CN214404698U - Charging connector structure for charging sealing ring - Google Patents

Abstract

The utility model provides an inflating nozzle structure for an inflating sealing ring, which belongs to the field of sealing elements and comprises an inflating nozzle in an inverted T shape; the inflation nozzle comprises an air inlet pipe and a fixing piece, an air inlet channel is arranged in the air inlet pipe, one end of the air inlet channel is communicated with the outside, the other end of the air inlet channel is communicated with the inside of the inflatable sealing ring, the fixing piece is arranged on the outer ring of the lower end of the air inlet pipe, the fixing piece is embedded in the thickness layer of the inflatable sealing ring, and the lower end face of the air inlet pipe is overlapped with the inner wall of the inflatable sealing ring; the charging connector and the charging sealing ring are combined and fixed into a whole. The utility model discloses reduce the tearing force of faying face department, play the guard action to the gas tightness of faying face.

Description

Charging connector structure for charging sealing ring

Technical Field

The utility model belongs to the aerospace field relates to inflatable seal circle, especially relates to inflatable seal circle is with charging connector structure.

Background

The inflatable sealing ring is also called an air bag, the interior of the inflatable sealing ring is hollow, the inflatable sealing ring is provided with at least one inflation (deflation) nozzle, the telescopic part of the sealing ring is hidden in the groove in a natural state, when the sealing ring is inflated through the nozzle, the sealing ring deforms under the action of internal pressure, the middle part expands outwards and is in close contact with the other sealing surface, and therefore the sealing effect is achieved. When the sealing state needs to be relieved, high-pressure gas in the sealing ring is discharged through the air tap, the expansion part automatically retracts into the groove under the elastic action of rubber and is separated from the sealing surface, and the sealing device is mainly used for sealing a gap between a large cabin door and a hatch or opening and closing a pipeline port and a valve frequently.

The common inflatable sealing ring is a rectangular inflatable sealing ring, which is a non-metal sealed annular sealing ring and consists of a metal inflating nozzle and a non-metal rubber strip. The section of the nonmetal rubber strip is rectangular and hollow, the rubber strip can be inflated through the metal inflation nozzle, the sealing ring expands in the rectangular sealing groove and keeps the internal pressure, and the sealing effect can be achieved at the butt joint.

The whole type that is down "T" type of the inside metal charging connector structure of current inflatable seal circle, see the metal charging connector sketch map in figure 1, the metal charging connector is the same with rubber strip inner chamber size at the inside cladding part's of rubber strip size, can closely laminate, the metal charging connector when the inside cladding part of rubber strip combines with the rubber strip, face 3 does not combine with rubber strip internal surface, all the other 3 surfaces will combine with the rubber strip, just so can reach airtight between air cock and the rubber strip, but the problem that this structure exists: because the metal blocks on the surfaces 2 and 4 are combined with the rubber surfaces at the surfaces, the rubber surfaces on the surfaces 2 and 4 cannot be stretched in a sufficient amount when the inflatable sealing ring is inflated and expanded, and only the rubber surface on the surface 3 can be expanded outwards in a sufficient amount, so that the sealing gap at the inflating nozzle is not expanded in a large amount as other places when the inflatable sealing ring is inflated and sealed, air leakage is easy to occur at the sealing gap, when the inflatable sealing ring is inflated and used, the sealing weak point is formed in the area, air leakage is easy to occur, or the sealing can be performed only by needing larger inflation pressure, and the reliability of the sealing ring is reduced by improving the inflation pressure; the sealing requirement can be met only by excessively stretching the adhesive tape relative to other places under the condition of large pressure intensity, but the inflatable sealing ring is easily blown and exploded due to excessively high inflation pressure, so that sealing failure is caused; the too high application scope that also can lead to inflatable seal circle of indirect meeting reduces of pressure, adopts the design that trilateral all combines moreover, makes the combination area increase, leads to difficult atress even when the joint technology afterburning, and the combination quality is extremely unstable, appears the joint not sealed very easily, the phenomenon of inflatable seal circle self gas leakage.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem of providing an inflating nozzle structure for an inflating sealing ring, reducing the tearing force at a joint surface and protecting the air tightness of the joint surface; the longer side of the rectangle is used for increasing the length of the force arm, when the pre-tightening torque is fixed, the force on the structure of the fixing piece can be reduced, and the air tightness of the combined surface is protected.

In order to solve the technical problem, the utility model discloses a technical scheme is: the charging connector structure for the charging sealing ring comprises a charging connector which is in an inverted T shape;

the inflation nozzle comprises an air inlet pipe and a fixing piece, an air inlet channel is arranged in the air inlet pipe, one end of the air inlet channel is communicated with the outside, the other end of the air inlet channel is communicated with the inside of the inflatable sealing ring, the fixing piece is arranged on the outer ring of the lower end of the air inlet pipe, the fixing piece is embedded in the thickness layer of the inflatable sealing ring, and the lower end face of the air inlet pipe is overlapped with the inner wall of the inflatable sealing ring;

the charging connector and the charging sealing ring are combined and fixed into a whole.

Furthermore, the inflating nozzle is a metal inflating nozzle, the air inlet pipe is vertically and centrally arranged on the fixing sheet, and the thickness of the fixing sheet is 0.45-0.55 times of that of the inflating sealing ring.

Further, the intake pipe is hollow cylinder, the stationary blade is the rectangle, and the four corners of stationary blade all is equipped with the transition circular arc to when making stationary blade and sealing washer contact, the fish tail sealing washer not.

Further, the outer diameter of the air inlet pipe is equal to or slightly smaller than the width of the fixing piece.

Furthermore, the fixing piece is used for an inflation sealing ring with a rectangular section, the inflation nozzle is arranged on one surface of the inflation sealing ring, and the width of the fixing piece is equal to the length of the side of the inner diameter of the side where the fixing piece is located after the rectangular inflation sealing ring is inflated.

Furthermore, the rectangular inflatable sealing ring is arranged in the sealing groove, the sealing groove is of a groove-shaped structure with a downward opening, the sealing plate is arranged corresponding to the lower end of the rectangular inflatable sealing ring, a sealing gap is formed between the sealing plate and the lower end face of the sealing groove, and after the rectangular inflatable sealing ring is inflated, the sealing gap between the sealing groove and the sealing plate is filled up to form a sealing state.

Further, the minimum inflation pressure value of the inflation sealing ring is 0.15 Mpa.

Compared with the prior art, the utility model has the advantages and positive effect as follows.

1. The utility model can generate pre-tightening torque during screwing operation when the charging connector is connected with an external pipeline, the shape of the internally coated sheet structure adopts a rectangle rather than a circle, the pre-tightening force is resisted by the extrusion force of the structure edges and corners and the rubber strips, the tearing force at the joint surface can be reduced, and the air tightness of the joint surface is lifted and protected; the longer side of the rectangle is used for increasing the length of the force arm, and when the pre-tightening torque is fixed, the force on the sheet structure can be reduced, so that the air tightness of the joint surface is protected;

2. become inside clad metal block into stationary blade structure, the sheet structure only combines fixedly with one of them face of rubber strip, other 3 faces do not combine, the degree of freedom of 3 faces has been released, all freely expand, the whole cladding of stationary blade of slice T type structure is inside one face of rubber strip, the upper and lower surface that makes the stationary blade all can combine with the rubber strip, area of contact has been increased relatively, and whole stationary blade structure is the plane, no cubical space structure, easy application of force is even, satisfy the even requirement of combination technology application of force.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

FIG. 1 is a schematic view of a conventional structure of a charging connector for a pneumatic sealing ring according to the present invention;

FIG. 2 is a schematic structural view of the air nozzle of the present invention;

FIG. 3 is a perspective view of the inflation nozzle of the present invention;

FIG. 4 is a schematic structural view of the application of the inflation nozzle of the present invention;

FIG. 5 is a schematic cross-sectional view of the use of the inflation nozzle of the present invention;

FIG. 6 is a view showing an application state of the charging connector for the inflatable sealing ring of the present invention;

fig. 7 is a cross-sectional view of the inflatable sealing ring of the present invention without the inflation nozzle;

fig. 8 is a schematic structural view of the inflatable sealing ring of the present invention;

FIG. 9 is a view showing a state that the inflating nozzle for the inflatable gasket of the present invention is laterally clamped under load during the assembling process;

FIG. 10 is a longitudinal force-receiving state diagram of the inflating nozzle for the inflatable gasket of the present invention during the assembling process.

Reference numerals:

1. an air charging nozzle; 11. an air inlet pipe; 12. a fixing sheet; 13. an air intake passage; 14. a transition arc; 2. a rubber strip; 3. A sealing groove; 5. a sealing plate; 6. sealing the gap; 7. a rigid support tool; 71. and (7) lightening holes.

Reference numerals:

1. an air charging nozzle; 11. an air inlet pipe; 12. a fixing sheet; 13. an air intake passage; 14. a transition arc; 2. a rubber strip; 3. a sealing groove; 5. a sealing plate; 6. and sealing the gap.

Detailed Description

It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without being abrupt.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.

As shown in fig. 1-8, the present invention relates to an inflation nozzle structure for an inflation sealing ring, which comprises an inflation nozzle 1 in an inverted T shape; the charging connector 1 comprises an air inlet pipe 11 and a fixing piece 12, wherein an air inlet channel 13 is arranged inside the air inlet pipe 11, one end of the air inlet channel 13 is communicated with the outside, the other end of the air inlet channel 13 is communicated with the inside of an inflatable sealing ring, the fixing piece 12 is arranged on the outer ring of the lower end of the air inlet pipe 11, the fixing piece 12 is embedded in the thickness layer of the inflatable sealing ring, and the lower end face of the air inlet pipe 11 is overlapped with the inner wall of the inflatable sealing ring; the charging connector 1 is combined and fixed with the charging sealing ring into a whole.

Preferably, the charging connector 1 is a metal charging connector, the air inlet pipe 11 is vertically and centrally arranged on the fixing plate 12, the thickness of the fixing plate 12 is 0.45-0.55 times of the thickness of the inflatable sealing ring, the proportion is too large, the fixing plate is not easy to fix, too small, and the strength is not enough.

Preferably, the air inlet pipe 11 is hollow cylindrical, the fixing piece 12 is rectangular, and four corners of the fixing piece 12 are provided with transition arcs 14, so that the sealing ring is not scratched when the fixing piece 12 is in contact with the sealing ring; the outer diameter of the air inlet pipe 11 is equal to or slightly smaller than the width of the fixing piece 12, occupies smaller width and has compact structure.

Preferably, the fixing piece 12 is used for an inflation sealing ring with a rectangular section, the inflation nozzle 1 is arranged on one surface of the inflation sealing ring, and the width of the fixing piece 12 is equal to the length of the inner diameter side of the side where the fixing piece 12 is located after the rectangular inflation sealing ring is inflated.

Preferably, the rectangular inflatable sealing ring is arranged in the sealing groove 3, the sealing groove 3 is of a groove-shaped structure with a downward opening, the sealing plate 5 is arranged corresponding to the lower end of the rectangular inflatable sealing ring, a sealing gap 6 is formed between the sealing plate 5 and the lower end face of the sealing groove 3, and after the rectangular inflatable sealing ring is inflated, the sealing gap 6 between the sealing groove 3 and the sealing plate 5 is filled up to form a sealing state.

Preferably, the minimum inflation pressure value of the inflation sealing ring is 0.15Mpa, the traditional structure needs at least 0.35Mpa to ensure the sealing performance, and the structure needs smaller pressure to achieve and is not easy to leak.

The specific working process is as follows: the inflatable seal ring comprises an inflatable carrier of a metal inflating nozzle and an inflatable seal ring, the inflatable seal ring can be airtight after being combined with the inflatable carrier, and in the application, the inflatable carrier of the inflatable seal ring is supported by a rubber strip to form an annular inflatable space.

The inflatable sealing ring is placed in the rectangular sealing groove, the inflatable sealing ring expands after being inflated inside the inflatable sealing ring, a sealing gap between the sealing ring and the sealing plate can be blocked, the inner space becomes a sealing cavity, and stable pressure difference can be generated inside and outside the sealing cavity.

After the structure is used, the air tightness of the joint surface of the charging connector and the rubber strip is good; after the metal inflating nozzle is placed in the sealing groove, the rubber strip at the position of the inflating nozzle is well expanded after inflation, the sealing of the sealing surface can be realized without the need of inflating larger pressure before, the minimum inflation pressure value for realizing the reliable airtightness of the sealing surface is reduced from 0.35MPa to 0.15MPa, the two problems of poor self airtightness and poor pressure maintaining airtightness caused by the traditional inflating nozzle are solved by the metal inflating nozzle structure, the qualitative leap is realized in the reliability, and the root of the inflating nozzle is free from air leakage in the using process.

The assembling process of the charging connector 1 for the charging seal ring can be applied to the assembling process of the structure of the charging connector 1 for the charging seal ring, and also can be applied to the butt-joint vulcanization process of the rubber strip 2 and the rubber strip 2.

As shown in fig. 9 and 10, the assembling process of the charging nozzle 1 for a pneumatic gasket includes the steps of,

s1, manufacturing the linear rubber strip 2 which is hollow inside and has two unsealed ends, and setting the length according to the requirement;

s2, closing the linear rubber strip 2, and when two ends are closed, placing a rigid support tool at the butted joint, and simultaneously placing the inflating nozzle 1, wherein the rigid support tool is made of a soluble material, is dissolved into liquid through soluble salt or solution, and is discharged from an air inlet channel 13 of the inflating nozzle 1;

s3, fixing and vulcanizing, namely clamping and stressing the rubber strip 2, the built-in rigid support tool and the charging connector 1 for fixing, integrally vulcanizing and bonding the rubber strip 2, the built-in rigid support tool and the charging connector 1, and waiting for curing, wherein in the step, the curing time is 24 hours.

And S4, melting, pouring the solution, and discharging from the air inlet channel 13 after the rigid support tool is melted into liquid.

Moreover, the inner diameter of the section of the rigid support tool is consistent with that of the section of the inflatable sealing ring after inflation, so that the rigid support tool is convenient to support, and lightening holes 71 are formed in the rigid support tool 7, so that the dissolving time is shortened.

The final assembly process of the metal charging nozzle 1 and the nonmetal rubber strip 2 is an important link for ensuring good air tightness of the charging sealing ring. Nonmetal rubber strip 2 cavity, if will make metal air cock and rubber strip 2 adhere to well on the two contact surface, must place the rigidity in 2 inside rubber strips of metal air cock department and support the frock, can exert external force with metal air cock and rubber strip 2 and press from both sides tightly. The size of the clamping force and the clamping time are important factors influencing the excellent adhesive force of the clamping force and the clamping time, and if the clamping force is not enough, the good adhesive force cannot be obtained; if the holding time is too short, good adhesion cannot be obtained. After the clamping time is over, the internal rigid support tool needs to be taken out from the inside, so that the sealing ring recovers flexibility, the metal inflating nozzle 1 and the nonmetal adhesive tape can be firmly attached and do not leak air, the through hole of the inflating nozzle 1 is small, the internal support tool is large, the rigid support tool is dissolved after the fixing, and the solution flows out of the air inlet channel 13, so that the purpose of taking out the rigid support tool is achieved, in the process, the rigid support tool needs to well meet the requirement of large clamping force, and the rigid support tool can be cracked due to overlarge clamping force, so that the product is scrapped; the adhesion force at the contact interface of the metal charging nozzle 1 and the rubber strip 2 is not up to standard when the clamping force is too small, so that the air leakage at the contact interface of the metal charging nozzle and the rubber strip is caused, and the product is scrapped, so that the adjustment of the clamping force at each time is particularly time-consuming, and the clamping force cannot be increased to the optimal value at each time, so that the yield is too low.

The rigid supporting tool is made of a high-strength magnesium alloy material, has high metal strength, can be changed into powder in a solution and flows out of the air inlet channel 13 along with the solution, and the strength of the high-strength magnesium alloy material is far higher than that of solid soluble salt and far exceeds the strength value required by the optimal clamping force, so that the high-strength magnesium alloy material can be machined and accurately machined to a reasonable shape; when the solution is met, the powder can be quickly dissolved into powder and is discharged back from the gas-filled hole along with the solution. The problem that the strength of the supporting tool is low is perfectly solved.

The assembling process is different from the assembling process of the inflating nozzle 1 for the inflating sealing ring, wherein in the step S1, an inflating and exhausting hole is reserved, in the step S2, the tool is only supported rigidly, the inflating nozzle 1 is not arranged, and in the step S4, the melted liquid is exhausted from the reserved inflating and exhausting hole, so that the application range of the process is further expanded, and the assembling process is two different applications of the tool.

While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention, and should not be considered as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.

Claims (7)

1. Inflation nozzle structure for inflatable seal circle, its characterized in that: comprises an inflating nozzle which is in an inverted T shape;

the inflation nozzle comprises an air inlet pipe and a fixing piece, an air inlet channel is arranged in the air inlet pipe, one end of the air inlet channel is communicated with the outside, the other end of the air inlet channel is communicated with the inside of the inflatable sealing ring, the fixing piece is arranged on the outer ring of the lower end of the air inlet pipe, the fixing piece is embedded in the thickness layer of the inflatable sealing ring, and the lower end face of the air inlet pipe is overlapped with the inner wall of the inflatable sealing ring;

the charging connector and the charging sealing ring are combined and fixed into a whole.

2. The charging connector structure for a charging gasket according to claim 1, wherein: the inflating nozzle is a metal inflating nozzle, the air inlet pipe is vertically and centrally arranged on the fixing sheet, and the thickness of the fixing sheet is 0.45-0.55 times of that of the inflating sealing ring.

3. The charging connector structure for a charging gasket according to claim 1, wherein: the intake pipe is hollow cylinder shape, the stationary blade is the rectangle, and the four corners of stationary blade all is equipped with the transition circular arc to when making stationary blade and sealing washer contact, not fish tail sealing washer.

4. The charging connector structure for a charging gasket according to claim 3, wherein: the outer diameter of the air inlet pipe is equal to or slightly smaller than the width of the fixing piece.

5. The structure of an air nozzle for an air-packing ring according to any one of claims 1 to 4, wherein: the inflatable sealing ring is used on the inflatable sealing ring with the rectangular section, the inflating nozzle is arranged on one surface of the inflatable sealing ring, and the width of the fixing piece is equal to the length of the inner diameter side of the side where the fixing piece is located after the rectangular inflatable sealing ring is inflated.

6. The charging connector structure for a charging gasket according to claim 5, wherein: the rectangular inflatable sealing ring is arranged in the sealing groove, the sealing groove is of a groove-shaped structure with a downward opening, the sealing plate is arranged corresponding to the lower end of the rectangular inflatable sealing ring, a sealing gap is formed between the sealing plate and the lower end face of the sealing groove, and after the rectangular inflatable sealing ring is inflated, the sealing gap between the sealing groove and the sealing plate is filled up to form a sealing state.

7. The charging connector structure for a charging gasket according to claim 5, wherein: the minimum inflation pressure value of the inflation sealing ring is 0.15 Mpa.

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