CN112096862A - Anti-leakage device based on coaxiality measuring instrument - Google Patents
Anti-leakage device based on coaxiality measuring instrument Download PDFInfo
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- CN112096862A CN112096862A CN202010863270.0A CN202010863270A CN112096862A CN 112096862 A CN112096862 A CN 112096862A CN 202010863270 A CN202010863270 A CN 202010863270A CN 112096862 A CN112096862 A CN 112096862A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/061—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with positioning means
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Abstract
The invention discloses a leakage-proof device based on a coaxiality measuring instrument, wherein a medicine loading port 1 is a warhead medicine loading port, the upper end surface of the medicine loading port 1 is a first upper end plane, the first upper end plane of the medicine loading port 1 is a rugged end surface, a first round hole is formed in the first upper end plane of the medicine loading port 1, the inner side surface of the first round hole of the medicine loading port 1 is a first inner cylindrical surface, the first inner cylindrical surface of the medicine loading port 1 is a rugged cylindrical surface, and the first round hole of the medicine loading port 1 is used for loading warhead medicine into a warhead inner cavity; the sealing ring is internally extruded by high-pressure gas, and the shape of the sealing ring is correspondingly adjusted according to the protrusion and the depression degree of the inner cylindrical surface of the medicine loading port under the action of the internal gas pressure of the sealing ring, and the sealing ring is in tight joint contact with the inner cylindrical surface, so that the sealing of the uneven cylindrical surface is realized, and the use reliability of a warhead is ensured.
Description
Technical Field
The invention belongs to the technical field of sealing devices, relates to an annular sealing device, and particularly relates to a leakage-proof device based on a coaxiality measuring instrument.
Background
The high-energy liquid-phase fuel is filled in the body detonation warhead, the high-energy liquid-phase fuel is thrown into the air under the action of explosive detonation throwing driving, the high-energy liquid-phase fuel is atomized and mixed with the air to form a large-range active cloud cluster, and the active cloud cluster generates body detonation through secondary detonation of the explosive to release strong shock waves, wherein the shock wave power exceeds the explosive power of TNT with multiple times of mass, and the high-energy liquid-phase fuel is one of non-nuclear weapons with the largest power.
The improvement of the explosive power of the body detonation warhead mainly depends on the improvement of the energy of the internally filled fuel, and the improvement is reported in the literature "high power FAE liquid fuel optimization selection" (fire and explosive bulletin 2016, page 14 of 3 rd year): the metal powder is added into the liquid fuel, the liquid fuel and the metal powder are mixed to form the solid-liquid mixed fuel, and the energy of the fuel in the body detonation warhead can be greatly improved due to the high heat value of the metal powder. After mixing the solid-liquid phase mixed fuel, adding gelling agent to avoid the layering of the metal powder and liquid phase fuel mixture under the action of gravity.
The shell of the body detonation warhead is a cavity with sealing property inside, the top end is provided with a loading port, gelled solid-liquid phase mixed fuel is loaded through the loading port, and then the loading port is sealed. The sealing method used is as follows: the upper end of the medicine charging port is provided with the cover plate, the cylindrical boss at the lower end of the cover plate is provided with the annular sealing groove, the annular sealing ring is arranged in the sealing groove, and the sealing ring is respectively in close contact with the cylindrical boss at the lower end of the cover plate and the inner cylindrical surface at the medicine charging port to realize sealing.
However, in the actual charging process, the solid-liquid phase mixed fuel and the gel are uniformly mixed in the kneader and then are poured into the warhead shell. To ensure filling, the fuel mixture is usually filled until it overflows. And cleaning the overflowing mixed fuel. However, the metal powder after gelation has a large adhesive force, and the metal powder outside the drug loading port and at the inner cylindrical surface is firmly adhered and adhered into a block, so that the complete cleaning is difficult. The mixed fuel itself is sensitive to friction and shock, and metal powder that cannot be cleaned is generally not cleaned any longer for safety. Residual metal powder makes the interior cylinder surface of charge mouth uneven, and the interior cylinder surface of charge mouth becomes uneven cylinder surface, and when charge mouth department installation apron, the sealing washer of installation on the apron lower extreme cylinder boss and the interior cylinder surface of charge mouth are difficult again the contact of tight thread joint. After the assembly is completed, the sealing ring is annularly different in extruded degree of each part upwards, the sealing ring is fully extruded at the convex part of the inner cylindrical surface of the charging port, sealing can be realized, and the sealing ring is not sufficiently extruded at the concave part of the inner cylindrical surface of the charging port, so that sealing cannot be realized. Once a leak occurs, it will cause the warhead to fail.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a leakage-proof device based on a coaxiality measuring instrument, wherein a sealing ring is subjected to inner side extrusion by high-pressure gas, the sealing ring can be circumferentially adjusted by a circle according to the convex-concave degree of the plane of the inner cylindrical surface of a charging opening under the action of the inner side gas pressure, and after the installation is finished, the sealing ring is correspondingly adjusted in shape according to the convex degree and the concave degree of the inner cylindrical surface of the charging opening and is in tight joint contact with the sealing ring, so that the sealing of the uneven cylindrical surface is realized, and the use reliability of a warhead is ensured.
The invention provides a leakage-proof device based on a coaxiality measuring instrument, which comprises the coaxiality measuring instrument, a medicine loading opening 1, a circumferential sealing ring 3, a sealing cover plate 2, a pressurizing cover plate 4, a pressurizing sealing ring 5 and a pressurizing power bolt 6, wherein the pressurizing power bolt is arranged on the sealing cover plate 4;
the loading port 1 is a warhead loading port, the upper end face of the loading port 1 is a first upper end plane, the first upper end plane of the loading port 1 is a rugged end face, a first round hole is formed in the first upper end plane of the loading port 1, the inner side face of the first round hole of the loading port 1 is a first inner cylindrical surface, the first inner cylindrical surface of the loading port 1 is a rugged cylindrical surface, and the first round hole of the loading port 1 is used for loading warhead loading into a warhead inner cavity;
the axis of a first round hole of the medicine loading port 1 is vertical to the ground;
the sealing cover plate 2 is a second circular plate, the second circular plate of the sealing cover plate 2 is a revolving body, a second lower end circular boss is arranged on the lower end face of the second circular plate of the sealing cover plate 2, the side face of the second lower end circular boss of the sealing cover plate 2 is a second outer cylindrical surface, a second annular groove is arranged on the second outer cylindrical surface of the sealing cover plate 2, a second circular groove is arranged on the upper end face of the second circular plate of the sealing cover plate 2, the inner side face of the second circular groove of the sealing cover plate 2 is a second inner cylindrical surface, second circular through holes are uniformly distributed in the circumferential direction at the lower end of the second inner cylindrical surface of the sealing cover plate 2, the second annular groove and the second circular groove are communicated through the second circular through holes of the sealing cover plate 2, and second threaded holes are uniformly distributed in the circumferential direction on the upper;
the axis of a rotary body of the sealing cover plate 2 coincides with the axis of a first round hole of the medicine charging port 1, the sealing cover plate 2 is positioned at the upper end of the medicine charging port 1, the sealing cover plate 2 is connected with the medicine charging port 1 through a second screw, the lower end of a second circular plate of the sealing cover plate 2 is contacted with a convex part of a first upper end plane of the medicine charging port 1, and a second outer cylindrical surface of the sealing cover plate 2 is contacted with a convex part of a first inner cylindrical surface of the medicine charging port 1;
the annular sealing ring 3 is a third circular ring body, the third circular ring body of the annular sealing ring 3 is a revolving body, the revolving section of the third circular ring body of the annular sealing ring 3 is circular, and the annular sealing ring 3 is made of rubber;
the axis of a revolving body of the annular sealing ring 3 is superposed with the axis of a revolving body of the sealing cover plate 2, the annular sealing ring 3 is positioned in a second annular groove of the sealing cover plate 2, and the outer diameter of the annular sealing ring 3 is contacted with a first inner cylindrical surface of the medicine charging port 1;
the pressurizing cover plate 4 is a fourth circular plate, the fourth circular plate of the pressurizing cover plate 4 is a revolving body, the edge of the upper end face of the fourth circular plate of the pressurizing cover plate 4 is provided with fourth circular through holes which are uniformly distributed in the circumferential direction, the lower end face of the fourth circular plate of the pressurizing cover plate 4 is provided with a fourth lower end circular boss, the side face of the fourth lower end circular boss of the pressurizing cover plate 4 is a fourth outer cylindrical surface, and the fourth outer cylindrical surface of the pressurizing cover plate 4 is provided with a fourth annular groove;
the axis of the revolving body of the pressurizing cover plate 4 is superposed with the axis of the revolving body of the sealing cover plate 2, the pressurizing cover plate 4 is positioned at the upper end of the sealing cover plate 2, and the fourth outer cylindrical surface of the pressurizing cover plate 4 is in sliding fit contact with the second inner cylindrical surface of the sealing cover plate 2;
the pressurizing sealing ring 5 is a fifth ring body, the fifth ring body of the pressurizing sealing ring 5 is a revolving body, the revolving section of the fifth ring body of the pressurizing sealing ring 5 is circular, and the pressurizing sealing ring 5 is made of rubber;
the axis of the revolving body of the pressurizing sealing ring 5 is superposed with the axis of the revolving body of the pressurizing cover plate 4, the pressurizing sealing ring 5 is positioned in a fourth annular groove of the pressurizing cover plate 4, and the outer diameter of the pressurizing sealing ring 5 is contacted with a second inner cylindrical surface of the sealing cover plate 2;
the pressurizing power bolt 6 is a hexagon socket head cap screw, the pressurizing power bolt 6 is installed in a fourth circular through hole of the pressurizing cover plate 4, the lower end of the pressurizing power bolt 6 is assembled with a second threaded hole of the sealing cover plate 2, and the pressurizing power bolt 6 presses a fourth lower end circular boss of the pressurizing cover plate 4 into a second circular groove of the sealing cover plate 2, so that the pressure of air originally located in the second circular groove of the sealing cover plate 2 is gradually increased along with the reduction of the volume.
The ratio of the width of the second annular groove of the sealing cover plate 2 to the diameter of the rotary section of the third annular body of the annular sealing ring 3 is 1: 1.2 to 1.4;
and a fourth lower end circular boss of the pressurizing cover plate 4 is pressed into a second circular groove of the sealing cover plate 2, the pressure of air in the second circular groove of the sealing cover plate 2 is gradually increased along with the reduction of the volume, and after the pressurizing cover plate 4 and the sealing cover plate 2 are assembled, the pressure of air in the second circular groove of the sealing cover plate 2 is 2.2-4.3 MPa.
Regarding the ratio of the width of the second annular groove of the sealing cover plate 2 to the diameter of the revolving cross section of the third annular body of the annular sealing ring 3, and the air pressure in the second annular groove of the sealing cover plate 2 after the assembly of the pressure cover plate 4 and the sealing cover plate 2 is completed, any one of the following 2 ways can be adopted:
implementation mode 1: the ratio of the width of the second annular groove of the sealing cover plate 2 to the diameter of the rotary section of the third annular body of the annular sealing ring 3 is 1: 1.2;
the circular boss at the fourth lower end of the pressurizing cover plate 4 is pressed into the second circular groove of the sealing cover plate 2, the pressure of air in the second circular groove of the sealing cover plate 2 is gradually increased along with the reduction of the volume, and after the pressurizing cover plate 4 and the sealing cover plate 2 are assembled, the pressure of air in the second circular groove of the sealing cover plate 2 is 2.2 MPa.
Implementation mode 2: the ratio of the width of the second annular groove of the sealing cover plate 2 to the diameter of the rotary section of the third annular body of the annular sealing ring 3 is 1: 1.4;
the circular boss at the fourth lower end of the pressurizing cover plate 4 is pressed into the second circular groove of the sealing cover plate 2, the pressure of air in the second circular groove of the sealing cover plate 2 is gradually increased along with the reduction of the volume, and after the pressurizing cover plate 4 and the sealing cover plate 2 are assembled, the pressure of air in the second circular groove of the sealing cover plate 2 is 4.3 MPa.
The invention discloses a leakage-proof device based on a coaxiality measuring instrument, which brings the following technical effects:
according to the sealing device, a sealing ring at the lower end of a sealing cover plate is in contact with the uneven inner cylindrical surface of a medicine charging opening, a pressurizing cover plate is mounted on the sealing cover plate, air is compressed by the pressurizing cover plate to form high-pressure gas, the high-pressure gas is communicated with the inner side of the inner sealing ring, so that the sealing ring moves outwards under the driving of the inner high-pressure gas; the depressed part of the end face of the medicine loading opening is also compressed by the high-pressure gas extrusion seal ring, so that sealing is realized. After the installation is finished, the sealing ring correspondingly adjusts the shape of the sealing ring according to the protrusion and the depression degree of the inner cylindrical surface of the medicine loading port, and the sealing ring is in tight joint contact with the sealing ring, so that the sealing of the uneven cylindrical surface is realized, and the use reliability of the warhead is ensured.
Drawings
Fig. 1 is a schematic structural diagram of a leakage prevention device based on a coaxiality measuring instrument. 1. The device comprises a medicine filling opening, 2 a sealing cover plate, 3 a circumferential sealing ring, 4 a pressurizing cover plate, 5 a pressurizing sealing ring and 6 a pressurizing power bolt.
Detailed Description
The present invention is further described in detail with reference to the drawings and examples, it should be noted that the present invention is not limited to the following examples, and equivalent changes based on the technical scheme of the present invention are within the scope of the present invention.
Example 1:
as shown in fig. 1, the embodiment provides a leakage-proof device based on a coaxiality measuring instrument, which comprises the coaxiality measuring instrument, a medicine loading opening 1, a circumferential sealing ring 3, a sealing cover plate 2, a pressurizing cover plate 4, a pressurizing sealing ring 5 and a pressurizing power bolt 6;
the loading port 1 is a warhead loading port, the upper end face of the loading port 1 is a first upper end plane, the first upper end plane of the loading port 1 is a rugged end face, a first round hole is formed in the first upper end plane of the loading port 1, the inner side face of the first round hole of the loading port 1 is a first inner cylindrical surface, the first inner cylindrical surface of the loading port 1 is a rugged cylindrical surface, and the first round hole of the loading port 1 is used for loading warhead loading into a warhead inner cavity;
the axis of a first round hole of the medicine loading port 1 is vertical to the ground;
the sealing cover plate 2 is a second circular plate, the second circular plate of the sealing cover plate 2 is a revolving body, a second lower end circular boss is arranged on the lower end face of the second circular plate of the sealing cover plate 2, the side face of the second lower end circular boss of the sealing cover plate 2 is a second outer cylindrical surface, a second annular groove is arranged on the second outer cylindrical surface of the sealing cover plate 2, a second circular groove is arranged on the upper end face of the second circular plate of the sealing cover plate 2, the inner side face of the second circular groove of the sealing cover plate 2 is a second inner cylindrical surface, second circular through holes are uniformly distributed in the circumferential direction at the lower end of the second inner cylindrical surface of the sealing cover plate 2, the second annular groove and the second circular groove are communicated through the second circular through holes of the sealing cover plate 2, and second threaded holes are uniformly distributed in the circumferential direction on the upper;
the axis of a rotary body of the sealing cover plate 2 coincides with the axis of a first round hole of the medicine charging port 1, the sealing cover plate 2 is positioned at the upper end of the medicine charging port 1, the sealing cover plate 2 is connected with the medicine charging port 1 through a second screw, the lower end of a second circular plate of the sealing cover plate 2 is contacted with a convex part of a first upper end plane of the medicine charging port 1, and a second outer cylindrical surface of the sealing cover plate 2 is contacted with a convex part of a first inner cylindrical surface of the medicine charging port 1;
the annular sealing ring 3 is a third circular ring body, the third circular ring body of the annular sealing ring 3 is a revolving body, the revolving section of the third circular ring body of the annular sealing ring 3 is circular, and the annular sealing ring 3 is made of rubber;
the axis of a revolving body of the annular sealing ring 3 is superposed with the axis of a revolving body of the sealing cover plate 2, the annular sealing ring 3 is positioned in a second annular groove of the sealing cover plate 2, and the outer diameter of the annular sealing ring 3 is contacted with a first inner cylindrical surface of the medicine charging port 1;
the pressurizing cover plate 4 is a fourth circular plate, the fourth circular plate of the pressurizing cover plate 4 is a revolving body, the edge of the upper end face of the fourth circular plate of the pressurizing cover plate 4 is provided with fourth circular through holes which are uniformly distributed in the circumferential direction, the lower end face of the fourth circular plate of the pressurizing cover plate 4 is provided with a fourth lower end circular boss, the side face of the fourth lower end circular boss of the pressurizing cover plate 4 is a fourth outer cylindrical surface, and the fourth outer cylindrical surface of the pressurizing cover plate 4 is provided with a fourth annular groove;
the axis of the revolving body of the pressurizing cover plate 4 is superposed with the axis of the revolving body of the sealing cover plate 2, the pressurizing cover plate 4 is positioned at the upper end of the sealing cover plate 2, and the fourth outer cylindrical surface of the pressurizing cover plate 4 is in sliding fit contact with the second inner cylindrical surface of the sealing cover plate 2;
the pressurizing sealing ring 5 is a fifth ring body, the fifth ring body of the pressurizing sealing ring 5 is a revolving body, the revolving section of the fifth ring body of the pressurizing sealing ring 5 is circular, and the pressurizing sealing ring 5 is made of rubber;
the axis of the revolving body of the pressurizing sealing ring 5 is superposed with the axis of the revolving body of the pressurizing cover plate 4, the pressurizing sealing ring 5 is positioned in a fourth annular groove of the pressurizing cover plate 4, and the outer diameter of the pressurizing sealing ring 5 is contacted with a second inner cylindrical surface of the sealing cover plate 2;
the pressurizing power bolt 6 is a hexagon socket head cap screw, the pressurizing power bolt 6 is installed in a fourth circular through hole of the pressurizing cover plate 4, the lower end of the pressurizing power bolt 6 is assembled with a second threaded hole of the sealing cover plate 2, and the pressurizing power bolt 6 presses a fourth lower end circular boss of the pressurizing cover plate 4 into a second circular groove of the sealing cover plate 2, so that the pressure of air originally located in the second circular groove of the sealing cover plate 2 is gradually increased along with the reduction of the volume.
The using method and the working principle of the invention are as follows:
the inner cylindrical surface of the medicine charging port 1 is uneven, the conventional circumferential sealing mode cannot tightly fit the seam due to the fact that the sealing ring is in contact with the uneven cylindrical surface, the protruding part can be closely matched to realize sealing, the pressing force of the recessed part is insufficient, and leakage is easy to occur. The invention is an innovation point of the conventional scheme that the inner surface of the sealing ring is connected with high-pressure gas, the high-pressure gas can drive the rubber sealing ring to enable the sealing ring to generate radial outward displacement, namely, the sealing ring moves outwards under the action of the inner side gas pressure and is in tight threaded joint contact with a cylindrical surface which is uneven on the outer side, and the inner side gas pressure of the sealing ring in the circumference is a fixed value, so that each point in the circumference of the sealing ring can be extruded, the sealing ring cannot be extruded by the inner side of one cylindrical surface like the original scheme, only the convex part exists, and the space is compressed, the extrusion force is large, the space of the concave part is large, and the extrusion degree is insufficient. By high-pressure gas extrusion sealing washer in the inboard, can guarantee the extruded homogeneity of sealing ring hoop, the tight silk close joint contact back of the interior cylindrical surface convex-concave department of final sealing washer and charge mouth 1 realizes sealed between sealing washer and the charge mouth 1, between sealing washer and the sealed apron 2, because the annular groove axial extrusion sealing washer of sealed apron 2, also realize sealed between sealing washer and the sealed apron 2 to make and realize sealed between charge mouth 1 and the sealed apron 2.
The high-pressure gas that presses the pressure seal ring 5 is compressed by the normal-pressure gas volume. The gas in the groove at the upper end of the sealing cover plate 2 enters the groove at the upper end of the sealing cover plate 2 due to the lower end boss of the pressurizing cover plate 4, the pressurizing cover plate 4 and the sealing cover plate 2 are sealed, the amount of the gas in the groove at the upper end of the sealing cover plate 2 is not changed, and only the existing volume is compressed, so that the pressure is gradually increased until high-pressure gas is formed.
In the process that the boss at the lower end of the pressurizing cover plate 4 enters the groove at the upper end of the sealing cover plate 2, the pressurizing power bolt 6 plays a role in power propulsion, the pressurizing power bolt 6 and the threaded hole at the upper end of the sealing cover plate 2 gradually enter, namely the process that the pressurizing cover plate 4 gradually descends, and along with the descending of the pressurizing cover plate 4, air in the circular groove at the upper end of the sealing cover plate 2 is extruded to form high-pressure gas.
When the ratio of the width of the second annular groove of the sealing cover plate 2 to the diameter of the rotary section of the third annular body of the annular sealing ring 3 is too small, the annular sealing ring 3 and the second annular groove of the sealing cover plate 2 are difficult to assemble, and if the annular sealing ring 3 is excessively extruded, plastic deformation can occur, and the sealing effect is lost. When the ratio of the width of the second annular groove of the sealing cover plate 2 to the diameter of the rotary section of the third annular body of the annular sealing ring 3 is too large, the compression amount of the annular sealing ring 3 is too small, and the annular sealing ring 3 and the second annular groove of the sealing cover plate 2 are difficult to seal, so that the invention is out of action. Through a large amount of experiments, it is found that the ratio of the width of the second annular groove of the sealing cover plate 2 to the diameter of the rotary section of the third annular body of the annular sealing ring 3 is 1: 1.2-1.4, the above problems can be avoided, the above functions can be realized, and the use requirements can be met.
In this embodiment, the ratio of the width of the second annular groove of the sealing cover plate 2 to the diameter of the turning section of the third annular body of the annular sealing ring 3 is 1: 1.2;
the fourth lower end circular boss of the pressurizing cover plate 4 is pressed into the second circular groove of the sealing cover plate 2, the pressure intensity of air in the second circular groove of the sealing cover plate 2 is gradually increased along with the reduction of the volume, after the pressurizing cover plate 4 and the sealing cover plate 2 are assembled, when the air pressure intensity in the second circular groove of the sealing cover plate 2 is too small, the pressure of the gas for extruding the pressurizing sealing ring 5 is too small, the fitting degree of the pressurizing sealing ring 5 and the convex-concave uneven cylindrical surface of the inner surface of the medicine loading port 1 is reduced, and leakage is easy to occur. After the pressurizing cover plate 4 and the sealing cover plate 2 are assembled, when the air pressure in the second circular groove of the sealing cover plate 2 is too large, the pressurizing sealing ring 5 is excessively extruded, plastic deformation is easy to occur, elasticity is lost, and therefore the sealing performance is lost, and leakage is caused. A large number of experiments find that after the pressurizing cover plate 4 and the sealing cover plate 2 are assembled, when the air pressure in the second circular groove of the sealing cover plate 2 is 2.2-4.3 MPa, the problems can be avoided, the functions can be realized, and the use requirements are met.
In this embodiment, after the pressure cover plate 4 and the sealing cover plate 2 are assembled, the air pressure in the second circular groove of the sealing cover plate 2 is 2.2 MPa.
The sealing performance tests of the scheme and the original scheme are carried out, twenty warheads are selected respectively, fifteen warheads in the original scheme are leaked after the twenty warheads are charged, and five seals are intact. After twenty warhead charges are completed, twenty warhead charges are completely sealed.
According to the leakage-proof device based on the coaxiality measuring instrument, the sealing ring at the lower end of the sealing cover plate is in contact with the uneven inner cylindrical surface of the medicine loading opening, the pressurizing cover plate is mounted on the sealing cover plate, the pressurizing cover plate compresses air to form high-pressure gas, the high-pressure gas is communicated with the inner side of the inner sealing ring, so that the sealing ring moves outwards under the driving of the inner high-pressure gas; the depressed part of the end face of the medicine loading opening is also compressed by the high-pressure gas extrusion seal ring, so that sealing is realized. After the installation is finished, the sealing ring correspondingly adjusts the shape of the sealing ring according to the protrusion and the depression degree of the inner cylindrical surface of the medicine loading port, and the sealing ring is in tight joint contact with the sealing ring, so that the sealing of the uneven cylindrical surface is realized, and the use reliability of the warhead is ensured.
Example 2:
as shown in fig. 1, the embodiment provides a leakage-proof device based on a coaxiality measuring instrument, which comprises a medicine loading opening 1, a circumferential sealing ring 3, a sealing cover plate 2, a pressurizing cover plate 4, a pressurizing sealing ring 5 and a pressurizing power bolt 6;
the loading port 1 is a warhead loading port, the upper end face of the loading port 1 is a first upper end plane, the first upper end plane of the loading port 1 is a rugged end face, a first round hole is formed in the first upper end plane of the loading port 1, the inner side face of the first round hole of the loading port 1 is a first inner cylindrical surface, the first inner cylindrical surface of the loading port 1 is a rugged cylindrical surface, and the first round hole of the loading port 1 is used for loading warhead loading into a warhead inner cavity;
the axis of a first round hole of the medicine loading port 1 is vertical to the ground;
the sealing cover plate 2 is a second circular plate, the second circular plate of the sealing cover plate 2 is a revolving body, a second lower end circular boss is arranged on the lower end face of the second circular plate of the sealing cover plate 2, the side face of the second lower end circular boss of the sealing cover plate 2 is a second outer cylindrical surface, a second annular groove is arranged on the second outer cylindrical surface of the sealing cover plate 2, a second circular groove is arranged on the upper end face of the second circular plate of the sealing cover plate 2, the inner side face of the second circular groove of the sealing cover plate 2 is a second inner cylindrical surface, second circular through holes are uniformly distributed in the circumferential direction at the lower end of the second inner cylindrical surface of the sealing cover plate 2, the second annular groove and the second circular groove are communicated through the second circular through holes of the sealing cover plate 2, and second threaded holes are uniformly distributed in the circumferential direction on the upper;
the axis of a rotary body of the sealing cover plate 2 coincides with the axis of a first round hole of the medicine charging port 1, the sealing cover plate 2 is positioned at the upper end of the medicine charging port 1, the sealing cover plate 2 is connected with the medicine charging port 1 through a second screw, the lower end of a second circular plate of the sealing cover plate 2 is contacted with a convex part of a first upper end plane of the medicine charging port 1, and a second outer cylindrical surface of the sealing cover plate 2 is contacted with a convex part of a first inner cylindrical surface of the medicine charging port 1;
the annular sealing ring 3 is a third circular ring body, the third circular ring body of the annular sealing ring 3 is a revolving body, the revolving section of the third circular ring body of the annular sealing ring 3 is circular, and the annular sealing ring 3 is made of rubber;
the axis of a revolving body of the annular sealing ring 3 is superposed with the axis of a revolving body of the sealing cover plate 2, the annular sealing ring 3 is positioned in a second annular groove of the sealing cover plate 2, and the outer diameter of the annular sealing ring 3 is contacted with a first inner cylindrical surface of the medicine charging port 1;
the pressurizing cover plate 4 is a fourth circular plate, the fourth circular plate of the pressurizing cover plate 4 is a revolving body, the edge of the upper end face of the fourth circular plate of the pressurizing cover plate 4 is provided with fourth circular through holes which are uniformly distributed in the circumferential direction, the lower end face of the fourth circular plate of the pressurizing cover plate 4 is provided with a fourth lower end circular boss, the side face of the fourth lower end circular boss of the pressurizing cover plate 4 is a fourth outer cylindrical surface, and the fourth outer cylindrical surface of the pressurizing cover plate 4 is provided with a fourth annular groove;
the axis of the revolving body of the pressurizing cover plate 4 is superposed with the axis of the revolving body of the sealing cover plate 2, the pressurizing cover plate 4 is positioned at the upper end of the sealing cover plate 2, and the fourth outer cylindrical surface of the pressurizing cover plate 4 is in sliding fit contact with the second inner cylindrical surface of the sealing cover plate 2;
the pressurizing sealing ring 5 is a fifth ring body, the fifth ring body of the pressurizing sealing ring 5 is a revolving body, the revolving section of the fifth ring body of the pressurizing sealing ring 5 is circular, and the pressurizing sealing ring 5 is made of rubber;
the axis of the revolving body of the pressurizing sealing ring 5 is superposed with the axis of the revolving body of the pressurizing cover plate 4, the pressurizing sealing ring 5 is positioned in a fourth annular groove of the pressurizing cover plate 4, and the outer diameter of the pressurizing sealing ring 5 is contacted with a second inner cylindrical surface of the sealing cover plate 2;
the pressurizing power bolt 6 is a hexagon socket head cap screw, the pressurizing power bolt 6 is installed in a fourth circular through hole of the pressurizing cover plate 4, the lower end of the pressurizing power bolt 6 is assembled with a second threaded hole of the sealing cover plate 2, and the pressurizing power bolt 6 presses a fourth lower end circular boss of the pressurizing cover plate 4 into a second circular groove of the sealing cover plate 2, so that the pressure of air originally located in the second circular groove of the sealing cover plate 2 is gradually increased along with the reduction of the volume.
The using method and the working principle of the invention are as follows:
the inner cylindrical surface of the medicine charging port 1 is uneven, the conventional circumferential sealing mode cannot tightly fit the seam due to the fact that the sealing ring is in contact with the uneven cylindrical surface, the protruding part can be closely matched to realize sealing, the pressing force of the recessed part is insufficient, and leakage is easy to occur. The invention is an innovation point of the conventional scheme that the inner surface of the sealing ring is connected with high-pressure gas, the high-pressure gas can drive the rubber sealing ring to enable the sealing ring to generate radial outward displacement, namely, the sealing ring moves outwards under the action of the inner side gas pressure and is in tight threaded joint contact with a cylindrical surface which is uneven on the outer side, and the inner side gas pressure of the sealing ring in the circumference is a fixed value, so that each point in the circumference of the sealing ring can be extruded, the sealing ring cannot be extruded by the inner side of one cylindrical surface like the original scheme, only the convex part exists, and the space is compressed, the extrusion force is large, the space of the concave part is large, and the extrusion degree is insufficient. By high-pressure gas extrusion sealing washer in the inboard, can guarantee the extruded homogeneity of sealing ring hoop, the tight silk close joint contact back of the interior cylindrical surface convex-concave department of final sealing washer and charge mouth 1 realizes sealed between sealing washer and the charge mouth 1, between sealing washer and the sealed apron 2, because the annular groove axial extrusion sealing washer of sealed apron 2, also realize sealed between sealing washer and the sealed apron 2 to make and realize sealed between charge mouth 1 and the sealed apron 2.
The high-pressure gas that presses the pressure seal ring 5 is compressed by the normal-pressure gas volume. The gas in the groove at the upper end of the sealing cover plate 2 enters the groove at the upper end of the sealing cover plate 2 due to the lower end boss of the pressurizing cover plate 4, the pressurizing cover plate 4 and the sealing cover plate 2 are sealed, the amount of the gas in the groove at the upper end of the sealing cover plate 2 is not changed, and only the existing volume is compressed, so that the pressure is gradually increased until high-pressure gas is formed.
In the process that the boss at the lower end of the pressurizing cover plate 4 enters the groove at the upper end of the sealing cover plate 2, the pressurizing power bolt 6 plays a role in power propulsion, the pressurizing power bolt 6 and the threaded hole at the upper end of the sealing cover plate 2 gradually enter, namely the process that the pressurizing cover plate 4 gradually descends, and along with the descending of the pressurizing cover plate 4, air in the circular groove at the upper end of the sealing cover plate 2 is extruded to form high-pressure gas.
When the ratio of the width of the second annular groove of the sealing cover plate 2 to the diameter of the rotary section of the third annular body of the annular sealing ring 3 is too small, the annular sealing ring 3 and the second annular groove of the sealing cover plate 2 are difficult to assemble, and if the annular sealing ring 3 is excessively extruded, plastic deformation can occur, and the sealing effect is lost. When the ratio of the width of the second annular groove of the sealing cover plate 2 to the diameter of the rotary section of the third annular body of the annular sealing ring 3 is too large, the compression amount of the annular sealing ring 3 is too small, and the annular sealing ring 3 and the second annular groove of the sealing cover plate 2 are difficult to seal, so that the invention is out of action. Through a large amount of experiments, it is found that the ratio of the width of the second annular groove of the sealing cover plate 2 to the diameter of the rotary section of the third annular body of the annular sealing ring 3 is 1: 1.2-1.4, the above problems can be avoided, the above functions can be realized, and the use requirements can be met.
In this embodiment, the ratio of the width of the second annular groove of the sealing cover plate 2 to the diameter of the turning section of the third annular body of the annular sealing ring 3 is 1: 1.4;
the fourth lower end circular boss of the pressurizing cover plate 4 is pressed into the second circular groove of the sealing cover plate 2, the pressure intensity of air in the second circular groove of the sealing cover plate 2 is gradually increased along with the reduction of the volume, after the pressurizing cover plate 4 and the sealing cover plate 2 are assembled, when the air pressure intensity in the second circular groove of the sealing cover plate 2 is too small, the pressure of the gas for extruding the pressurizing sealing ring 5 is too small, the fitting degree of the pressurizing sealing ring 5 and the convex-concave uneven cylindrical surface of the inner surface of the medicine loading port 1 is reduced, and leakage is easy to occur. After the pressurizing cover plate 4 and the sealing cover plate 2 are assembled, when the air pressure in the second circular groove of the sealing cover plate 2 is too large, the pressurizing sealing ring 5 is excessively extruded, plastic deformation is easy to occur, elasticity is lost, and therefore the sealing performance is lost, and leakage is caused. A large number of experiments find that after the pressurizing cover plate 4 and the sealing cover plate 2 are assembled, when the air pressure in the second circular groove of the sealing cover plate 2 is 2.2-4.3 MPa, the problems can be avoided, the functions can be realized, and the use requirements are met.
In this embodiment, after the pressure cover plate 4 and the sealing cover plate 2 are assembled, the air pressure in the second circular groove of the sealing cover plate 2 is 4.3 MPa.
The sealing performance tests of the scheme and the original scheme are carried out, twenty warheads are selected respectively, fifteen warheads in the original scheme are leaked after the twenty warheads are charged, and five seals are intact. After twenty warhead charges are completed, twenty warhead charges are completely sealed.
According to the leakage-proof device based on the coaxiality measuring instrument, the sealing ring at the lower end of the sealing cover plate is in contact with the uneven inner cylindrical surface of the medicine loading opening, the pressurizing cover plate is mounted on the sealing cover plate, the pressurizing cover plate compresses air to form high-pressure gas, the high-pressure gas is communicated with the inner side of the inner sealing ring, so that the sealing ring moves outwards under the driving of the inner high-pressure gas; the depressed part of the end face of the medicine loading opening is also compressed by the high-pressure gas extrusion seal ring, so that sealing is realized. After the installation is finished, the sealing ring correspondingly adjusts the shape of the sealing ring according to the protrusion and the depression degree of the inner cylindrical surface of the medicine loading port, and the sealing ring is in tight joint contact with the sealing ring, so that the sealing of the uneven cylindrical surface is realized, and the use reliability of the warhead is ensured.
Claims (3)
1. A leakage-proof device based on a coaxiality measuring instrument comprises the coaxiality measuring instrument, a medicine loading opening (1) and a circumferential sealing ring (3), and is characterized by further comprising a sealing cover plate (2), a pressurizing cover plate (4), a pressurizing sealing ring (5) and a pressurizing power bolt (6);
the loading port (1) is a warhead loading port, the upper end face of the loading port (1) is a first upper end plane, the first upper end plane of the loading port (1) is a rugged end face, a first round hole is formed in the first upper end plane of the loading port (1), the inner side face of the first round hole of the loading port (1) is a first inner cylindrical surface, the first inner cylindrical surface of the loading port (1) is a rugged cylindrical surface, and the first round hole of the loading port (1) is used for loading warhead powder into a warhead inner cavity;
the axis of a first round hole of the medicine loading port (1) is vertical to the ground;
the sealing cover plate (2) is a second circular plate, the second circular plate of the sealing cover plate (2) is a revolving body, a second lower end circular boss is arranged on the lower end face of the second circular plate of the sealing cover plate (2), the side face of the second lower end circular boss of the sealing cover plate (2) is a second outer cylindrical surface, a second annular groove is arranged on the second outer cylindrical surface of the sealing cover plate (2), a second circular groove is arranged on the upper end face of the second circular plate of the sealing cover plate (2), the inner side face of the second circular groove of the sealing cover plate (2) is a second inner cylindrical surface, second circular through holes are uniformly distributed in the circumferential direction at the lower end of the second inner cylindrical surface of the sealing cover plate (2), the second annular groove and the second circular groove are communicated through the second circular through hole of the sealing cover plate (2), and second threaded holes are uniformly distributed in the circumferential direction on the upper end face of the second circular plate;
the axis of a revolving body of the sealing cover plate (2) coincides with the axis of a first round hole of the medicine charging port (1), the sealing cover plate (2) is positioned at the upper end of the medicine charging port (1), the sealing cover plate (2) is connected with the medicine charging port (1) through a second screw, the lower end of a second circular plate of the sealing cover plate (2) is contacted with a convex part of a first upper end plane of the medicine charging port (1), and a second outer cylindrical surface of the sealing cover plate (2) is contacted with a convex part of a first inner cylindrical surface of the medicine charging port (1);
the annular sealing ring (3) is a third circular ring body, the third circular ring body of the annular sealing ring (3) is a revolving body, the revolving section of the third circular ring body of the annular sealing ring (3) is circular, and the annular sealing ring (3) is made of rubber;
the axis of a revolving body of the annular sealing ring (3) is superposed with the axis of a revolving body of the sealing cover plate (2), the annular sealing ring (3) is positioned in a second annular groove of the sealing cover plate (2), and the outer diameter of the annular sealing ring (3) is contacted with a first inner cylindrical surface of the medicine charging port (1);
the pressurizing cover plate (4) is a fourth circular plate, the fourth circular plate of the pressurizing cover plate (4) is a revolving body, the edge of the upper end face of the fourth circular plate of the pressurizing cover plate (4) is provided with fourth circular through holes which are uniformly distributed in the circumferential direction, the lower end face of the fourth circular plate of the pressurizing cover plate (4) is provided with a fourth lower-end circular boss, the side face of the fourth lower-end circular boss of the pressurizing cover plate (4) is a fourth outer cylindrical surface, and a fourth annular groove is formed in the fourth outer cylindrical surface of the pressurizing cover plate (4);
the axis of the revolving body of the pressurizing cover plate (4) is superposed with the axis of the revolving body of the sealing cover plate (2), the pressurizing cover plate (4) is positioned at the upper end of the sealing cover plate (2), and the fourth outer cylindrical surface of the pressurizing cover plate (4) is in sliding fit contact with the second inner cylindrical surface of the sealing cover plate (2);
the pressurizing sealing ring (5) is a fifth ring body, the fifth ring body of the pressurizing sealing ring (5) is a revolving body, the revolving section of the fifth ring body of the pressurizing sealing ring (5) is circular, and the pressurizing sealing ring (5) is made of rubber;
the axis of the revolving body of the pressurizing sealing ring (5) is superposed with the axis of the revolving body of the pressurizing cover plate (4), the pressurizing sealing ring (5) is positioned in a fourth annular groove of the pressurizing cover plate (4), and the outer diameter of the pressurizing sealing ring (5) is contacted with a second inner cylindrical surface of the sealing cover plate (2);
the pressurizing power bolt (6) is a hexagon socket head cap screw, the pressurizing power bolt (6) is installed in the fourth circular through hole of the pressurizing cover plate (4), and the lower end of the pressurizing power bolt (6) is assembled with the second threaded hole of the sealing cover plate (2).
The circular boss at the fourth lower end of the pressurizing cover plate (4) is pressed into the second circular groove of the sealing cover plate (2), the air pressure in the second circular groove of the sealing cover plate (2) is gradually increased along with the reduction of the volume, and after the pressurizing cover plate (4) and the sealing cover plate (2) are assembled, the air pressure in the second circular groove of the sealing cover plate (2) is 2.2-4.3 MPa.
2. The anti-leakage device based on the coaxiality measuring instrument as recited in claim 1, wherein the circular boss at the fourth lower end of the pressurizing cover plate (4) is pressed into the second circular groove of the sealing cover plate (2), the air pressure in the second circular groove of the sealing cover plate (2) is gradually increased along with the reduction of the volume, and the air pressure in the second circular groove of the sealing cover plate (2) is 2.2MPa after the pressurizing cover plate (4) and the sealing cover plate (2) are assembled.
3. The anti-leakage device based on the coaxiality measuring instrument as recited in claim 1, wherein the circular boss at the fourth lower end of the pressurizing cover plate (4) is pressed into the second circular groove of the sealing cover plate (2), the air pressure in the second circular groove of the sealing cover plate (2) is gradually increased along with the reduction of the volume, and the air pressure in the second circular groove of the sealing cover plate (2) is 4.3MPa after the pressurizing cover plate (4) is assembled with the sealing cover plate (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010863270.0A CN112096862A (en) | 2020-08-25 | 2020-08-25 | Anti-leakage device based on coaxiality measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010863270.0A CN112096862A (en) | 2020-08-25 | 2020-08-25 | Anti-leakage device based on coaxiality measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112096862A true CN112096862A (en) | 2020-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010863270.0A Withdrawn CN112096862A (en) | 2020-08-25 | 2020-08-25 | Anti-leakage device based on coaxiality measuring instrument |
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| CN (1) | CN112096862A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115217976A (en) * | 2022-07-22 | 2022-10-21 | 西安近代化学研究所 | Radial sealing device suitable for circular cross section polytetrafluoroethylene sealing washer |
-
2020
- 2020-08-25 CN CN202010863270.0A patent/CN112096862A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115217976A (en) * | 2022-07-22 | 2022-10-21 | 西安近代化学研究所 | Radial sealing device suitable for circular cross section polytetrafluoroethylene sealing washer |
| CN115217976B (en) * | 2022-07-22 | 2024-05-10 | 西安近代化学研究所 | Radial sealing device suitable for circular cross section polytetrafluoroethylene sealing washer |
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Application publication date: 20201218 |