CN114523698A - Sealing connection method and sealing connection device - Google Patents
Sealing connection method and sealing connection device Download PDFInfo
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- CN114523698A CN114523698A CN202210049001.XA CN202210049001A CN114523698A CN 114523698 A CN114523698 A CN 114523698A CN 202210049001 A CN202210049001 A CN 202210049001A CN 114523698 A CN114523698 A CN 114523698A
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- Prior art keywords
- pipe
- sealing
- elastic rubber
- rubber bag
- vent pipe
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- 238000007789 sealing Methods 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims abstract description 28
- 230000008602 contraction Effects 0.000 claims abstract description 16
- 230000006835 compression Effects 0.000 claims abstract description 8
- 238000007906 compression Methods 0.000 claims abstract description 8
- 230000000694 effects Effects 0.000 claims abstract description 3
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 24
- 239000004917 carbon fiber Substances 0.000 claims description 24
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 24
- 239000011347 resin Substances 0.000 claims description 24
- 229920005989 resin Polymers 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 16
- 239000004744 fabric Substances 0.000 claims description 12
- 239000003292 glue Substances 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 6
- 238000004026 adhesive bonding Methods 0.000 claims description 5
- 239000012945 sealing adhesive Substances 0.000 claims description 5
- 210000001503 joint Anatomy 0.000 claims description 2
- 239000002131 composite material Substances 0.000 abstract description 12
- 239000007769 metal material Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 8
- 238000003825 pressing Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/681—Component parts, details or accessories; Auxiliary operations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/84—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks by moulding material on preformed parts to be joined
- B29C70/845—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks by moulding material on preformed parts to be joined by moulding material on a relative small portion of the preformed parts
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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
- F16J15/14—Sealings between relatively-stationary surfaces by means of granular or plastic material, or fluid
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Gasket Seals (AREA)
Abstract
The invention belongs to the technical field of connecting components, and discloses a sealing connecting method and a sealing connecting device, which comprise an elastic rubber bag, a pressure ring, a spiral disc and a vent pipe; the right end of the vent pipe is provided with an annular flange, the contraction port of the elastic rubber bag is sleeved at the annular flange of the vent pipe, and the compression ring is sleeved on the outer side of the vent pipe and extruded on the outer side of the contraction port; the spiral shell dish is sealed and the activity suit is in the outside of breather pipe, the spiral shell dish is located the clamping ring left side. The invention adopts a simple tool to seal the connecting area which is difficult to seal between the parts, most parts of the tool can be reused, and the cost is reduced. The sealing connection method and the sealing connection device are suitable for the condition that the connecting piece is a pipe, the pipe is made of composite materials or metal materials, the inner cavity of the pipe can be temporarily sealed, and the connected piece is cured and connected by combining a vacuum flow guide forming process, so that the sealing connection method and the sealing connection device are simple in structure and convenient and quick to operate.
Description
Technical Field
The invention belongs to the technical field of connecting components, and particularly relates to a sealing connecting method and a sealing connecting device.
Background
At present, when different parts are connected, the following method is generally adopted:
and (3) cementing: the equipment is combined by adopting the adhesive, and the main defects are that the glue is easy to age and obvious in heat influence by humidity.
Mechanically connecting: the riveting or the screw joint is adopted, the main defects are that the stress is too concentrated, the composite material basically cannot generate plastic deformation, and the required tolerance matching precision is high.
The integrated forming composite material process comprises the following steps: high die costs are often required.
In addition, under the conditions that the requirement on connection strength is high or gluing and mechanical connection are not easy to occur, the connecting piece can be made of the composite material to cure the connected piece, the application of the composite material is more and more extensive at present, the composite material has the advantage of one-step forming, and the connection between the composite materials or between the composite material and other materials has great limitation.
When the connecting piece is made of composite materials and cured and connected, the connecting part needs to be sealed. When the sealed size of the connected piece is larger, a conventional plastic plug can be adopted, but the sealing performance is not high, and the overall sealing performance of the connected piece is easily influenced.
Through the above analysis, the problems and defects of the prior art are as follows: the existing connection mode of different parts has poor firmness, high required precision, high cost and poor sealing performance.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a sealing connection method and a sealing connection device.
The invention is realized in such a way that a sealing connection method comprises the following steps:
the method comprises the following steps that firstly, a taper pipe and a hole of a plate are in butt joint to be orderly, the taper pipe is pre-positioned on the plate, the long end of the taper pipe is positioned inside equipment, and the short end of the taper pipe is exposed out of the equipment;
inserting a sealing connecting device from the short-end opening of the taper pipe, and hermetically connecting a screw disc of the sealing connecting device with the inner wall of the pipe;
inflating air from the other end of the vent pipe to expand the elastic rubber bag, attaching the expanded elastic rubber bag to the inner wall of the pipe to form a seal, closing a sealing ball valve in the vent pipe, and stopping inflating;
fourthly, laying carbon fiber cloth between the outer wall of the short end of the taper pipe and the plate to form a carbon fiber laying layer, covering a vacuum bag outside the carbon fiber laying layer, sealing the periphery of the vacuum bag by using a sealing adhesive tape, reserving air suction holes at the edge of the vacuum bag for vacuumizing and discharging air in the vacuum bag, and tightly attaching the vacuum bag to the outer side of the carbon fiber laying layer after vacuumizing is completed;
introducing resin through the air exhaust holes, wherein the using amount of the resin depends on the size of the vacuum bag and the number of layers of the carbon fiber cloth, and the more the number of layers is, the more the resin is used; exhausting air in the resin through the air exhaust hole, leading out redundant resin, and waiting for the resin to be cured at normal temperature;
sixthly, after the conical pipe and the plate are cured and connected, removing the auxiliary material and tearing off the vacuum bag;
opening the ball valve, discharging the air in the elastic rubber bag, and releasing the air in the elastic rubber bag to restore the original shape or reduce the internal pressure; and (3) dismantling the jackscrew, taking out the screw disc and the vent pipe connected with the screw disc, dismantling the screw disc from the vent pipe in a rotating manner, loosening the compression ring, removing the contraction port of the elastic rubber bag, and completing the dismantling of the sealing connection device.
Further, in the first step, the taper pipe and the plate are pre-positioned by adopting viscose or fixed by adopting other tools,
further, in the first step, a taper pipe with a corresponding cross section shape is arranged according to the shape of the hole.
Further, in the second step, the screw disc and the pipe are fixed in a jackscrew or interference fit or gluing mode.
Furthermore, in the third step, the sealing glue is smeared on the outer side of the elastic rubber bag, and the elastic rubber bag can be quickly bonded with the inner wall of the pipe to form more reliable sealing.
Another object of the present invention is to provide a sealing connection device, comprising:
the elastic rubber bag, the pressure ring, the spiral disc and the vent pipe;
the contraction port of the elastic rubber bag is sleeved at the right end of the vent pipe, and the compression ring is sleeved on the outer side of the vent pipe and extruded on the outer side of the contraction port;
the spiral shell dish is sealed and the activity suit is in the outside of breather pipe, the spiral shell dish is located the clamping ring left side.
Furthermore, the right end of the vent pipe is provided with an annular flange, and the contraction port of the elastic rubber bag is sleeved at the annular flange of the vent pipe.
Further, a sealing ball valve is arranged on the inner side of the vent pipe, and the sealing ball valve is a two-way valve.
Further, the spiral plate is connected with the outer side of the vent pipe in a threaded fit mode.
Further, the elastic rubber bag and the spiral disk are provided with pipes, the pipes are of a taper pipe structure, the outer edge of the spiral disk is connected with the inner wall of the pipe in a sealing mode, and the elastic rubber bag is located on the inner side of the pipe.
Furthermore, the spiral disc and the pipe are fixed in a jackscrew or interference fit or gluing mode.
By combining all the technical schemes, the invention has the advantages and positive effects that: the invention adopts a simple tool to seal the connecting area which is difficult to seal between the parts, most parts of the tool can be reused, and the cost is reduced.
The sealing connection device is suitable for the condition that the connecting piece is a pipe, the pipe is made of composite materials or metal materials, an inner cavity of the pipe can be temporarily sealed, and the connected piece is cured and connected by combining a vacuum flow guide forming process, so that the sealing connection device is simple in structure and convenient and quick to operate.
When the size or the volume of a connected piece (such as equipment to be sealed) is large, the connected piece is inconvenient to enter the equipment to glue the exposed hole of the connected piece, or the hole has a small caliber, and the sealing piece is inconvenient to fix by riveting or screwing. Simple structure connects reliably, has reduced the construction degree of difficulty, has improved efficiency.
When the holes on the plate are more, the taper pipes are adopted to adapt to the holes, the taper pipes can be suitable for the holes in a certain diameter range on the plate, the pipes with the same diameter do not need to be machined for the holes, the universality of the pipes is improved, the types of sealing elements are reduced, and the efficiency is improved.
The sealing connecting device has the advantages of simple structure, simple installation and disassembly processes, no damage to most parts (such as the vent pipe and the pressure ring) in the operation process, repeated use and cost saving.
And (4) curing and connecting the composite material, and curing the connecting piece and the connected piece together. Compared with the conventional integrated molding composite material process, the cost is reduced. The sealing connection method of the invention can be suitable for the connection between the parts which are difficult to seal, has simple structure, does not need to manufacture a sealing element with a specific shape, and avoids the generation of die cost.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained from the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a sealing connection device according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a ventilation pipe provided in the embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a sealed ball valve according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a pipe provided in an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a plate provided in an embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a sealing interface according to an embodiment of the present invention.
Fig. 7 is a schematic structural diagram of the sealing connection device provided by the embodiment of the invention in cooperation with a pipe.
Fig. 8 is a schematic structural diagram of a carbon fiber cloth layer and a vacuum bag provided in an embodiment of the present invention.
In the figure: 1. an elastic rubber bag; 2. pressing a ring; 3. a spiral disc; 4. a breather pipe; 5. an annular flange; 6. sealing the ball valve; 7. a pipe; 8. a plate material; 9. a short end; 10. a long end; 11. sealing the interface; 12. a carbon fiber cloth layer; 13. and (4) vacuum bag.
Fig. 9 is a flowchart of a sealing connection method according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In view of the problems in the prior art, the present invention provides a sealing connection method and a sealing connection device, and the following describes the present invention in detail with reference to the accompanying drawings.
As shown in fig. 1 to 3, the sealing connection device provided by the embodiment of the present invention includes an elastic rubber bag 1, a pressing ring 2, a spiral disk 3, and a vent pipe 4.
The contraction port of the elastic rubber bag 1 is sleeved at the right end of the vent pipe 4, and the compression ring 2 is sleeved at the outer side of the vent pipe 4 and extruded at the outer side of the contraction port; the spiral disc 3 is sealed and movably sleeved on the outer side of the vent pipe 4, and the spiral disc 3 is positioned on the left side of the pressure ring 2. In the embodiment of the invention, the right end of the vent pipe 4 is provided with an annular flange 5, and the contraction port of the elastic rubber bag 1 is sleeved at the annular flange 5 of the vent pipe. The other end of the vent pipe is used for ventilating the elastic rubber bag, so that enough gas is accumulated in the elastic rubber bag to expand and deform.
The peripheral profile of the spiral disk can be designed adaptively according to the shape and size of the inner cavity of the connecting piece (namely, the pipe), and the spiral disk is used for supporting the vent pipe and limiting the vent pipe in the inner cavity of the pipe.
The spiral plate can be made of high-strength and durable materials, is not easy to damage, has long service life, can be repeatedly used and saves cost. The spiral disk can be made of ABS plastic, PC plastic, nylon or other low-cost materials which are easy to form, even wooden products or foaming materials can be adopted, and after the support is completed, if the spiral disk is damaged when the spiral disk is detached, a new spiral disk can be replaced when the spiral disk is used again.
An internal thread is arranged in the central hole of the screw disk. Correspondingly, the outer wall of the vent pipe is provided with an external thread matched with the internal thread. The screw disk is close to the pressing ring through screw rotation, and pushes the pressing ring to move towards the annular flange until a contraction opening between the pressing ring and the annular flange is pressed on the annular flange.
The other end of the vent pipe 4 (the opposite end of the annular flange) is provided with a sealing ball valve which is a two-way valve, and the ventilation and the air leakage can be realized through an elastic rubber bag of the ball valve. The vent pipe is made of high-strength steel or other high-strength materials. The pressure ring is made of ABS plastic, rubber or other low-hardness materials.
The spiral disc 3 in the embodiment of the invention is connected with the outer side of the vent pipe 4 in a threaded fit manner.
In the embodiment of the invention, the outer sides of the elastic rubber bag 1 and the spiral disk 3 are provided with the pipe 7, the pipe 7 is in a conical pipe structure, the outer edge of the spiral disk 3 is hermetically connected with the inner wall of the pipe 7, and the elastic rubber bag 1 is positioned on the inner side of the pipe.
The spiral disc 3 and the pipe 7 in the embodiment of the invention are fixed in a jackscrew or interference fit or cementing mode.
In the embodiment of the invention, a carbon fiber cloth 12 is laid between the outer wall of the short end of the tube 7 and the plate 8, and a vacuum bag 13 covers the outer side of the carbon fiber cloth 12.
The periphery of the vacuum bag 13 in the embodiment of the invention is sealed by using a sealing adhesive tape, and the edge of the vacuum bag is provided with an air exhaust hole.
In this embodiment, as shown in fig. 5, the area of the hole on the device connected to the pipe is a plate (usually a partial outer surface of a large device). As shown in fig. 4, the tubing is a cone. When the holes on the plate are more, the taper pipe can be suitable for the holes in a certain diameter range on the plate, and the pipe with the same diameter does not need to be processed for each hole.
The sealing connecting device is suitable for the condition that a pipe is used as a connecting piece to be fixed in a hole of a connected piece, when the size or the volume of the connected piece, namely equipment, is larger, the connected piece is inconvenient to enter the equipment for gluing operation, or the caliber of the hole is smaller, and the sealing piece is inconvenient to fix in a riveting or screwing mode, the sealing connecting device is used for completing curing connection.
As shown in fig. 9, the sealing connection method according to the embodiment of the present invention includes:
s101, butting the taper pipe and the hole of the plate in order to enable the taper pipe to be pre-positioned on the plate, wherein the long end of the taper pipe is positioned inside the equipment, and the short end of the taper pipe is exposed out of the equipment;
s102, inserting a sealing connecting device from an opening at the short end of the taper pipe, and sealing a spiral disc of the sealing connecting device with the inner wall of the pipe;
s103, inflating air from the other end of the vent pipe to expand the elastic rubber bag, attaching the expanded elastic rubber bag to the inner wall of the pipe to form a seal, closing a sealing ball valve in the vent pipe, and stopping inflating;
s104, laying carbon fiber cloth between the outer wall of the short end of the taper pipe and the plate to form a carbon fiber laying layer, covering a vacuum bag outside the carbon fiber laying layer, sealing the periphery of the vacuum bag by using a sealing adhesive tape, reserving air suction holes at the edge of the vacuum bag for vacuumizing and discharging air in the vacuum bag, and tightly attaching the vacuum bag to the outer side of the carbon fiber laying layer after vacuumizing is completed;
s105, introducing resin through the air suction holes, wherein the using amount of the resin depends on the size of the vacuum bag and the number of layers of the carbon fiber cloth, and the more the number of layers is, the more the resin is used; exhausting air in the resin through the air exhaust hole, leading out redundant resin, and waiting for the resin to be cured at normal temperature;
s106, after the conical pipe and the plate are cured and connected, removing the auxiliary material and tearing off the vacuum bag;
s107, opening the ball valve, discharging the air in the elastic rubber bag, and enabling the elastic rubber bag to leak air to recover the original shape or reduce the internal pressure; and (3) dismantling the jackscrew, taking out the screw disc and the vent pipe connected with the screw disc, dismantling the screw disc from the vent pipe in a rotating manner, loosening the compression ring, removing the contraction port of the elastic rubber bag, and completing the dismantling of the sealing connection device.
The invention is further described with reference to specific examples.
The sealing connecting device for connecting the pipe serving as a sealing element into the hole of the connected piece (the plate of large equipment) comprises the following steps:
step S10: as shown in fig. 6, the holes of the tapered pipe and the plate are butted in order, so that the tapered pipe is pre-positioned on the plate. The long end is located inside the device and the short end is exposed outside the device.
In this embodiment, the holes on the device are circular, the holes may also be square or other shapes, and taper pipes with corresponding cross-sectional shapes are arranged according to the shapes of the holes.
Step S20: the sealing connecting device is inserted from the short end opening of the taper pipe, the screw disc is fixed by adopting jackscrews (sealant can be coated on the jackscrews), and the screw disc can also be fixed by adopting an interference fit mode or a cementing mode of the screw disc and the inner wall of the pipe.
Step S30: as shown in fig. 7, the other end of the air tube is inflated to expand the elastic rubber bag (balloon), and the expanded elastic rubber bag is attached to the inner wall of the tube to form a seal. And closing the sealing ball valve in the vent pipe and stopping inflating. When the sealing rubber bag is used, sealing glue can be smeared on the outer side of the elastic rubber bag, and the elastic rubber bag can be quickly bonded with the inner wall of the pipe to form more reliable sealing.
Step S40: as shown in fig. 8, carbon fiber cloth is laid between the outer wall of the short end of the taper pipe and the plate to form a carbon fiber laying layer, a vacuum bag (thin film material) is covered outside the carbon fiber laying layer, the periphery of the vacuum bag is sealed by a sealing adhesive tape (double-sided adhesive tape with strong viscosity), an air suction hole is reserved at the edge of the vacuum bag for evacuating air in the vacuum bag, and the vacuum bag is tightly attached to the outer side of the carbon fiber laying layer after evacuation is completed. A quality vacuum bagging film is not only strong (not easily punctured) but also has adequate stretch to allow deformation and complete adhesion to the surface being covered.
Step S50: the resin is introduced through the suction holes, and the amount of resin depends on the size of the vacuum bag and the number of layers of the carbon fiber cloth, and generally, the more the number of layers, the more the resin is used. And exhausting air in the resin through the air exhaust hole, guiding out redundant resin, and waiting for the resin to be cured at normal temperature.
Step S60: and after the conical pipe and the plate are cured and connected, removing the auxiliary material and tearing off the vacuum bag.
Step S70: and opening the ball valve to discharge the air in the elastic rubber bag, and the elastic rubber bag is deflated to restore the original shape or reduce the internal pressure. Demolish the jackscrew, take out the helicoidal disc and the breather pipe of last connection, take out the in-process if the adhesion takes place with tubular product inside elastic rubber bag, probably can make elastic rubber bag take place to damage, removable elastic rubber bag when using next time. And rotationally detaching the spiral disc from the vent pipe, loosening the compression ring, removing the contraction port of the elastic rubber bag, and completing the detachment of the sealing connection device.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The above description is only for the purpose of illustrating the present invention and the appended claims are not to be construed as limiting the scope of the invention, which is intended to cover all modifications, equivalents and improvements that are within the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A method of sealing a connection, comprising:
the method comprises the following steps that firstly, a taper pipe and a hole of a plate are in butt joint to be orderly, the taper pipe is pre-positioned on the plate, the long end of the taper pipe is positioned inside equipment, and the short end of the taper pipe is exposed out of the equipment;
inserting a sealing connecting device from the short-end opening of the taper pipe, and hermetically connecting a screw disc of the sealing connecting device with the inner wall of the pipe;
inflating air from the other end of the vent pipe to expand the elastic rubber bag, attaching the expanded elastic rubber bag to the inner wall of the pipe to form a seal, closing a sealing ball valve in the vent pipe, and stopping inflating;
fourthly, laying carbon fiber cloth between the outer wall of the short end of the taper pipe and the plate to form a carbon fiber laying layer, covering a vacuum bag outside the carbon fiber laying layer, sealing the periphery of the vacuum bag by using a sealing adhesive tape, reserving air suction holes at the edge of the vacuum bag for vacuumizing and discharging air in the vacuum bag, and tightly attaching the vacuum bag to the outer side of the carbon fiber laying layer after vacuumizing is completed;
introducing resin through the air exhaust holes, wherein the using amount of the resin depends on the size of the vacuum bag and the number of layers of the carbon fiber cloth, and the more the number of layers is, the more the resin is used; exhausting air in the resin through the air exhaust hole, leading out redundant resin, and waiting for the resin to be cured at normal temperature;
sixthly, after the conical pipe and the plate are cured and connected, removing the auxiliary material and tearing off the vacuum bag;
opening the ball valve, discharging the air in the elastic rubber bag, and releasing the air in the elastic rubber bag to restore the original shape or reduce the internal pressure; and (3) dismantling the jackscrew, taking out the screw disc and the vent pipe connected with the screw disc, dismantling the screw disc from the vent pipe in a rotating manner, loosening the compression ring, removing the contraction port of the elastic rubber bag, and completing the dismantling of the sealing connection device.
2. The sealing connection method according to claim 1, wherein in the first step, the taper pipe and the plate are pre-positioned by using glue or fixed by using other tools.
3. The sealing and connecting method as claimed in claim 1, wherein in the first step, the taper pipe having a corresponding cross-sectional shape is provided according to the shape of the hole.
4. The method of claim 1, wherein in step two, the screw disk and the pipe are fixed by adopting a jackscrew or an interference fit or a glue.
5. The method of claim 1, wherein in step three, the sealing glue is applied to the outside of the elastic rubber bag, and the elastic rubber bag can be rapidly bonded with the inner wall of the tube to form a more reliable seal.
6. A sealing connection device for use in the sealing connection method according to any one of claims 1 to 5, wherein the sealing connection device comprises an elastic rubber bag, a press ring, a screw disk and a breather pipe;
the contraction port of the elastic rubber bag is sleeved at the right end of the vent pipe, and the compression ring is sleeved on the outer side of the vent pipe and extruded on the outer side of the contraction port;
the spiral shell dish is sealed and the activity suit is in the outside of breather pipe, the spiral shell dish is located the clamping ring left side.
7. The sealing joint as claimed in claim 6, wherein the right end of the vent pipe is provided with an annular flange, and the contraction port of the elastic rubber bag is sleeved on the annular flange of the vent pipe.
8. The sealing joint as claimed in claim 6, wherein a sealing ball valve is provided inside the breather pipe, and the sealing ball valve is a two-way valve.
9. The sealing and connecting device as claimed in claim 1, wherein the screw disc is connected with the outer side of the vent pipe through screw thread fit, and the screw disc and the pipe are fixed in a jackscrew or interference fit or gluing mode.
10. The sealing and connecting device as claimed in claim 1, wherein the elastic rubber bag and the outer side of the spiral disk are provided with a pipe material, the pipe material is in a conical pipe structure, the outer edge of the spiral disk is in sealing connection with the inner wall of the pipe material, and the elastic rubber bag is positioned on the inner side of the pipe material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210049001.XA CN114523698A (en) | 2022-01-17 | 2022-01-17 | Sealing connection method and sealing connection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210049001.XA CN114523698A (en) | 2022-01-17 | 2022-01-17 | Sealing connection method and sealing connection device |
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| CN114523698A true CN114523698A (en) | 2022-05-24 |
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| CN202210049001.XA Pending CN114523698A (en) | 2022-01-17 | 2022-01-17 | Sealing connection method and sealing connection device |
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| US6315331B1 (en) * | 1998-03-13 | 2001-11-13 | The Gates Corporation | Molded hose joint assembly |
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