A fuel filler neck gasket

Abstract

The utility model discloses an oil filler connector sealing gasket, including casing, big sealing ring, small sealing ring, the casing is flange metal sheet, and the flange and the connection pipeline and the oil filler connector of gauge size are adapted, the flange hole outer side positive and negative two sides corresponding position is respectively set up and has the vulcanization sealing ring groove no. 1 of dovetail shape, the groove has the through -hole no. 1 in all along the circumferential even, the casing outside circumferential even distribution six balance holes, the balance hole outer side positive and negative two sides corresponding position is respectively set up and has the sealing ring groove no. 2 of dovetail shape, the sealing ring groove no. 2 in the dovetail shape has even set up a plurality of through -hole no. 2 along the circumferential, and carries out sandblasting treatment, can effectively prevent the vulcanization rubber and fall off. The vulcanization groove selects the dovetail groove, makes vulcanization rubber ring not easy to separate, the selection of sealing ring ring vulcanization material quality, specifically selects GF008 rubber material quality, and has the sealing property and the compression deformation resistance, the casing vulcanization groove even hole, intercommunication two sides sealing ring groove, vulcanization can make two sides vulcanization rubber ring intercommunication, improves the vulcanization intensity, makes rubber ring not easy to fall off.

Description

Technical Field

[0001] This utility model belongs to the technical field of civil aircraft fuel system, specifically relating to a refueling connector sealing gasket. Background Technology

[0002] Aircraft have a long storage period, some even exceeding 15 years. Therefore, the stability requirements for refueling connector gaskets are high. However, traditional refueling connector gaskets used for sealing are usually made of pure rubber. After long-term use, they often undergo severe deformation, which accelerates rubber aging and prevents them from performing their sealing function properly, thus reducing the safety and reliability of the aircraft fuel system. Summary of the Invention

[0003] This utility model provides a sealing gasket for an oil filling connector, including a shell, a large sealing ring, and a small sealing ring. The shell is a flange-shaped thin metal plate, and the flange and its diameter are adapted to the connecting pipe and the oil filling connector. Dovetail-shaped vulcanized sealing ring grooves are respectively opened at corresponding positions on the front and back sides of the outer edge of the flange hole. Through holes are opened in the grooves along the circumference. Six balance holes are evenly distributed on the outer circumference of the shell. Dovetail-shaped sealing ring grooves are respectively opened at corresponding positions on the front and back sides of the outer edge of the balance holes. Several through holes are evenly opened in the dovetail-shaped sealing ring grooves along the circumference. The grooves are sandblasted to effectively prevent the vulcanized rubber from falling off.

[0004] The large sealing ring is located in the dovetail-shaped vulcanized sealing ring groove on the outer edge of the flange hole. It is bonded to the vulcanized sealing ring groove on the shell through a rubber vulcanization process. There is one on each side to prevent fuel from overflowing in the channel. The two large sealing rings are connected by a through hole on the metal shell. The thickness of the large sealing ring is greater than the depth of the dovetail-shaped sealing ring groove.

[0005] The small sealing rings are located in the dovetail-shaped sealing ring grooves on the outer circumference of the outer side of the shell, where six balance holes are evenly distributed. They are bonded to the shell vulcanized sealing ring grooves by a rubber vulcanization process, with six on each side. They are used to balance the force on the large sealing ring during installation and connection, and to assist in sealing. The small sealing rings at corresponding positions on both sides are connected by through holes on the metal shell. The thickness of the small sealing rings is greater than the depth of the dovetail-shaped sealing ring grooves.

[0006] The vulcanizing tank uses a dovetail groove to prevent the vulcanized rubber ring from detaching. The vulcanizing material for the sealing ring is GF008 rubber, which combines sealing and resistance to pressure deformation. The shell vulcanizing tank has evenly spaced holes that connect the sealing ring grooves on both sides. During vulcanization, the vulcanized rubber rings on both sides can be connected, which improves the vulcanization strength and makes the rubber ring less likely to fall off.

[0007] The beneficial effects of this utility model are: 1. Dovetail-shaped vulcanized sealing ring grooves are respectively opened at corresponding positions on the front and back sides of the housing parts. Through holes are opened in the grooves along the circumference and sandblasting treatment is performed to effectively prevent the vulcanized rubber from falling off and improve the reliability of the oil filler joint sealing gasket.

[0008] 2. The sealing ring is made of GF008 rubber, which not only has a Shore A hardness of 70±5, but also has good resistance to air and fuel vapor, and is not easily corroded or deformed, thus effectively ensuring the sealing performance of the refueling connector gasket.

[0009] 3. A small vulcanized sealing ring is installed along the outer edge of the flange hole to balance the force on the large sealing ring during installation and to assist in sealing. This improves the reliability and stability of the oil filler joint gasket. Attached Figure Description

[0010] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments conforming to the present invention and, together with the description, serve to explain the principles of the present invention. It is obvious that the drawings described below are merely some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0011] Figure 1 A schematic diagram of the structure of the sealing gasket for the refueling connector provided by this utility model; Figure 2 for Figure 1 Partial cross-sectional view of AA in the middle; Figure 3 A schematic diagram of the shell structure provided for this utility model; Figure 4 for Figure 3 Cross-sectional view of the middle section (BB); Figure 5 for Figure 4 Enlarged view of part C in the middle; Shell, 101-flange hole, 102-dovetail seal groove one, 103-through hole one, 104-balance hole, 105-dovetail seal groove two, 106-through hole two, Large sealing ring, 3 small sealing rings. Detailed Implementation

[0012] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make the present invention more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.

[0013] Please see Figure 1-5The figure shows a schematic diagram of the sealing gasket structure of the refueling connector provided by this utility model, including a shell 1, a large sealing ring 2, and a small sealing ring 3. The shell 1 is a flange-shaped thin metal plate, including a flange hole 101, the diameter of which matches the connecting pipe. Dovetail-shaped sealing ring grooves 102 are respectively opened at corresponding positions on the front and back sides of the outer edge of the flange hole 101. Several through holes 103 are evenly opened circumferentially inside the dovetail-shaped sealing ring grooves 102. Six balance holes 104 are evenly distributed on the outer circumference of the shell 1. Dovetail-shaped sealing ring grooves 105 are respectively opened at corresponding positions on the front and back sides of the outer edge of the balance holes 104. Several through holes 106 are evenly opened circumferentially inside the dovetail-shaped sealing ring grooves 105. The large sealing ring 2 is sealed and fitted with the dovetail-shaped sealing ring grooves 102, and the small sealing ring 3 is sealed and fitted with the dovetail-shaped sealing ring grooves 105. The materials of the large sealing ring 2 and the small sealing ring 3 are both made of GF008 rubber. The shell 1 and the large sealing ring 2 and the small sealing ring 3 are vulcanized together. The thickness of the large sealing ring 2 is greater than the depth of the dovetail-shaped sealing ring groove 102, and the thickness of the small sealing ring 3 is greater than the depth of the dovetail-shaped sealing ring groove 105. There are six through holes 103 and three through holes 106 in each of the dovetail-shaped sealing ring grooves 105.

[0014] The large sealing ring 2 is bonded to the dovetail-shaped sealing ring groove 102 of the housing through a rubber vulcanization process, with one on each side, to prevent fuel from overflowing in the channel. The two large sealing rings 2 are connected by a through hole 103 on the metal housing. The thickness of the large sealing ring 2 is greater than the depth of the dovetail-shaped sealing ring groove 102.

[0015] The small sealing rings 3 are bonded to the dovetail-shaped sealing ring groove 105 of the shell by a rubber vulcanization process. There are six on each side. They are used to balance the force on the large sealing ring 2 during installation and connection, and to assist in sealing. The small sealing rings 3 at corresponding positions on both sides are connected by through holes 106 opened on the metal shell. The thickness of the small sealing rings 3 is greater than the depth of the dovetail-shaped sealing ring groove 105.

[0016] The vulcanizing tank uses a dovetail groove to prevent the vulcanized rubber ring from detaching. The vulcanizing material for the sealing ring is GF008 rubber, which combines sealing and resistance to pressure deformation. The shell vulcanizing tank has evenly spaced holes that connect the sealing ring grooves on both sides. During vulcanization, the vulcanized rubber rings on both sides can be connected, which improves the vulcanization strength and makes the rubber ring less likely to fall off.

[0017] The above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Any modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, are all covered within the scope of the claims of this utility model.

Claims

1. A sealing gasket for an oil filler connector, characterized in that: The shell (1) includes a housing (1), a large sealing ring (2), and a small sealing ring (3). The housing (1) is a flange-shaped thin metal plate, including a flange hole (101) whose diameter matches the connecting pipe. A dovetail-shaped sealing ring groove (102) is opened at corresponding positions on the front and back sides of the outer edge of the flange hole (101). Several through holes (103) are evenly opened circumferentially along the inner edge of the dovetail-shaped sealing ring groove (102). Six balance holes (104) are evenly distributed on the outer circumference of the housing (1). The balance holes (104) are located outside the outer edge of the housing (1). Dovetail-shaped sealing ring grooves (105) are provided at corresponding positions on both sides. Several through holes (106) are evenly provided in the dovetail-shaped sealing ring grooves (105) along the circumferential direction. The large sealing ring (2) is sealed with the dovetail-shaped sealing ring groove (102), and the small sealing ring (3) is sealed with the dovetail-shaped sealing ring groove (105). The materials of the large sealing ring (2) and the small sealing ring (3) are both vulcanized rubber. The shell (1) is vulcanized together with the large sealing ring (2) and the small sealing ring (3).

2. The sealing gasket for the oil filler connector according to claim 1, characterized in that: The thickness of the large sealing ring (2) is greater than the depth of the first dovetail sealing ring groove (102), and the thickness of the small sealing ring (3) is greater than the depth of the second dovetail sealing ring groove (105).

3. The sealing gasket for the oil filling connector according to claim 1, characterized in that: The large sealing ring (2) and the small sealing ring (3) are made of GF008 rubber.

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