CN115217975B - Sealing device for converting axial force into radial extrusion bonding force - Google Patents
Sealing device for converting axial force into radial extrusion bonding force Download PDFInfo
- Publication number
- CN115217975B CN115217975B CN202210867678.4A CN202210867678A CN115217975B CN 115217975 B CN115217975 B CN 115217975B CN 202210867678 A CN202210867678 A CN 202210867678A CN 115217975 B CN115217975 B CN 115217975B
- Authority
- CN
- China
- Prior art keywords
- sealing ring
- corrosion
- cylindrical surface
- sealed
- pressure output
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
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
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3268—Mounting of sealing rings
-
- 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
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3284—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structure; Selection of materials
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gasket Seals (AREA)
Abstract
The invention discloses a sealing device for converting axial force into radial extrusion bonding force, wherein a continuous pressure output part is positioned at the upper end of a corrosion-resistant sealing ring, a fourth round table surface of the continuous pressure output part is contacted with the inner side of the upper end of a third round ring body of the corrosion-resistant sealing ring, the lower end surface of a fourth concentric circular plate of the continuous pressure output part is contacted with a first upper concentric circular plate of a sealed part with an inner cylindrical surface, and the fourth concentric circular plate of the continuous pressure output part is connected with a first circular plate of the sealed part with the inner cylindrical surface through a fourth screw; the end part of the cable penetrating pipe adopted by the invention is a conical surface and has a reduced diameter, when the polytetrafluoroethylene sealing ring with the circular section is installed, the diameter of the polytetrafluoroethylene sealing ring with the circular section is not required to be enlarged, the polytetrafluoroethylene sealing ring with the circular section generates radial expansion under the axial extrusion action of the upper conical surface and the lower conical surface, and simultaneously the polytetrafluoroethylene sealing ring is extruded and attached with the end cover of the warhead and the cable penetrating pipe, so that the sealing is realized, and the power of the detonation warhead is ensured to be reliably exerted.
Description
Technical Field
The invention belongs to the technical field of sealing devices, relates to a radial extrusion sealing device, and particularly relates to a sealing device for converting axial force into radial extrusion bonding force.
Background
The detonation warhead is internally filled with high-energy fuel, the high-energy fuel is thrown into the air through the explosion throwing driving action of the explosive, the high-energy fuel is mixed with the air to form a large-range active cloud cluster, and the active cloud cluster is subjected to secondary detonation of the explosive to generate detonation of the body so as to release strong shock waves, so that the detonation warhead is one of weapons with maximum power.
The high-energy fuel filled in the detonation warhead contains liquid phase materials, so that all parts, which are in contact with the high-energy fuel, in the detonation warhead need to be provided with tightness, and mechanical interfaces such as a shell, front and rear end covers, a charging port, a cable penetrating pipe, a chemical throwing pipe and the like of the detonation warhead need to meet the sealing requirement.
The high-energy liquid phase fuel filled in the detonation warhead has strong corrosiveness, and various rubber materials react with the high-energy liquid phase fuel to fail. When the body detonation warhead is applied to a weapon platform, storage conditions of at least ten years are required to be met. In the long-term storage process, the rubber sealing element is subjected to chemical reaction with the high-energy liquid-phase fuel, so that the reacted rubber is aged, loses rebound resilience and does not play a sealing role, and once the detonation warhead leaks, the warhead fails and a major accident is caused.
Zhang Dongna et al report on the effect of the stretching treatment on polytetrafluoroethylene properties (journal of aeronautical materials, 12 months, 33, 6 th, 57 pages): polytetrafluoroethylene is a polymer material with excellent comprehensive performance, and has excellent high and low temperature resistance and chemical corrosion resistance. The project team carries out compatibility experiments on polytetrafluoroethylene and high-energy liquid phase fuel, and discovers that the polytetrafluoroethylene material and the high-energy liquid phase fuel do not react chemically, the polytetrafluoroethylene material meets the compatibility with the high-energy liquid phase fuel, and the sealing ring made of the polytetrafluoroethylene material can be used on a body detonation warhead for a long time and has long-term storage conditions.
As a sealing ring material, the compressibility is extremely important, but the compressibility of polytetrafluoroethylene is very poor, the elastic modulus of polytetrafluoroethylene is 280MPa, the tensile strength of polytetrafluoroethylene is 15MPa, and the tensile strength is only 5.3% of the elastic modulus, namely, when the deformation amount of the polytetrafluoroethylene material exceeds 5.3%, deformation damage occurs.
The cable penetrating pipe of the detonation warhead is contacted with the warhead end cover through the radial cylindrical surface in a matching way, and the cylindrical surface contact part of the two parts needs to be sealed. Xu Jinpeng et al report a radial sealing structure in the analysis and prevention measures of the cause of leakage problem of an O-shaped rubber sealing ring (rubber industry, 2013, 11 th 677) in the literature, and the radial sealing structure is suitable for sealing shaft hole parts with cylindrical contact surfaces, an annular groove is processed on the shaft part or the hole part, the sealing ring is arranged in the annular groove, and after the sealing ring is radially extruded, the sealing ring is simultaneously in extrusion contact with the shaft part and the hole part to realize sealing.
However, the radial sealing structure is provided with a polytetrafluoroethylene sealing ring, which has the following problems: the sealing ring is arranged in the annular groove of the radial sealing structure, the diameter of the sealing ring needs to be enlarged, and the sealing ring is naturally restored to the original size by the elasticity of the sealing ring after being arranged in the annular groove. However, polytetrafluoroethylene has poor compressibility, and it is very difficult to enlarge the diameter of the polytetrafluoroethylene sealing ring, if the polytetrafluoroethylene sealing ring is forcibly enlarged in diameter, the polytetrafluoroethylene sealing ring is permanently deformed and destroyed, and the diameter cannot be restored to the original size, so that the polytetrafluoroethylene sealing ring in the radial sealing structure cannot be installed.
Disclosure of Invention
In order to overcome the defects or shortcomings in the prior art, the invention aims to provide a sealing device which converts axial force into radial extrusion bonding force.
In order to achieve the above task, the present invention adopts the following technical solutions:
the sealing device for converting axial force into radial extrusion bonding force comprises a sealed part with an inner cylindrical surface and a sealed part with an outer conical surface, wherein the sealed part with the inner cylindrical surface is an end cover of a body detonation warhead, and the sealed part with the outer conical surface is a cable penetrating pipe of the body detonation warhead; the device also comprises a corrosion-resistant sealing ring 3 and a continuous pressure output part;
The sealed part with the inner cylindrical surface is in a first circular plate shape, the first circular plate is provided with a first circular hole, and the central axis of the first circular hole is perpendicular to the ground; the inner side surface of the first round hole is a first inner cylindrical surface, and the upper end surface of the first round plate is a first upper end concentric circle plane;
The shape of the sealed part with the outer conical surface is a second circular tube, the second circular tube is a revolution body, the upper end of the outer side surface of the second circular tube is a second upper end cylindrical surface, the middle part of the outer side surface of the second circular tube is a second circular table surface, the lower end of the outer side surface of the second circular tube is a second lower end cylindrical surface, the diameter of the second lower end cylindrical surface is larger than that of the second upper end cylindrical surface, the upper end of the second lower end cylindrical surface is provided with a second annular groove, and the shaft section of the second annular groove of the sealed part with the outer conical surface is V-shaped;
The axis of the revolving body of the sealed part 2 with the outer conical surface is coincident with the central axis of the first round hole of the sealed part 1 with the inner conical surface, the second round table surface and the second upper end cylindrical surface of the sealed part with the outer conical surface are positioned on the inner side of the first round hole of the sealed part with the inner cylindrical surface and are used for sealing an annular gap between the first inner cylindrical surface of the sealed part with the inner cylindrical surface and the second round table surface of the sealed part with the outer conical surface;
The corrosion-resistant sealing ring is in a third annular body, the third annular body is a revolving body, the shaft section of the third annular body is circular, and the material of the third annular body is polytetrafluoroethylene;
the axis of the revolving body of the corrosion-resistant sealing ring coincides with the axis of the revolving body of the sealed part with the outer conical surface, the corrosion-resistant sealing ring is positioned on the inner side of the first inner cylindrical surface of the sealed part with the inner cylindrical surface, and the corrosion-resistant sealing ring is positioned on the outer side of the second round table surface of the sealed part 2 with the outer conical surface;
The continuous pressure output part is a revolving body, the revolving body consists of an upper part, a middle part and a lower part, wherein the upper part is a fourth concentric circular plate, the shaft section of the middle part is V-shaped, the wall thickness of the V-shape is 6mm, the included angle between two sides of the V-shape is 15-21 DEG, the V-shaped opening of the shaft section of the middle part faces away from the axis of the revolving body of the continuous pressure output part, the shaft section of the lower part is a right trapezoid, the bevel edge of the right trapezoid is positioned at the lowest end, and the lower end face of the lower part is a fourth round table surface;
The axis of revolution of the continuous pressure output part coincides with the axis of revolution of the corrosion-resistant sealing ring, the continuous pressure output part is positioned at the upper end of the corrosion-resistant sealing ring, a fourth round table surface of the continuous pressure output part is contacted with the inner side of the upper end of a third round ring body of the corrosion-resistant sealing ring, the lower end surface of a fourth concentric circular plate of the continuous pressure output part is contacted with the plane of a first upper concentric circle of the sealed part with an inner cylindrical surface, and a fourth concentric circular plate of the continuous pressure output part 4 is connected with the first circular plate of the sealed part with the inner cylindrical surface through a fourth screw.
Regarding the second annular groove shaft section of the sealed part 2 with the outer conical surface is a V-shaped included angle between two sides, any one of the following 2 modes can be adopted:
Implementation 1: the second annular groove of the sealed part 2 with the outer conical surface has a V-shaped shaft section with an included angle of 15 degrees at two sides.
Implementation 2: the second annular groove of the sealed part 2 with the outer conical surface has a V-shaped shaft section and an included angle of 21 degrees at two sides.
The application method of the sealing device for converting axial force into radial extrusion bonding force is characterized by comprising the following steps of:
step 1: assembling a sealed part with an inner cylindrical surface and a sealed part with an outer conical surface;
step 2: assembling the corrosion-resistant sealing ring and the sealed part with the outer conical surface;
step 3: assembling the continuous pressure output part with the sealed part with the inner cylindrical surface;
Step 4: the fourth screw is screwed down, the continuous pressure output part moves downwards, the fourth round table surface of the continuous pressure output part extrudes the corrosion-resistant sealing ring, the continuous pressure output part gives downward axial force to the corrosion-resistant sealing ring, the V-shaped wall thickness of the middle part of the continuous pressure output part is 6mm, the lower end of the corrosion-resistant sealing ring is supported by the second round table surface of the sealed part with the outer conical surface, the sealed part gives upward axial force to the corrosion-resistant sealing ring, the continuous pressure output part extrudes the inner side of the upper end of the corrosion-resistant sealing ring, the outer conical surface is pressurized by the sealed part and the inner side of the lower end of the corrosion-resistant sealing ring, the vertical component force of the upper and lower axial forces applied to the corrosion-resistant sealing ring is opposite in the vertical direction, the horizontal component force of the upper and lower axial forces applied to the corrosion-resistant sealing ring enables the corrosion-resistant sealing ring to move towards the direction with the increased diameter, the outer side of the corrosion-resistant sealing ring is in extrusion contact with the first inner cylindrical surface with the sealed part, the sealing ring is mutually attached, and sealing is achieved.
The sealing device for converting axial force into radial extrusion bonding force has the following technical effects:
The end part of the adopted cable penetrating pipe is a conical surface and the diameter is reduced, when the polytetrafluoroethylene sealing ring with the circular section is installed, the diameter of the polytetrafluoroethylene sealing ring with the circular section is not required to be enlarged, radial expansion is generated under the axial extrusion action of the upper conical surface and the lower conical surface, and meanwhile, the polytetrafluoroethylene sealing ring with the circular section is extruded and attached with the end cover of the warhead and the cable penetrating pipe, so that sealing is realized, and the power of the detonation warhead is ensured to be reliably exerted.
Drawings
Fig. 1 is a schematic structural view of a sealing device of the present invention that converts axial force into radial compressive mating force. The marks in the figures represent: 1. the device comprises a sealed part with an inner cylindrical surface, a sealed part with an outer conical surface, a corrosion-resistant sealing ring and a continuous pressure output part.
The invention is described in further detail below with reference to the drawings and examples.
Detailed Description
The following embodiments are preferred examples. The invention is not limited to the following specific embodiments, and all additions and equivalent changes based on the technical scheme of the invention are included in the protection scope of the invention.
Example 1:
As shown in fig. 1, the present embodiment provides a sealing device for converting axial force into radial extrusion bonding force, which comprises a sealed part 1 with an inner cylindrical surface, a sealed part 2 with an outer conical surface, a corrosion-resistant sealing ring 3 and a continuous pressure output part 4;
the cable threading pipe with the inner cylindrical surface sealed part 1 as an end cover of the body detonation warhead and the outer conical surface sealed part 2 as the body detonation warhead;
The sealed part 1 with the inner cylindrical surface is in a first circular plate shape, the first circular plate is provided with a first circular hole, and the central axis of the first circular hole is perpendicular to the ground; the inner side surface of the first round hole is a first inner cylindrical surface; the upper end face of the first circular plate is a first upper end concentric circle plane;
The sealed part 2 with the outer conical surface is in a second circular tube shape, the second circular tube is a revolution body, the upper end of the outer side surface of the second circular tube is a second upper end cylindrical surface, the middle part of the outer side surface of the second circular tube is a second circular table top, the lower end of the outer side surface of the second circular tube is a second lower end cylindrical surface, and the diameter of the second lower end cylindrical surface is larger than that of the second upper end cylindrical surface; the upper end of the cylindrical surface of the second lower end is provided with a second annular groove, and the shaft section of the second annular groove is V-shaped;
The axis of the revolving body of the sealed part 2 with the outer conical surface is coincident with the central axis of the first round hole of the sealed part 1 with the inner cylindrical surface, and the second round table surface and the second upper end cylindrical surface of the sealed part 2 with the outer conical surface are positioned at the inner side of the first round hole of the sealed part 1 with the inner cylindrical surface and are used for sealing an annular gap between the first inner cylindrical surface of the sealed part 1 with the inner cylindrical surface and the second round table surface of the sealed part 2 with the outer conical surface;
The corrosion-resistant sealing ring 3 is in the shape of a third torus and is a revolving body, the shaft section of the corrosion-resistant sealing ring is circular, and the material of the corrosion-resistant sealing ring is polytetrafluoroethylene;
the axis of the revolution body of the corrosion-resistant sealing ring 3 is coincident with the axis of the revolution body of the sealed part 2 with the outer conical surface, the corrosion-resistant sealing ring 3 is positioned on the inner side of the first inner cylindrical surface of the sealed part 1 with the inner cylindrical surface, and the corrosion-resistant sealing ring 3 is positioned on the outer side of the second round platform surface of the sealed part 2 with the outer conical surface;
the continuous pressure output part 4 is a revolving body, and the revolving body consists of an upper part, a middle part and a lower part, wherein: the upper part is a fourth concentric circular plate, the shaft section of the middle part is V-shaped, and the V-shaped opening of the shaft section of the middle part faces away from the axis of the revolving body of the continuous pressure output part 4; the lower part has a right trapezoid axial section, the right trapezoid bevel edge is positioned at the lowest end, and the lower end surface of the lower part is a fourth round table top;
The axis of revolution of the continuous pressure output part 4 coincides with the axis of revolution of the corrosion-resistant sealing ring 3, the continuous pressure output part 4 is positioned at the upper end of the corrosion-resistant sealing ring 3, the fourth round table surface of the continuous pressure output part 4 is contacted with the inner side of the upper end of the third round ring body of the corrosion-resistant sealing ring 3, the lower end surface of the fourth concentric circular plate of the continuous pressure output part 4 is contacted with the first upper end concentric circular plate of the sealed part 1 with the inner cylindrical surface, and the fourth concentric circular plate of the continuous pressure output part 4 is connected with the first circular plate of the sealed part 1 with the inner cylindrical surface through a fourth screw.
The application method of the sealing device for converting axial force into radial extrusion bonding force comprises the following steps:
Step1: assembling a sealed part 1 with an inner cylindrical surface and a sealed part 2 with an outer conical surface;
step 2: assembling the corrosion-resistant sealing ring 3 and the sealed part 2 with the outer conical surface;
Step 3: assembling the continuous pressure output part 4 with the sealed part 1 with the inner cylindrical surface;
Step 4: the fourth screw is screwed down, the continuous pressure output part 4 moves downwards, the fourth round platform surface of the continuous pressure output part 4 extrudes the corrosion-resistant sealing ring 3, the continuous pressure output part 4 gives downward axial force to the corrosion-resistant sealing ring 3, the V-shaped wall thickness of the middle shaft section of the continuous pressure output part 4 is 6mm, the lower end of the corrosion-resistant sealing ring 3 is supported by the second round platform surface of the outer circular surface sealed part 2, the outer circular surface sealed part 2 gives upward axial force to the corrosion-resistant sealing ring 3, the continuous pressure output part 4 extrudes the inner side of the upper end of the corrosion-resistant sealing ring 3, the outer circular surface sealed by the sealing part 2 is pressurized by the inner side of the lower end of the corrosion-resistant sealing ring 3, the upper axial force and the lower axial force received by the corrosion-resistant sealing ring 3 are opposite in the direction, the component force received by the corrosion-resistant sealing ring 3 in the horizontal direction makes the corrosion-resistant sealing ring 3 move in the direction with the increased diameter, the outer side of the corrosion-resistant sealing ring 3 is in extrusion contact with the first round surface sealed by the outer circular surface sealed by the sealing part 1, and the second round platform surface sealed by the outer circular surface sealed by the sealing part 1 is bonded by the second round platform surface sealed by the outer circular surface sealed by the sealing part 1.
The working principle of the sealing device for converting axial force into radial extrusion bonding force in this embodiment is as follows:
The corrosion-resistant sealing ring 3 is made of polytetrafluoroethylene, can bear the corrosiveness of fuel in the detonation warhead, but has poor elasticity of the corrosion-resistant sealing ring 3, and in a conventional radial sealing structure, the corrosion-resistant sealing ring 3 needs to be stretched, put in and contracted back again, but has poor elasticity of the corrosion-resistant sealing ring 3, cannot rebound, and is permanently deformed and damaged in the stretching process. Not applicable to such a structure.
In this embodiment, the inventor reduces the diameter of the end of the shaft part, which is matched with the hole part, so that the corrosion-resistant sealing ring 3 can be naturally placed in the hole part without being elongated, and the damage caused by elongation is avoided. Then, the contact surface of the shaft part contacted with the corrosion-resistant sealing ring 3 is a round table surface, the upper end of the corrosion-resistant sealing ring 3 is also contacted with a round table surface, under the extrusion action of the two round table surfaces, the round table surface is in an included angle with the axis, the axial force is decomposed, the decomposed horizontal component force can enable the corrosion-resistant sealing ring 3 to expand outwards, the corrosion-resistant sealing ring 3 moves outwards, the outer side of the corrosion-resistant sealing ring 3 is contacted with the sealed part 1 with the inner cylindrical surface, after the corrosion-resistant sealing ring 3 expands outwards, the contact with the sealed part 1 with the inner cylindrical surface is tightly matched and extruded, the inner cylindrical surface with the sealed part 1 and the corrosion-resistant sealing ring 3 are mutually extruded under the action of the axial force, the corrosion-resistant sealing ring 3 is mutually extruded with the sealed part 2 with the outer conical surface, and the sealed part 2 with the outer conical surface is also sealed, and thus the corrosion-resistant sealing ring 3 seals the gap between the sealed part 1 with the sealed part 2 with the outer conical surface.
After the continuous pressure output part 4 receives axial force given by the fourth screw, the fourth screw extrudes the upper part of the continuous pressure output part 4, the upper part of the continuous pressure output part 4 transmits force downwards to the middle part of the continuous pressure output part 4, the V-shaped opening of the middle part of the continuous pressure output part 4 becomes smaller under the action of the axial force to generate elastic deformation, then the middle part of the continuous pressure output part 4 transmits the axial force to the lower part of the continuous pressure output part 4, the lower part of the continuous pressure output part 4 extrudes the corrosion-resistant sealing ring 3, and as the elastic deformation of the middle part of the continuous pressure output part 4 is permanently existing, the continuous pressure output part 4 gives the corrosion-resistant sealing ring 3 to be permanently existing, so that the corrosion-resistant sealing ring 3 and the sealed part 1 with the inner cylindrical surface are permanently attached to the sealed part 2 with the outer conical surface, and permanent sealing is ensured.
In this embodiment, the wall thickness of the V-shape of the shaft section of the intermediate portion of the continuous pressure output member 4 is designed to be 6mm because: the wall thickness is too thin, the rigidity is too poor, the force generated by large deformation is very small, permanent deformation and unloading are easy to occur, good extrusion effect cannot be generated on the corrosion-resistant sealing ring 3, and the sealing effect is reduced. The wall thickness is too thick, and deformability is too poor, and in the whole use, the deformation that takes place is trace, and once the part appears slightly to leap up, becomes can not make continuous pressure output part 4 effectual extrusion corrosion-resistant sealing washer 3, and then can not make corrosion-resistant sealing washer 3 realize sealed effect. Experiments show that the purpose of permanent sealing can be achieved by designing the wall thickness of the partial shaft section V-shape of the continuous pressure output part 4 to be 6 mm.
The detonation warhead is internally filled with high-energy fuel, and the high-energy fuel is thrown into the air through the explosive explosion throwing driving action and is mixed with the air to form a large-range active cloud cluster. And detonating the active cloud cluster to generate detonation by explosive secondary detonation. When the active cloud is regular in shape, the body detonation power is high, and when the active cloud is irregular in shape, the body detonation power is low.
And, due to the existence of the sealed part 2, the body detonation warhead is circularly asymmetric, which affects the shape of the formed active cloud to make the active cloud irregular.
The inventor adopts a solution method to avoid the influence of the sealing part 2 with the outer conical surface on the detonation warhead as much as possible.
In this embodiment, a second annular groove is machined at the upper end of the cylindrical surface of the second lower end of the sealed part 2 with the outer conical surface, the second annular groove of the sealed part 2 with the outer conical surface has a V-shaped axial cross section, when the detonation fighter part of the body is thrown by the detonation of the explosive, the shock waves formed by the detonation of the explosive are converged and concentrated at the second annular groove of the V-shaped, and finally the sealed part 2 with the outer conical surface is broken instantly at the second annular groove, after the break, the sealed part 2 with the outer conical surface is separated from the sealed part 1 with the inner cylindrical surface, so that the detonation fighter part of the body is not influenced any more, and the cloud cluster shape is not influenced.
Experiments also find that when the included angle between the V-shaped two sides of the second annular groove shaft section of the outer conical surface sealed part 2 is too small, the opening area of the V-shaped groove is too small, the energy of explosive explosion shock waves at the V-shaped groove is too small, the outer conical surface can not be smoothly cut off by the sealed part 2, and when the included angle between the V-shaped two sides of the outer conical surface is too large, the included angle between the V-shaped groove side surface of the outer conical surface sealed part 2 and the shock wave speed direction is too large, so that the shock waves act on the V-shaped groove side surface and then are emitted, and can not be converged, and the outer conical surface can not be smoothly cut off by the sealed part 2.
The inventor carries out collective discussion by a part of theoretical calculation and sumps workers with relevant working experience, the problems are resolved, each module is independently subjected to experimental evaluation and is tested, and finally, when the included angle between the two sides of the V-shaped second annular groove shaft section of the sealed part 2 with the outer conical surface is 15-21 degrees, the problems can be avoided, the sealing device for converting axial force into radial extrusion bonding force can be embodied in design advantages, functions can be well exerted, and the sealing device for converting axial force into radial extrusion bonding force can be well solved.
In the embodiment, the second annular groove of the sealed part 2 with the outer conical surface has a V-shaped shaft section and an included angle of 15 degrees at two sides;
Ten sealing devices for converting axial force into radial extrusion bonding force in the embodiment are processed, corrosive fuel is filled according to the steps of the using method, and the sealing devices are preserved for three months and are sealed well. The sealing device of the present embodiment, which converts axial force into radial compression fit force, proves reliable and effective.
The sealing device for converting axial force into radial extrusion bonding force in the embodiment has the following technical effects:
The end part of the sealed part (the cable penetrating pipe) with the outer conical surface is a conical surface and the diameter is reduced, when the polytetrafluoroethylene sealing ring with the circular cross section is installed, the diameter of the polytetrafluoroethylene sealing ring with the circular cross section is not required to be enlarged, the polytetrafluoroethylene sealing ring with the circular cross section generates radial expansion under the axial extrusion action of the upper conical surface and the lower conical surface, and meanwhile the polytetrafluoroethylene sealing ring is extruded and attached with the end cover of the detonation warhead and the cable penetrating pipe, so that the sealing is realized, and the power of the detonation warhead is ensured to be reliably exerted.
Example 2:
Example 2 differs from example 1 only in that:
in this embodiment, the second annular groove of the sealed component 2 with the outer conical surface has a V-shaped axial cross section with an included angle of 21 °.
Ten sealing devices for converting axial force into radial extrusion bonding force, which are described in the embodiment, are processed, used according to the steps of the invention, filled with corrosive fuel, stored for three months, and sealed well. The sealing device of the present embodiment, which converts axial force into radial compression fit force, proves reliable and effective.
The sealing device for converting axial force into radial extrusion bonding force in the embodiment has the following technical effects:
The end part of the sealed part (the cable penetrating pipe) with the outer conical surface is a conical surface and the diameter is reduced, when the polytetrafluoroethylene sealing ring with the circular cross section is installed, the diameter of the polytetrafluoroethylene sealing ring with the circular cross section is not required to be enlarged, the polytetrafluoroethylene sealing ring with the circular cross section generates radial expansion under the axial extrusion action of the upper conical surface and the lower conical surface, and meanwhile the polytetrafluoroethylene sealing ring is extruded and attached with the end cover of the detonation warhead and the cable penetrating pipe, so that the sealing is realized, and the power of the detonation warhead is ensured to be reliably exerted.
Meanwhile, the inventor also performs corresponding experiments that the included angles of the two sides of the V-shaped cross section of the second annular groove are 16 degrees, 18 degrees and 20 degrees, and can meet the sealing requirement.
Claims (4)
1. The sealing device for converting axial force into radial extrusion bonding force comprises a sealed part (1) with an inner cylindrical surface and a sealed part (2) with an outer conical surface, wherein the sealed part (1) with the inner cylindrical surface is an end cover of a detonation fight part, and the sealed part (2) with the outer conical surface is a cable-through pipe of the detonation fight part; the device is characterized by further comprising a corrosion-resistant sealing ring (3) and a continuous pressure output part (4);
The sealed part (1) with the inner cylindrical surface is in a first circular plate shape, the first circular plate is provided with a first circular hole, and the central axis of the first circular hole is perpendicular to the ground; the inner side surface of the first round hole is a first inner cylindrical surface, and the upper end surface of the first round plate is a first upper end concentric circle plane;
The shape of the sealed part (2) with the outer conical surface is a second circular tube, the second circular tube is a revolution body, the upper end of the outer side surface of the second circular tube is a second upper end cylindrical surface, the middle part of the outer side surface of the second circular tube is a second circular table surface, the lower end of the outer side surface of the second circular tube is a second lower end cylindrical surface, the diameter of the second lower end cylindrical surface is larger than that of the second upper end cylindrical surface, the upper end of the second lower end cylindrical surface is provided with a second annular groove, and the axial section of the second annular groove is V-shaped;
The axis of a revolving body of the sealed part (2) with the outer conical surface is coincident with the central axis of a first round hole of the sealed part (1) with the inner cylindrical surface, and a second round table surface and a second upper end cylindrical surface of the sealed part (2) with the outer conical surface are positioned on the inner side of the first round hole of the sealed part (1) with the inner cylindrical surface and are used for sealing an annular gap between the first inner cylindrical surface of the sealed part (1) with the inner cylindrical surface and a second round table surface of the sealed part (2) with the outer conical surface;
the corrosion-resistant sealing ring (3) is in the shape of a third torus and is a revolving body, the shaft section of the corrosion-resistant sealing ring is circular, and the material of the corrosion-resistant sealing ring is polytetrafluoroethylene;
The axis of the revolving body of the corrosion-resistant sealing ring (3) is coincident with the axis of the revolving body of the sealed part (2) with the outer conical surface, the corrosion-resistant sealing ring (3) is positioned on the inner side of the first inner cylindrical surface of the sealed part (1) with the inner cylindrical surface, and the corrosion-resistant sealing ring (3) is positioned on the outer side of the second round table surface of the sealed part (2) with the outer conical surface;
The continuous pressure output part (4) is a revolving body, and consists of an upper part, a middle part and a lower part, wherein the upper part is a fourth concentric circular plate, the shaft section of the middle part is V-shaped, the wall thickness of the V-shape is 6mm, the included angle between two sides of the V-shape is 15-21 degrees, and the V-shaped opening of the shaft section of the middle part faces away from the revolving body axis of the continuous pressure output part (4); the lower part has a right trapezoid axial section, the right trapezoid bevel edge is positioned at the lowest end, and the lower end surface of the lower part is a fourth round table top;
the axis of revolution of the continuous pressure output part (4) coincides with the axis of revolution of the corrosion-resistant sealing ring (3), the continuous pressure output part (4) is positioned at the upper end of the corrosion-resistant sealing ring (3), a fourth round table surface of the continuous pressure output part (4) is in contact with the inner side of the upper end of a third round ring body of the corrosion-resistant sealing ring (3), the lower end surface of a fourth concentric circular plate of the continuous pressure output part (4) is in plane contact with a first upper end concentric circle of the sealed part (1) with an inner cylindrical surface, and the fourth concentric circular plate of the continuous pressure output part (4) is connected with the first circular plate of the sealed part (1) with the inner cylindrical surface through a fourth screw.
2. A sealing device for converting axial forces into radial compression fit forces according to claim 1, characterized in that the second annular groove of the external conical surface sealed part (2) has an axial cross section of V-shape with an included angle of 15 °.
3. A sealing device for converting axial forces into radial compression fit forces according to claim 1, characterized in that the second annular groove of the external conical surface sealed part (2) has an axial cross section of V-shape with an included angle of 21 °.
4. A method of using a sealing device for converting axial force into radial compressive mating force as claimed in any of claims 1 to 3, comprising the steps of:
step 1: assembling a sealed part (1) with an inner cylindrical surface and a sealed part (2) with an outer conical surface;
Step 2: assembling the corrosion-resistant sealing ring (3) with the sealed part (2) with the outer conical surface;
Step 3: assembling the continuous pressure output part (4) with the sealed part (1) with the inner cylindrical surface;
Step 4: tightening the fourth screw to enable the continuous pressure output part (4) to move downwards, enabling the fourth round table surface of the continuous pressure output part (4) to extrude the corrosion-resistant sealing ring (3), enabling the continuous pressure output part (4) to give downward axial force to the corrosion-resistant sealing ring (3), enabling the V-shaped wall thickness of the shaft section of the middle part of the continuous pressure output part (4) to be 6mm, enabling the lower end of the corrosion-resistant sealing ring (3) to be supported by the second round table surface of the sealing part (2) with the outer conical surface, enabling the outer conical surface to give upward axial force to the corrosion-resistant sealing ring (3) by the sealing part (2), enabling the continuous pressure output part (4) to extrude the inner side of the upper end of the corrosion-resistant sealing ring (3), the outer side of the corrosion-resistant sealing ring (3) is in extrusion contact with the first inner cylindrical surface of the sealed part (1) with the inner cylindrical surface, the sealing is realized, and up to this, the annular gap between the first inner cylindrical surface of the sealed part (1) with the inner cylindrical surface and the second round table surface of the sealed part (2) with the outer conical surface is sealed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210867678.4A CN115217975B (en) | 2022-07-22 | 2022-07-22 | Sealing device for converting axial force into radial extrusion bonding force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210867678.4A CN115217975B (en) | 2022-07-22 | 2022-07-22 | Sealing device for converting axial force into radial extrusion bonding force |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115217975A CN115217975A (en) | 2022-10-21 |
| CN115217975B true CN115217975B (en) | 2024-05-10 |
Family
ID=83613832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210867678.4A Active CN115217975B (en) | 2022-07-22 | 2022-07-22 | Sealing device for converting axial force into radial extrusion bonding force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115217975B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1323958A1 (en) * | 2001-12-19 | 2003-07-02 | Carl Freudenberg KG | Seal |
| CN1653285A (en) * | 2002-03-13 | 2005-08-10 | 托马斯·W·拉姆奇 | Installation and deployment sleeves for lip seals |
| CN101893093A (en) * | 2010-08-06 | 2010-11-24 | 浙江大学 | The dynamic sealing structure of the stern shaft of the underwater pressure-bearing shell |
| CN102410374A (en) * | 2011-11-22 | 2012-04-11 | 四川理工学院 | Tapered slip ring sealing structure with self-compensation performance |
| CN204253881U (en) * | 2014-12-03 | 2015-04-08 | 新昌县开源汽车轴承有限公司 | A kind of novel oil seal structure |
| CN104791494A (en) * | 2015-04-24 | 2015-07-22 | 马鞍山市格林矿冶环保设备有限公司 | Movable sealing device and use method thereof |
| CN106286840A (en) * | 2016-09-30 | 2017-01-04 | 桂林端面油封科技有限公司 | A kind of axial lip shape seal device of rotary shaft |
| CN106594009A (en) * | 2016-12-31 | 2017-04-26 | 杭州水处理技术研究开发中心有限公司 | External drive rotor type energy recycling device |
| CN107532729A (en) * | 2015-05-13 | 2018-01-02 | 株式会社开滋 | The seal construction and valve filler of fixed ball valve and valve |
| CN111828644A (en) * | 2020-08-11 | 2020-10-27 | 国电大渡河检修安装有限公司 | Combined sealing device |
| CN113236777A (en) * | 2021-03-25 | 2021-08-10 | 西安近代化学研究所 | Mechanical connecting device capable of filling gaps of different sizes, having no assembling extrusion force and having supporting function |
-
2022
- 2022-07-22 CN CN202210867678.4A patent/CN115217975B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1323958A1 (en) * | 2001-12-19 | 2003-07-02 | Carl Freudenberg KG | Seal |
| CN1653285A (en) * | 2002-03-13 | 2005-08-10 | 托马斯·W·拉姆奇 | Installation and deployment sleeves for lip seals |
| CN101893093A (en) * | 2010-08-06 | 2010-11-24 | 浙江大学 | The dynamic sealing structure of the stern shaft of the underwater pressure-bearing shell |
| CN102410374A (en) * | 2011-11-22 | 2012-04-11 | 四川理工学院 | Tapered slip ring sealing structure with self-compensation performance |
| CN204253881U (en) * | 2014-12-03 | 2015-04-08 | 新昌县开源汽车轴承有限公司 | A kind of novel oil seal structure |
| CN104791494A (en) * | 2015-04-24 | 2015-07-22 | 马鞍山市格林矿冶环保设备有限公司 | Movable sealing device and use method thereof |
| CN107532729A (en) * | 2015-05-13 | 2018-01-02 | 株式会社开滋 | The seal construction and valve filler of fixed ball valve and valve |
| CN106286840A (en) * | 2016-09-30 | 2017-01-04 | 桂林端面油封科技有限公司 | A kind of axial lip shape seal device of rotary shaft |
| CN106594009A (en) * | 2016-12-31 | 2017-04-26 | 杭州水处理技术研究开发中心有限公司 | External drive rotor type energy recycling device |
| CN111828644A (en) * | 2020-08-11 | 2020-10-27 | 国电大渡河检修安装有限公司 | Combined sealing device |
| CN113236777A (en) * | 2021-03-25 | 2021-08-10 | 西安近代化学研究所 | Mechanical connecting device capable of filling gaps of different sizes, having no assembling extrusion force and having supporting function |
Non-Patent Citations (1)
| Title |
|---|
| 云爆战斗部密封接口机械结构设计研究;许志峰;曹玉武;王世英;宋玉江;顾晓峰;;火工品;20200415(第02期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115217975A (en) | 2022-10-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106930866B (en) | A kind of solid-liquid rocket ground experiment jet pipe blocking cover structure | |
| CN112879564B (en) | Corrosion-resistant sealing device for generating continuous axial fitting force by utilizing Poisson effect | |
| CN115217975B (en) | Sealing device for converting axial force into radial extrusion bonding force | |
| CN201503332U (en) | Packing box for hydraulic test on floating tube sheet end of floating head type heat exchanger | |
| CN109099311B (en) | Hydrogen cylinder relief valve | |
| CN115217976B (en) | Radial sealing device suitable for circular cross section polytetrafluoroethylene sealing washer | |
| CN112879566A (en) | Radial sealing device for compensating insufficient elasticity of material by improving resilience capability of structure | |
| CN113246059B (en) | Radial seal circle does not have assembly guiding device of cuting | |
| CN112161060A (en) | Device for realizing attachment and leakage prevention by utilizing coaxiality measuring instrument | |
| CN112879563B (en) | Sealing device for compressing sealing ring to improve sealing performance by utilizing expansion pressure of liquid body | |
| CN113611964A (en) | Steel gasket, lithium ion battery and sealed container with sealing function | |
| CN110203423B (en) | Initiating explosive device buffer device for satellite and rocket separation | |
| CN112901778B (en) | End face sealing device for threaded connection part | |
| CN109737263B (en) | High-pressure sealing method for pipe joint | |
| CN112880486B (en) | Reverse-stroke self-locking lasting torque output device | |
| CN219163623U (en) | Novel explosion-proof valve | |
| CN216112294U (en) | Vacuum ball valve | |
| CN117780926A (en) | Peristaltic caulking type sealing device | |
| CN112879565B (en) | Corrosion-resistant radial cylindrical surface sealing device | |
| EP2634379A1 (en) | Compression Sleeve Seal | |
| CN113847428B (en) | Balanced pressure sealing device | |
| CN115420150B (en) | Device for realizing pressure relief through polytetrafluoroethylene membrane deformation | |
| CN113864452B (en) | Corrosion-resistant leakage-proof device for realizing full-space isobaric stress state through free movement of sealing ring | |
| CN103277551A (en) | Corrugated pipe sealing rupture disk device | |
| CN201575243U (en) | Stainless steel special rubber composite type sealing sleeve chuck |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |