CN111306304A - Rotary-vane type high-temperature high-pressure gas (liquid) elastic contact dynamic sealing device and preparation method - Google Patents
Rotary-vane type high-temperature high-pressure gas (liquid) elastic contact dynamic sealing device and preparation method Download PDFInfo
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- CN111306304A CN111306304A CN202010221828.5A CN202010221828A CN111306304A CN 111306304 A CN111306304 A CN 111306304A CN 202010221828 A CN202010221828 A CN 202010221828A CN 111306304 A CN111306304 A CN 111306304A
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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
- F16J15/16—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
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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
- F16J15/16—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
- F16J15/3404—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal
- F16J15/3408—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal at least one ring having an uneven slipping surface
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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
- F16J15/16—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
- F16J15/3464—Mounting of the seal
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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
- F16J15/16—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
- F16J15/3496—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member use of special materials
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Devices (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The invention provides a rotary-vane high-temperature high-pressure gas (liquid) elastic contact type dynamic sealing device, which comprises a dynamic ring and a static ring, wherein the dynamic ring is provided with a plurality of grooves; the movable ring is fixed on the outer circular surface of the rotor in a sealing way, and the static ring is fixed on the inner molded surface of the shell corresponding to the rotor; the rotating ring comprises a low-pressure side base body, a high-pressure side base body and a plurality of sealing pieces distributed along the circumferential direction of the rotor in an inner cavity formed by the low-pressure side base body and the high-pressure side base body, and the sealing pieces and the rotor are axially and radially inclined.
Description
Technical Field
The invention relates to the technical field of mechanical sealing, in particular to a rotary-vane high-temperature high-pressure gas (liquid) elastic contact type dynamic sealing device and a preparation method thereof.
Background
The dynamic seal of high-temperature and high-pressure gas mainly comprises soft and hard packing seal, labyrinth seal, piston ring seal and brush seal at present. The core of the seal is that the leakage amount of the sealing medium in unit time is reduced as much as possible under the same condition.
The soft packing is sealed under proper packing and structure, the highest applicable pressure is 35MPa, the temperature is 600 ℃, the linear velocity is 20m/s, the sealing requirement under the general condition can be met, the packing is easy to be hardened under the open fire condition, and the abrasion compensation is insufficient; the hard-pack seal uses a pressure of 350MPa, line speed of 12m/s, which requires cooling or heating of the pack.
The labyrinth seal is formed by forming a small tortuous gap between the rotating part and the fixed part, and the fluid is throttled for many times to achieve the sealing purpose. It belongs to non-contact seal, and the sealed effect is far less than contact seal.
The piston ring seal is a high-temperature high-pressure gas seal structure of the most common engine and similar structures in the prior art, and the piston ring seal has the advantages of low working condition adaptability and easy abrasion because the piston ring seal needs to work under the conditions of continuous lubrication and cooling.
The brush seal is taken as the key technology of modern turbo machinery, and the contact surface of the brush seal is 120 pieces/mm2The metal wire group grows on the forming substrate to be manufactured, the production and manufacturing are difficult, the cost is high, and the lubricating and cooling conditions are high. In addition, the brush filaments are heavily brushing the shaft.
Disclosure of Invention
The invention provides a rotary-vane high-temperature high-pressure gas (liquid) elastic contact type dynamic sealing device which does not need lubrication and cooling under special working conditions, and has long service life and stable effect.
The technical scheme of the invention is as follows:
a rotary-vane high-temperature high-pressure gas (liquid) elastic contact type dynamic sealing device is used for realizing sealing between a high-pressure side and a low-pressure side of shafting equipment; comprises a dynamic ring and a static ring; the movable ring is fixed on the outer circular surface of the rotor in a sealing way, and the static ring is fixed on the inner molded surface of the shell corresponding to the rotor; the moving ring comprises a low-pressure side base body, a high-pressure side base body and a plurality of sealing pieces positioned in an inner cavity formed by the low-pressure side base body and the high-pressure side base body;
the sealing pieces are distributed along the circumferential direction of the rotor and have inclination angles with the axial direction and the radial direction of the rotor; one end of the sealing sheet close to the rotor is in concave-convex fit connection with the low-pressure side matrix 1 and the high-pressure side matrix 4 respectively; the sealing fin is close to quiet ring one end and has the broach structure, and the prong of this broach structure low pressure lateral part contacts with quiet ring just, and the prong of this broach structure high pressure lateral part and quiet ring interference fit for the high pressure lateral part not only takes place elastic deformation tangent in quiet ring internal diameter circular face under quiet ring frictional resistance effect when the rotor rotates.
Optionally, the plurality of sealing sheets are parallel to each other.
Optionally, the inclination angle between the sealing plate and the radial direction of the rotor is 30-70 degrees, and the inclination angle between the sealing plate and the axial direction of the rotor is 0-5 degrees.
Optionally, the comb tooth structure of the sealing plate has 5-20 teeth.
Optionally, the sealing sheets comprise 1000-30000 sheets in total.
Optionally, the rotary-vane high-temperature high-pressure gas (liquid) elastic contact dynamic sealing device further includes two free rings, and the two free rings are respectively arranged at the first and second gaps between the teeth at the low-pressure side portion of the comb tooth structure.
Optionally, a spigot matching positioning structure is arranged between the low-pressure side base body and the high-pressure side base body.
Optionally, the material of the sealing piece is cobalt-based alloy or iron-based alloy.
Optionally, the stationary ring is made of alloy or ceramic resistant to the high-temperature working environment of the shafting equipment.
The preparation method is used for the rotary-vane high-temperature high-pressure gas (liquid) elastic contact type dynamic sealing device, a static sealing ring is arranged on the inner molded surface of a shell, a gland with low-pressure sealing is fixedly connected with the shell, wherein a sealing sheet is of a palm-shaped structure, concave grooves with certain size are symmetrically arranged on two sides of the palm-shaped structure, and the sealing sheets are arranged on a second sealing base body and are uniformly distributed at the same inclination angle of 30-70 degrees along the circumferential direction; the sealing piece is fixed on the sealing base body II according to the installation angle, the sealing piece concave groove is matched with the convex structure of the sealing base body I, and meanwhile the sealing base body I and the spigot of the sealing base body II are matched, positioned and assembled to form the movable ring.
The invention has the following beneficial effects:
1. the invention is characterized in that the tooth tip part of the comb tooth structure on the low-pressure side of the sealing sheet is contacted with the static ring but not interfered, the tooth tip part of the comb tooth structure on the high-pressure side is in interference fit with the static ring and slides when working, the sealing sheet and the rotor rotate synchronously, the interference part not only generates elastic deformation under the action of the friction resistance of the static ring and is tangent to the inner diameter of the static ring but also lags behind the tooth structure on the low-pressure side which is not in interference contact, the sealing sheet is distributed along the circumferential direction of the rotor and has inclination angles with the axial direction and the radial direction of the rotor, the sealing sheet not only has a vertical cutting effect on airflow, but also changes the airflow direction and has a reverse pushing effect on the incoming flow, and plays a disturbing effect on the entering high-temperature high-pressure gas (liquid) body, so that the sealing effect on a medium.
2. The free rings are added, and even if a trace amount of gas enters between the sealing sheets, the two layers of free rings can also block the gas from passing through.
3. The invention does not need oil lubrication, can be more used for complex working conditions with difficult oil chamber arrangement when meeting the requirements of common working conditions of high-temperature and high-pressure gas dynamic sealing, reduces the consumption of lubricating oil and reduces the environmental pollution;
4. the sealing sheet is made of wear-resistant and high-temperature-resistant materials such as cobalt-based alloy or iron-based alloy, so that the device is small in wear in use, long in service life and stable in use effect.
5. The invention has wide application range, can be applied to the high-temperature high-pressure gas (liquid) dynamic sealing technology of equipment such as steam turbines, gas turbines, rotor engines, natural gas and deep sea petroleum, saves resources and can improve the conversion efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of a rotary-vane high-temperature high-pressure gas (liquid) elastic contact dynamic sealing device according to the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a schematic view of the application of the rotary vane type high-temperature high-pressure gas (liquid) elastic contact dynamic sealing device of the present invention;
wherein the reference numerals have the meaning:
1-low pressure side substrate; 2-a free ring; 3-sealing the sheet; 4-high pressure side matrix; 5-a stationary ring; 6-pressing the cover; 7-a housing; 8-concave-convex matching; 9-a movable ring; 10-a rotor; 11-low pressure seal side; 12-spigot.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. 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.
The invention is suitable for the technical problem of high-temperature and high-pressure gas (liquid) dynamic sealing of equipment such as steam turbines, gas turbines, rotor engines, natural gas deep sea petroleum and the like, and can be applied to the radial dynamic sealing technology without (with) lubrication in a gas high-temperature and high-pressure state. The invention provides a rotary-vane high-temperature high-pressure gas (liquid) elastic contact type dynamic sealing device which has the advantages of longer service life than a packing seal and a brush seal, can not be lubricated under special working conditions and has wide use environment.
Fig. 1 is a schematic structural view of a rotary-vane high-temperature high-pressure gas (liquid) elastic contact type dynamic sealing device of the present invention, and fig. 2 is a sectional view in a direction a-a in fig. 1, as shown in fig. 1 and fig. 2:
a rotary-vane high-temperature high-pressure gas (liquid) elastic contact type dynamic sealing device is used for realizing sealing between a high-pressure side and a low-pressure side of shafting equipment; comprises a dynamic ring and a static ring 5; the movable ring is fixed on the outer circular surface of the rotor in a sealing way, and the static ring is fixed on the inner molded surface of the shell corresponding to the rotor; the moving ring comprises a low-pressure side base body 1, a high-pressure side base body 4 and a plurality of sealing pieces 3 positioned in an inner cavity formed by the low-pressure side base body 1 and the high-pressure side base body 4; the sealing sheets 3 are distributed along the circumferential direction of the rotor and have inclination angles with the axial direction and the radial direction of the rotor; one end of the sealing sheet 3 close to the rotor is respectively connected with the low-pressure side matrix 1 and the high-pressure side matrix 4 in a concave-convex matching mode 8; the sealing plate 3 is provided with a comb tooth structure close to one end of the static ring 5, the tooth tips of the low-pressure side part of the comb tooth structure are just contacted with the static ring 5, and the tooth tips of the high-pressure side part of the comb tooth structure are in interference fit with the static ring, so that when the rotor rotates, the high-pressure side part not only generates elastic deformation under the action of the friction resistance of the static ring 5 and is tangent to the inner diameter of the static ring 5 but also lags behind the low-pressure side part. The rotary-vane high-temperature high-pressure gas (liquid) elastic contact type dynamic sealing device further comprises two free rings 2, wherein the two free rings 2 are respectively arranged at the first and second gaps between teeth at the low-pressure side part of the comb tooth structure. The plurality of sealing sheets 3 are parallel to each other. The inclination angle between the sealing sheet 3 and the radial direction of the rotor is 30-70 degrees, and the inclination angle between the sealing sheet 3 and the axial direction of the rotor is 0-5 degrees. The comb tooth structure of the sealing piece 3 is provided with 5-20 teeth. The number of the sealing pieces 3 is 1000 to 30000. The two free rings 2 are respectively arranged at the first and second gaps between teeth at the low-voltage side part of the comb tooth structure. And a spigot 12 matching and positioning structure is arranged between the low-pressure side substrate 1 and the high-pressure side substrate 4. The material of the sealing piece 3 is cobalt-based alloy or iron-based alloy. The static ring 5 is made of alloy or ceramic which can resist the high-temperature working environment of shafting equipment.
Fig. 3 is an application schematic diagram of the rotary-vane high-temperature high-pressure gas (liquid) elastic contact type dynamic sealing device of the present invention, as shown in fig. 3:
the sealing static ring 5 is arranged on the inner molded surface of the shell 7, and the gland 6 provided with the low-pressure sealing side 11 is fixedly connected with the shell 7. In operation, the seal rotating ring 9 rotates with the rotor 10.
This device is by low pressure side base member 1, gasket 3, and wherein gasket 3 has about 10000 pieces, and high pressure side base member 4 and quiet ring 5 are constituteed.
Wherein: one side of the sealing sheet 3 close to the static ring 5 is of a comb-tooth-shaped structure, wherein 10 teeth are arranged, the tooth tips of the low-pressure side part of the comb-tooth structure are just contacted with the static ring 5, and the tooth tips of the high-pressure side part of the comb-tooth structure are in interference fit with the static ring, so that the high-pressure side part generates elastic deformation under the action of the friction resistance of the static ring 5 when the rotor rotates and is tangent to the inner diameter of the static ring 5 and lags behind the low-pressure side part, and the sealing sheet 3 is arranged on a base body and is uniformly distributed at the same inclination angle; the sealing piece 3 is close to rotor 10 one end and is connected with low pressure side base member 1, the unsmooth cooperation 8 of high pressure side base member 4 respectively for the installation angle of installation sealing piece 3 and control sealing piece 3, after being fixed in the base member with sealing piece 3 according to the installation angle, the protruding type structure of sealing piece 3 concave groove and base member is mutually supported, and the tang 12 cooperation location equipment of low pressure side base member 1 and high pressure side base member 4 is accomplished simultaneously.
The device is applied to high-temperature and high-pressure dynamic sealing equipment required by a steam turbine, a gas turbine or a rotor engine and the like. The rotor sealing rotating ring is installed on the rotor, the static ring is installed on the inner molded surface of the shell corresponding to the rotor to be sealed, and the clearance of 0.25 mm-0.5 mm is kept between the outer molded surface of the rotating ring matrix and the inner molded surface of the static ring. The sealing static ring is arranged in the inner profile of the equipment shell, and the high-pressure side of the sealing sheet can be in contact with the static ring and in interference fit with the static ring.
When the sealing device works, a closed cavity is formed by the shell and the rotor, the rotor does high-speed circular motion (the linear velocity is more than or equal to 20m/s) relative to the shell, the sealing sheet contacted with the static ring on the shell is extruded, the side pressure enables the sealing sheet to generate elastic deformation, and the sealing sheet is tightly attached to a contact surface, so that the sealing effect is achieved.
When the work stops, the sealing sheet is checked, and the static ring is not obviously abraded.
Fig. 2 is a cross-sectional view taken along a-a in fig. 1, as shown in fig. 2:
the sealing principle is as follows: when the device is installed on equipment needing sealing, the static ring on the low-pressure side of the sealing sheet is contacted but not excessive, and the high-pressure side of the sealing sheet is in interference fit with the static ring and also performs sliding motion during working. When the rotor rotates in the direction A-A, the sealing plate and the rotor rotate synchronously, and the interference part is elastically deformed to be tangent to the inner diameter of the static ring and lags behind the low-pressure side without excessive contact under the action of the friction resistance of the static ring.
At this time, the sealing plate has 30-70 deg. same inclination angle with radial direction of shaft and 0-5 deg. inclination angle with axial axis, so that it not only has vertical cutting action for air flow, but also can change air flow direction and has counter-propulsion action for incoming flow.
The invention also provides a preparation method, which is used for the rotary-vane high-temperature high-pressure gas (liquid) elastic contact type dynamic sealing device, wherein a sealing static ring 7 is arranged on the inner molded surface of a shell 6, and a gland 5 provided with a low-pressure seal 10 is fixedly connected with the shell 6, wherein a sealing sheet 2 is of a palm-shaped structure, concave grooves with certain size are symmetrically arranged on two sides of the palm-shaped structure, and the sealing sheets 2 are arranged on a sealing base body II 3 and are uniformly distributed along the circumferential direction at the same inclination angle of 30-70 degrees; wherein the convex type structure on concave groove and the second sealing substrate 3 mutually supports for the installation angle of installation gasket and control gasket is fixed in second sealing substrate 3 with gasket 2 according to installation angle on, later mutually supports the convex type structure of 2 concave grooves of gasket and first sealing substrate 1, and the tang cooperation location equipment of the first sealing substrate 1 and second sealing substrate 3 constitutes the rotating ring simultaneously.
In summary, when the rotating ring of the seal assembly rotates along with the shaft (rigid connection), the sealing sheet disturbs the entering high-temperature and high-pressure gas (liquid), so that the gas cannot pass through the gap between the rotating ring and the stationary ring of the seal assembly, and the sealing effect on the medium is achieved.
The invention is characterized in that the tooth point part of the comb tooth structure at the low pressure side of the sealing sheet is contacted with the static ring but not interfered, the tooth point part of the comb tooth structure at the high pressure side is in interference fit with the static ring and slides when working, the sealing sheet and the rotor rotate synchronously, the interference part not only generates elastic deformation under the action of the friction resistance of the static ring and is tangent to the inner diameter of the static ring but also lags behind the tooth structure at the low pressure side which is not in interference contact, the sealing sheet is distributed along the circumferential direction of the rotor and has inclination angles with the axial direction and the radial direction of the rotor, the sealing sheet not only has vertical cutting function to the air flow, but also changes the air flow direction and has reverse pushing function to the incoming flow, and plays a disturbing function to the high-temperature high-pressure air (liquid) body which enters, so that the sealing function to the medium can not pass through the gap between the static ring and the free ring is, the two layers of free rings can also block the oil from passing through the oil-free sealing ring, and the oil-free sealing ring is free from oil lubrication, can be more applicable to complex working conditions with difficult oil chamber arrangement when meeting the requirements of common working conditions of high-temperature and high-pressure gas dynamic sealing, reduces the consumption of lubricating oil and reduces the environmental pollution;
the sealing sheet is made of wear-resistant and high-temperature-resistant materials such as cobalt-based alloy or iron-based alloy, so that the device is small in wear in use, long in service life, stable in use effect and wide in application range.
Therefore, the rotary-vane sealing effect of the device is superior to that of labyrinth sealing and brush sealing, the rotary-vane sealing device is in elastic contact with the labyrinth sealing and brush sealing, has small abrasion, long service life and stable use effect, does not have the shedding phenomenon, and does not need lubrication and cooling under special working conditions.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A rotary-vane high-temperature high-pressure gas (liquid) elastic contact type dynamic sealing device is used for realizing sealing between a high-pressure side and a low-pressure side of shafting equipment; the method is characterized in that: comprises a dynamic ring and a static ring (5); the movable ring is fixed on the outer circular surface of the rotor in a sealing way, and the static ring is fixed on the inner molded surface of the shell corresponding to the rotor; the moving ring comprises a low-pressure side base body (1), a high-pressure side base body (4) and a plurality of sealing pieces (3) which are positioned in an inner cavity formed by the low-pressure side base body (1) and the high-pressure side base body (4);
the sealing pieces (3) are distributed along the circumferential direction of the rotor and have inclination angles with the axial direction and the radial direction of the rotor; one end of the sealing sheet (3) close to the rotor is respectively connected with the low-pressure side matrix (1) and the high-pressure side matrix (4) in a concave-convex matching way (8); the sealing fin (3) is close to one end of the static ring (5) and is provided with a comb tooth structure, the tooth tips of the low-pressure side part of the comb tooth structure are in contact with the static ring (5), and the tooth tips of the high-pressure side part of the comb tooth structure are in interference fit with the static ring, so that the high-pressure side part generates elastic deformation under the action of the friction resistance of the static ring (5) and is tangent to the inner circular surface of the static ring (5) when the rotor rotates.
2. The rotary vane high-temperature high-pressure gas (liquid) elastic contact type dynamic sealing device according to claim 1, characterized in that: the plurality of sealing sheets (3) are parallel to each other.
3. The rotary vane type high-temperature high-pressure gas (liquid) elastic contact type dynamic sealing device according to any one of claims 1 to 3, characterized in that: the inclination angle between the sealing sheet (3) and the radial direction of the rotor is 30-70 degrees, and the inclination angle between the sealing sheet and the axial direction of the rotor is 0-5 degrees.
4. The rotary vane high-temperature high-pressure gas (liquid) elastic contact type dynamic sealing device according to claim 1, characterized in that: the comb tooth structure of the sealing piece (3) is provided with 5-20 teeth.
5. The rotary vane high-temperature high-pressure gas (liquid) elastic contact type dynamic sealing device according to claim 1, characterized in that: the sealing pieces (3) are 1000-30000 pieces in total.
6. The rotary vane high-temperature high-pressure gas (liquid) elastic contact type dynamic sealing device according to claim 1, characterized in that: the rotary-vane high-temperature high-pressure gas (liquid) elastic contact type dynamic sealing device further comprises two free rings (2), and the two free rings (2) are respectively arranged at the gaps between the first teeth and the second teeth of the low-pressure side part of the comb tooth structure.
7. The rotary vane high-temperature high-pressure gas (liquid) elastic contact type dynamic sealing device according to claim 1, characterized in that: and a spigot (12) matched positioning structure is arranged between the low-pressure side base body (1) and the high-pressure side base body (4).
8. The rotary vane high-temperature high-pressure gas (liquid) elastic contact type dynamic sealing device according to claim 1, characterized in that: the sealing piece (3) is made of cobalt-based alloy or iron-based alloy.
9. The rotary vane high-temperature high-pressure gas (liquid) elastic contact type dynamic sealing device according to claim 1, characterized in that: the static ring (5) is made of alloy or ceramic.
10. A preparation method for the rotary-vane high-temperature high-pressure gas (liquid) elastic contact type dynamic sealing device according to claims 1-9, which is characterized in that: the sealing static ring (7) is arranged on the inner molded surface of the shell (6), the gland (5) provided with the low-pressure seal (10) is fixedly connected with the shell (6), the sealing sheet (2) is of a palm-shaped structure, concave grooves with certain size are symmetrically arranged on two sides of the palm-shaped structure, and the sealing sheet (2) is arranged on the sealing base body II (3) and uniformly distributed along the circumferential direction at the same inclination angle of 30-70 degrees; the sealing piece (2) is fixed on the sealing base body (3) according to the installation angle, then the sealing piece (2) concave groove is matched with the convex structure of the sealing base body (1), and the sealing base body (1) and the spigot of the sealing base body (3) are matched in a positioning mode to form a moving ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010221828.5A CN111306304A (en) | 2020-03-25 | 2020-03-25 | Rotary-vane type high-temperature high-pressure gas (liquid) elastic contact dynamic sealing device and preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010221828.5A CN111306304A (en) | 2020-03-25 | 2020-03-25 | Rotary-vane type high-temperature high-pressure gas (liquid) elastic contact dynamic sealing device and preparation method |
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| Publication Number | Publication Date |
|---|---|
| CN111306304A true CN111306304A (en) | 2020-06-19 |
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|---|---|---|---|
| CN202010221828.5A Pending CN111306304A (en) | 2020-03-25 | 2020-03-25 | Rotary-vane type high-temperature high-pressure gas (liquid) elastic contact dynamic sealing device and preparation method |
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| CN (1) | CN111306304A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114877071A (en) * | 2022-05-12 | 2022-08-09 | 中国航发四川燃气涡轮研究院 | Fingertip sealing structure with finger touching piece and processing method thereof |
-
2020
- 2020-03-25 CN CN202010221828.5A patent/CN111306304A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114877071A (en) * | 2022-05-12 | 2022-08-09 | 中国航发四川燃气涡轮研究院 | Fingertip sealing structure with finger touching piece and processing method thereof |
| CN114877071B (en) * | 2022-05-12 | 2023-09-05 | 中国航发四川燃气涡轮研究院 | Fingertip sealing structure with contact finger and processing method thereof |
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