Connector pipe nozzle welding assembly structure

Abstract

The utility model discloses a connector pipe nozzle welding assembly structure which comprises a base plate, a connector pipe nozzle and a front plate, one end of the connector pipe nozzle is connected with the base plate, a connecting piece is arranged on the connector pipe nozzle, and the connector pipe nozzle is connected with the front plate through the connecting piece. According to the utility model, when the interface pipe nozzle and the product cold cavity are welded and assembled, the cold cavity part front disc is split into two parts, namely the front disc and the connecting piece. And after the interface pipe nozzle and the hot cavity part of the product are welded, the connecting piece and the interface pipe nozzle are subjected to metal plate positioned welding, then the front disc is matched with the welded connecting piece, and then the connecting piece and the front disc are subjected to argon arc welding. According to the improved connector assembly structure, the problem of assembly interference of a connector pipe nozzle after titanium alloy parts are welded is solved, and meanwhile the assembly welding manufacturability of products is improved.

Description

Technical Field

[0001] This utility model belongs to the field of nozzle assembly technology, and particularly relates to an interface nozzle welding assembly structure. Background Technology

[0002] Among the components used in aircraft, there are products with integral curved cavity structures, whose structures are mainly divided into cold and hot cavities. The product has two interface nozzles, which, after assembly with the cold and hot cavities, form a relative "V" relationship. The interface nozzles are assembled with the hot cavity using resistance welding and argon arc welding, while those with the cold cavity are assembled using argon arc welding. The main material for the cold and hot cavity structural parts is titanium alloy. Welding deformation occurs after the interface nozzles are welded. Because titanium alloy cannot be directly shaped in a cold state, local interference occurs when assembling the nozzles from the hot cavity to the cold cavity parts, compromising subsequent processing.

[0003] In the existing process, after the interface nozzle and the product's hot cavity are machined, welding deformation occurs at the weld between the chassis and the interface nozzle, resulting in a 1-2mm offset between the two interface nozzles. Although this deformation offset meets the product's external interface size requirements, it prevents assembly with the holes on the front disc parts, making further product processing impossible. Therefore, the original interface nozzle connection structure needs to be improved to ensure the welding processing of the product's interface nozzle and parts.

[0004] Patent document CN119187752A discloses a processing method and heat-setting device for V-shaped interface nozzles. The heat-setting device includes a base, clamp, pull rod, baffle, spring, positioning support, positioning mandrel, adapter mandrel, and mounting support. It can ensure the processing technical requirements of V-shaped interface nozzle products and achieve positional accuracy control of the two V-shaped nozzles within ±0.2mm. However, this patent does not cover the technical content of welding the interface nozzles. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides an interface nozzle welding assembly structure.

[0006] This utility model is achieved through the following technical solution.

[0007] This utility model provides a welding assembly structure for an interface nozzle, including a chassis, an interface nozzle, and a front chassis. One end of the interface nozzle is connected to the chassis, and a connector is provided on the interface nozzle. The interface nozzle is connected to the front chassis through the connector.

[0008] Preferably, a gas collection hood is provided on the chassis, one end of which is connected to the chassis, and the other end of which is connected to the interface nozzle and the connector respectively.

[0009] Preferably, the front disc is provided with a mounting port, and the interface pipe nozzle penetrates the front disc through the mounting port.

[0010] Preferably, the front disc is provided with an opening, and the mounting port is arranged on both sides of the opening.

[0011] Preferably, the interface pipe nozzle is provided with two, and the two interface pipe nozzles are arranged on the bottom disc in an inclined manner.

[0012] Preferably, the bottom disc and the front disc are both arc-shaped.

[0013] Preferably, the interface pipe nozzle is welded to the bottom disc and the connecting piece, and the connecting piece is welded to the front disc.

[0014] The beneficial effects of the utility model lie in:

[0015] The utility model discloses an interface pipe nozzle and product cold cavity welding assembly, and the cold cavity part front disc is split into two parts, namely the front disc and the connecting piece. After the interface pipe nozzle and the product hot cavity part complete welding processing, first, the connecting piece and the interface pipe nozzle are fixed and positioned by metal plate, then, the front disc and the welded connecting piece are adapted, and then, the connecting piece and the front disc are argon arc welded. The interface assembly structure of the utility model improves, solves the interface pipe nozzle assembly interference problem after titanium alloy part welding, and simultaneously improves product assembly welding process performance. DRAWINGS

[0016] Fig. 1 It is the overhead structure schematic diagram of the utility model;

[0017] Fig. 2 It is the cross section structure schematic diagram of the utility model;

[0018] Fig. 3 It is the interface pipe nozzle distribution schematic diagram of the utility model;

[0019] Fig. 4 It is the structure schematic diagram of region C of the utility model;

[0020] Fig. 5 It is the cross section structure schematic diagram of the utility model;

[0021] Fig. 6 It is the structure schematic diagram of region D of the utility model;

[0022] In the drawing: 1-bottom disc, 2-interface pipe nozzle, 3-front disc, 31-mounting port, 32-opening, 4-connecting piece, 5-gas collecting cover. DETAILED DESCRIPTION

[0023] The technical scheme of the utility model is further described below, but the scope of protection is not limited to the description.

[0024] Example:

[0025] like Figs. 1 to 6 As shown, an interface nozzle welding assembly structure includes a chassis 1, an interface nozzle 2, and a front plate 3. One end of the interface nozzle 2 is connected to the chassis 1. A connector 4 is provided on the interface nozzle 2. The interface nozzle 2 is connected to the front plate 3 through the connector 4. The connector 4 is used to solve the assembly interference between the interface nozzle 2 and the front plate 3.

[0026] A gas collecting hood 5 is installed on the chassis 1. One end of the gas collecting hood 5 is connected to the chassis 1, and the other end is connected to the interface nozzle 2 and the connector 4. The chassis 1 mainly serves as the base structure of the interface nozzle 2, and is connected to the interface nozzle 2 by spot welding and argon arc welding, bearing the main force at the interface nozzle 2. The gas collecting hood 5, the interface nozzle 2, and the chassis 1 are connected by argon arc welding to form a closed cavity (thermal cavity).

[0027] The front disc 3 is provided with an installation port 31, and the interface nozzle 2 passes through the installation port 31 and is connected to the installation port 31 by a connector 4.

[0028] An opening 32 is provided on the front disc 3, and the mounting ports 31 are provided on both sides of the opening 32.

[0029] Two interface nozzles 2 are provided, and the two interface nozzles 2 are arranged at an angle to each other on the chassis 1.

[0030] Both the chassis 1 and the front disc 3 are arc-shaped. The chassis 1 and the front disc 3 can be part of the curved cavity structure. The chassis 1 can be part of the hot cavity structure, and the front disc 3 can be part of the cold cavity structure.

[0031] The interface nozzle 2 is welded to the chassis 1 and the connector 4, and the connector 4 is welded to the front disc 3.

[0032] Welding method for this assembly structure:

[0033] S1: Position the bottom of the two interface nozzles 2 to the chassis 1 using sheet metal positioning welding. Then, spot weld the interface nozzles 2 to the chassis 1. After spot welding, perform circumferential argon arc welding at the sheet metal positioning weld points between the interface nozzles 2 and the chassis 1.

[0034] S2: Connect the gas collection shroud 5 of the hot cavity component to the interface nozzle 2 using argon arc welding. This completes the machining process of connecting the interface nozzle 2 to the hot cavity.

[0035] S3: Perform sheet metal positioning welding and argon arc welding on the interface nozzle 2 and the connector 4, then adapt the front disc 3 to the connector 4, and then perform argon arc welding on the front disc 3 and the connector 4.

Claims

1. An interface nozzle weld assembly, characterized by: It comprises a bottom disc (1), an interface pipe nozzle (2) and a front disc (3), one end of the interface pipe nozzle (2) is connected with the bottom disc (1), a connecting piece (4) is arranged on the interface pipe nozzle (2), and the interface pipe nozzle (2) is connected with the front disc (3) through the connecting piece (4).

2. An interface nozzle weld assembly as defined in claim 1, wherein: A gas collecting cover (5) is arranged on the bottom disc (1), one end of the gas collecting cover (5) is connected with the bottom disc (1), and the other end of the gas collecting cover (5) is connected with the interface pipe nozzle (2) and the connecting piece (4) respectively.

3. An interface nozzle weld assembly as defined in claim 1, wherein: An installation port (31) is arranged on the front disc (3), and the interface pipe nozzle (2) penetrates through the front disc (3) through the installation port (31).

4. An interface nozzle weld assembly as defined in claim 3, wherein: An opening (32) is arranged on the front disc (3), and the installation port (31) is arranged on both sides of the opening (32).

5. An interface nozzle weld assembly as defined in claim 1, wherein: Two interface pipe nozzles (2) are arranged, and the two interface pipe nozzles (2) are arranged on the bottom disc (1) in an inclined distribution.

6. An interface nozzle weld assembly as defined in claim 1, wherein: The bottom disc (1) and the front disc (3) are both arc-shaped.

7. An interface nozzle weld assembly as defined in claim 1, wherein: The interface pipe nozzle (2), the bottom disc (1) and the connecting piece (4) are all welded, and the connecting piece (4) is welded with the front disc (3).

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