Aviation accessory air tightness test connecting device

Abstract

The utility model discloses an aviation accessory air tightness test connecting device which comprises a shunting device and a guide rail, ten first air source connectors are symmetrically installed on the two sides of the shunting device, an electric control one-way stop valve is installed on each first air source connector, a second air source connector is installed at one end of the shunting device, and a sliding groove is formed in the guide rail. A connector assembly is installed on the sliding groove and fixed to the guide rail through a back tightening nut, the connector assembly can move in the sliding groove after the back tightening nut is unscrewed, and the distance between the connector assembly is adjusted. The first air source connector is connected with the connector assembly through a hose, the flow dividing devices are communicated with the connector assembly, the interiors of the flow dividing devices are communicated, and the second air source connector is connected to a test bed air source. The spacing distance of the joint assemblies of the test device can be adjusted according to the external dimensions and the test number of fluid transfer and control products in aerospace, land loading, ships and the like, the inspection number of single test pieces is increased, the test efficiency is improved, the specifications and the number of test tube banks are reduced, and the utilization rate of the test device is increased.

Description

Technical Field

[0001] This utility model belongs to the field of airtightness testing technology for fluid transmission and control products in aerospace, land equipment, and ships, and specifically relates to an airtightness testing connection device for aviation accessories. Background Technology

[0002] In the aerospace, land-based equipment, and shipbuilding industries, fluid transmission control products are mostly used to control flow and pressure within systems to achieve target functions and effects. The media used are often aviation hydraulic oil, aviation kerosene, and refrigerant-like media. These products are characterized by a wide variety of types, small batches, and multiple specifications, with short production cycles. This necessitates frequent replacement of test connection devices during testing, impacting product testing efficiency.

[0003] Currently, product airtightness testing primarily employs the bubble method and the surface leakage method. The bubble method involves completely immersing the product in a test medium (potassium dichromate solution, alcohol, etc.) and then introducing a test medium (compressed air, oxygen, nitrogen, etc.) into it, checking for bubbles emerging from the surface to determine product compliance. The surface leakage method involves drying the product surface and then introducing a test medium (aviation hydraulic oil, aviation kerosene, lubricating oil, etc.) into it, checking for leakage. Commonly used airtightness testing equipment consists of single-piece hose connections or multi-piece test tube connections. The fixed positions of the test tube joints prevent adjustable spacing, limiting its applicability. However, due to the diverse, small-batch, and multi-specification characteristics of aviation products, test tube specifications vary widely, leading to low utilization rates for some tubes and significant resource waste. Utility Model Content

[0004] The purpose of this utility model is to provide a connection device for airtightness testing of aviation accessories. The device can adjust the spacing of the joint components of the test device according to the appearance size and test quantity of fluid transmission and control products such as aerospace, land equipment, and ships, thereby increasing the number of test pieces inspected at one time, improving test efficiency, reducing the specifications and quantity of test pipes, and increasing the utilization rate of the test device.

[0005] This utility model provides a technical solution for an airtightness test connection device for aviation accessories. It includes a flow divider and a guide rail. Ten air source connectors (first type) are symmetrically installed on both sides of the flow divider, each equipped with an electrically controlled one-way shut-off valve. An air source connector (second type) is installed at one end of the flow divider. The guide rail has a sliding groove on which connector assemblies are installed. The connector assemblies are fixed to the guide rail by tightening nuts. Loosening the tightening nuts allows the connector assemblies to move within the sliding groove, adjusting the spacing between them. The first air source connector is connected to the connector assemblies via a flexible hose, enabling communication between the flow divider and the connector assemblies. The flow divider is internally interconnected. The second air source connector is connected to the air source of the test bench.

[0006] Furthermore, gas source connector one and gas source connector two are respectively sealed with the diversion device using a 74° conical surface, and after tightening, they form a hard seal pair to ensure the sealing requirements.

[0007] Furthermore, the connector assembly consists of a connector and a guide block. The connector has two vertically connected pipe nozzles, one of which is an air source inlet and the other is an air source outlet. The guide block has a T-shaped cross-section, and the narrow end of the guide block is welded to the end of the connector away from the pipe nozzle.

[0008] Furthermore, the connector assembly is provided in several groups, and the number of connections of the connector assembly can be increased or decreased by means of an electrically controlled one-way shut-off valve and a hose.

[0009] Furthermore, both ends of the hose are secured with outer nuts.

[0010] The beneficial effects of this utility model are: the spacing distance of the joint components of the test device can be adjusted according to the appearance size and test quantity of fluid transmission and control products such as aerospace, land equipment, and ships, thereby increasing the number of test pieces inspected at one time, improving test efficiency, reducing the specifications and quantity of test pipes, and increasing the utilization rate of the test device. Attached Figure Description

[0011] The accompanying drawings, which are incorporated in and constitute a 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. Obviously, 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. In the drawings:

[0012] Figure 1 This is a schematic diagram of the airtightness test connection device for aviation accessories provided by this utility model;

[0013] Figure 2 This is a schematic diagram of the connector assembly structure provided by this utility model;

[0014] Figure 3 A schematic diagram of the connector structure provided by this utility model;

[0015] Figure 4 A schematic diagram of the guide block structure provided by this utility model;

[0016] Figure 5 Left view of the guide block provided by this utility model;

[0017] Figure 6 A schematic diagram of the back-tightening nut structure provided by this utility model;

[0018] In the attached image:

[0019] 1-Hose

[0020] 2-Diverter

[0021] 3-Electrically controlled one-way shut-off valve

[0022] 4-Gas Source Connector One

[0023] 5-Tighten the nut

[0024] 6-Connector assembly, 61-Connector, 62-Guide block, 611-Connecting nozzle

[0025] 7-Guide Rail

[0026] 8-Gas source connector two. Detailed Implementation

[0027] 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.

[0028] Please see Figure 1-6 The present invention will now be described in further detail through specific embodiments and in conjunction with the accompanying drawings.

[0029] Figure 1-6 This invention illustrates the structure of an aviation accessory airtightness test connection device. The device includes a diversion device 2 and a guide rail 7. Ten air source connectors 4 are symmetrically installed on both sides of the diversion device 2, each equipped with an electrically controlled one-way shut-off valve 3. An air source connector 8 is installed at one end of the diversion device 2. The guide rail 7 has a sliding groove 71, on which a connector assembly 6 is installed. The connector assembly 6 is fixed to the guide rail 7 by a back-tightening nut 5. The air source connectors 4 are connected to the connector assembly 6 via hoses 1. The diversion device 2 is internally interconnected. The air source connector 8 is connected to the air source of the test bench. The connector assembly 6 consists of a connector 61 and a guide block 62. The connector 61 has two mutually perpendicularly connected nozzles 611, one for air source inlet and the other for air source outlet. The guide block 62 has a T-shaped cross-section, with its narrow end welded to the end of the connector 61 furthest from the nozzle 611. The hoses 1 are secured at both ends with outer nuts. The gas source connector 4 and the gas source connector 8 are respectively sealed with the diversion device 2 using a 74° conical surface. The connector assembly 6 is provided with ten sets. The number of connections of the connector assembly 6 can be increased or decreased by the electrically controlled one-way shut-off valve 3 and the hose 1.

[0030] When an airtightness test is required on the product, first adjust the spacing and number of connector assemblies 6 according to the product's external dimensions. Install the product onto connector assemblies 6 using threaded connectors, and then fix connector assemblies 6 onto guide rails 7 using back tightening nuts 5. Connect air source connector 1 4 and connector assemblies 6 using hose 1. Then connect air source connector 2 8 on the end face of the diverter 2 to the air source of the test bench. When an airtightness test is required, open the electrically controlled one-way shut-off valve 3. The air source enters the product through the diverter 2, hose 1, and connector assemblies 6. When the product to be tested is filled with compressed air, maintain the pressure for 3 to 15 minutes. Observe in the test medium or check the product for any leakage.

[0031] 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 connection device for testing the airtightness of aircraft accessories, characterized in that: The device includes a diversion device (2) and a guide rail (7). Ten air source connectors (4) are symmetrically installed on both sides of the diversion device (2). Each air source connector (4) is equipped with an electrically controlled one-way shut-off valve (3). An air source connector (8) is installed at one end of the diversion device (2). The guide rail (7) is provided with a slide groove (71). A connector assembly (6) is installed on the slide groove (71). The connector assembly (6) is fixed on the guide rail (7) by a back tightening nut (5). The air source connector (4) is connected to the connector assembly (6) through a hose (1). The diversion device (2) is interconnected internally. The air source connector (8) is connected to the air source of the test bench.

2. The airtightness test connection device for aviation accessories according to claim 1, characterized in that: The gas source connector one (4) and the gas source connector two (8) are respectively sealed with the diversion device (2) using a 74° conical surface.

3. The airtightness test connection device for aviation accessories according to claim 1, characterized in that: The connector assembly (6) consists of a connector (61) and a guide block (62). The connector (61) has two vertically connected pipe nozzles (611), one of which is an air source inlet and the other is an air source outlet. The guide block (62) has a T-shaped cross-section, and the narrow end of the guide block (62) is welded to the end of the connector (61) away from the pipe nozzle (611).

4. The airtightness test connection device for aviation accessories according to claim 1, characterized in that: The connector assembly (6) is provided with several groups.

5. The airtightness test connection device for aviation accessories according to claim 1, characterized in that: The hose (1) is fixedly connected at both ends with outer nuts.

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