020-04-21 | Mechanical sealing device of closed integrated spring compensation static ring assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010316861.6A CN111442092B (en) | 2020-04-21 | 2020-04-21 | Mechanical sealing device of closed integrated spring compensation static ring assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111442092A true CN111442092A (en) | 2020-07-24 |
| CN111442092B CN111442092B (en) | 2024-06-18 |
Family
ID=71656057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010316861.6A Active CN111442092B (en) | 2020-04-21 | 2020-04-21 | Mechanical sealing device of closed integrated spring compensation static ring assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111442092B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113028065A (en) * | 2021-03-23 | 2021-06-25 | 浙大宁波理工学院 | Sealing device |
| CN114838133A (en) * | 2022-06-01 | 2022-08-02 | 宁波安睦密封科技有限公司 | Mechanical seal |
| CN115654143A (en) * | 2022-12-28 | 2023-01-31 | 东营海森密封技术有限责任公司 | Self-balancing micro-contact sealing structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206159490U (en) * | 2016-08-30 | 2017-05-10 | 丹东市东升石化设备有限公司 | Single -ended face spring mechanical seal device |
| CN107401616A (en) * | 2017-07-28 | 2017-11-28 | 丹东克隆集团有限责任公司 | Nuclear power low pressure safety injection pump mechanically-sealing apparatus |
| CN107435654A (en) * | 2017-07-28 | 2017-12-05 | 丹东克隆集团有限责任公司 | Nuclear power medium-voltage safety injection pump mechanically-sealing apparatus |
| CN109654229A (en) * | 2018-12-20 | 2019-04-19 | 丹东克隆集团有限责任公司 | The external protection integrated mechanical seal device of counterbalance spring |
| CN212377293U (en) * | 2020-04-21 | 2021-01-19 | 丹东克隆集团有限责任公司 | Mechanical sealing device for closed integrated spring compensation static ring assembly |
-
2020
- 2020-04-21 CN CN202010316861.6A patent/CN111442092B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206159490U (en) * | 2016-08-30 | 2017-05-10 | 丹东市东升石化设备有限公司 | Single -ended face spring mechanical seal device |
| CN107401616A (en) * | 2017-07-28 | 2017-11-28 | 丹东克隆集团有限责任公司 | Nuclear power low pressure safety injection pump mechanically-sealing apparatus |
| CN107435654A (en) * | 2017-07-28 | 2017-12-05 | 丹东克隆集团有限责任公司 | Nuclear power medium-voltage safety injection pump mechanically-sealing apparatus |
| CN109654229A (en) * | 2018-12-20 | 2019-04-19 | 丹东克隆集团有限责任公司 | The external protection integrated mechanical seal device of counterbalance spring |
| CN212377293U (en) * | 2020-04-21 | 2021-01-19 | 丹东克隆集团有限责任公司 | Mechanical sealing device for closed integrated spring compensation static ring assembly |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113028065A (en) * | 2021-03-23 | 2021-06-25 | 浙大宁波理工学院 | Sealing device |
| CN113028065B (en) * | 2021-03-23 | 2023-08-04 | 浙大宁波理工学院 | Sealing device |
| CN114838133A (en) * | 2022-06-01 | 2022-08-02 | 宁波安睦密封科技有限公司 | Mechanical seal |
| CN115654143A (en) * | 2022-12-28 | 2023-01-31 | 东营海森密封技术有限责任公司 | Self-balancing micro-contact sealing structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111442092B (en) | 2024-06-18 |
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