High-pressure inner cavity lead structure applied to aero-engine combustion chamber test

Abstract

The invention discloses a high-pressure inner cavity lead structure applied to an aero-engine combustion chamber test, a lead transfer cavity is provided with a transfer cavity glue injection hole, a lead pipe is provided with a lead pipe glue injection hole, and cable gaps of twelve-core copper wires and gaps of twelve pin ends of an internal socket are tightly filled with sealing filling glue; the switching cavity glue injection hole and the lead tube glue injection hole are sealed, melted and blocked by a melting and blocking body, so that a dead cavity is formed in the lead switching cavity and the lead tube. The module installation seat is in butt joint communication with the high-voltage inner cavity environment, and the cable gaps of the twelve-core copper wires and the gaps of the twelve pin ends of the internal connection socket are tightly filled with the sealing filling glue, so that the sealing performance of the cable penetrating through the closed inner cavity environment is ensured, and the problem that the cable with the gaps cannot be sealed is solved. And the sealing performance at the environment penetrating through the closed inner cavity cannot be ensured.

Description

Technical Field

[0001] The invention relates to a high-pressure inner cavity lead structure used in aero-engine combustion chamber testing, belonging to the technical field of aero-engines. Background Art

[0002] During the test of the aircraft engine combustion chamber, a data acquisition device needs to be installed to collect temperature, pressure and other data. Since the temperature of the aircraft engine combustion chamber is relatively high, in order to ensure the high temperature resistance of the cable of the data acquisition device, it is necessary to establish a closed inner cavity environment and pass a cooling medium to cool the cable. The prior art is shown in Chinese Patent Publication No. CN119023450A.

[0003] When multiple cables pass through a closed inner cavity environment, they are directly led out. Due to the gaps between the cables, the sealing of the cables themselves at the point where they pass through the closed inner cavity environment cannot be guaranteed. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a high-pressure inner cavity lead structure used in aero-engine combustion chamber testing.

[0005] The present invention is achieved through the following technical solutions.

[0006] The present invention provides a high-pressure inner cavity lead structure for use in aero-engine combustion chamber testing, comprising:

[0007] Module mounting base;

[0008] The lead module housing is sealed and fixedly installed with the module mounting seat.

[0009] The lead module housing comprises an internal plug mounting seat, a lead transfer cavity, a transfer seat and a lead tube which are sealed and fixedly connected in sequence. An internal socket is installed in the internal plug mounting seat, and the pin end of the internal socket extends into the lead transfer cavity.

[0010] It also includes an external plug, which is connected to a cable; the cable is a twelve-core copper wire corresponding to the twelve pin ends of the internal socket; the cable passes through the lead tube through the adapter seat to the lead adapter cavity, and the cable is correspondingly connected to the pins of the internal socket to achieve electrical connection.

[0011] The lead wire transfer cavity is provided with a transfer cavity glue injection hole, and the lead wire tube is provided with a lead wire tube glue injection hole. The cable gap of the twelve-core copper wire and the gap of the twelve pin ends of the internal socket are tightly filled with sealing filling glue; the transfer cavity glue injection hole and the lead wire tube glue injection hole are sealed and melt-blocked by a melting plugging body, so that a dead cavity is formed inside the lead wire transfer cavity and the lead wire tube.

[0012] The sealing filling glue is epoxy resin.

[0013] A sealing gasket is installed between the module mounting seat and the adapter seat to perform a sealing function.

[0014] A mixed sealing filler is used to seal the cable and the lead tube. A sealing compression ring is extruded on the outside of the lead tube of the lead module housing. The sealing compression ring compresses the mixed sealing filler in the gap at the end of the horn mouth between the cable and the lead tube to seal.

[0015] The mixed sealing filler is made of asbestos rope and epoxy resin.

[0016] The beneficial effects of the present invention are as follows: the module mounting seat is connected to the high-voltage inner cavity environment, and the sealing filling glue tightly fills the cable gap of the twelve-core copper wire and the gap at the twelve pin ends of the internal socket, thereby ensuring the sealing of the cable passing through the closed inner cavity environment, and solving the problem that the sealing of the cable with gaps cannot be guaranteed when passing through the closed inner cavity environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a front cross-sectional schematic diagram of the present invention;

[0018] Figure 2 yes Figure 1 Left view of

[0019] Figure 3 It is a front cross-sectional schematic diagram of the lead module housing and the external plug distribution of the present invention;

[0020] Figure 4 is a front cross-sectional schematic diagram of a lead module housing of the present invention;

[0021] Figure 5 It is a schematic structural diagram of the sealing gasket of the present invention;

[0022] Figure 6 It is a structural schematic diagram of the lead wire transfer cavity of the present invention;

[0023] In the figure: 1-module mounting seat; 2-hexagon socket bolt; 3-sealing gasket; 4-internal socket; 5-sealing filling glue; 6-connecting cable; 7-lead module housing; 8-tightening nut; 9-mixed sealing filler; 10-sealing pressing ring; 11-external plug; 21-internal plug mounting seat; 22-lead adapter cavity; 23-adapter seat; 24-lead tube; 41-adapter cavity glue injection hole; 51-lead tube glue injection hole; 61-mounting plate flange bolt hole; 62-mounting plate module mounting hole; 63-module mounting bolt hole. DETAILED DESCRIPTION

[0024] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0025] like Figures 1 to 6 shown.

[0026] The present application discloses a high-pressure inner cavity lead structure for use in an aircraft engine combustion chamber test, comprising:

[0027] A module mounting seat 1 is sealed and fixedly connected to a closed inner cavity environment, and the module mounting seat 1 is provided with eight disc flange bolt holes 61 distributed in a circumferential array. When the closed inner cavity environment is a cold air high-pressure inner cavity environment of the test device, the cold air inner cavity of the test device has an interface flange, and the disc flange bolt holes 61 of the module mounting seat 1 are fixedly connected by bolts, and a flange sealing ring is installed at the flange joint for sealing; a lead module mounting hole 62 is provided in the middle of the module mounting seat 1, for the lead module shell 7 to pass through with the internal socket 4; the adapter 23 of the lead module shell 7 is fixedly connected to the lead module mounting hole 62 of the module mounting seat 1 by a hexagon socket bolt 2.

[0028] A lead module shell 7 is sealed and fixedly installed on the module mounting seat 1; the lead module shell 7 includes an internal plug mounting seat 21, a lead transfer cavity 22, an adapter seat 23, and a lead tube 24 that are welded and sealed and fixed in sequence, and an internal socket 4 is installed in the internal plug mounting seat 21, and the pin end of the internal socket 4 extends into the lead transfer cavity 22.

[0029] It also includes an external plug 11, the external plug 11 is connected to a cable 6, the cable 6 is a twelve-core copper wire corresponding to the twelve pin ends of the internal socket 4, the cable 6 passes through the lead tube 24 through the adapter 23 to the lead adapter cavity 22, the cable 6 is connected to the pins of the internal socket 4 correspondingly to achieve electrical communication, and the adapter 23 of the lead module housing 7 is fixedly connected to the lead module mounting hole 62 of the module mounting seat 1 by the hexagon socket bolt 2;

[0030] The lead wire transfer cavity 22 is provided with a transfer cavity injection hole 41, and the lead wire tube 24 is provided with a lead wire tube injection hole 51. The sealing filling glue 5 is first injected into the lead wire transfer cavity 22 through the transfer cavity injection hole 41, and the sealing filling glue 5 is allowed to solidify and tightly fill the gap between the cable 6 of the twelve-core copper wire and the gap between the twelve pin ends of the internal socket 4 by using the gravity effect, and then the lead wire tube injection hole 51 on the lead wire tube 24 is used for secondary injection and solidification. Finally, the transfer cavity injection hole 41 and the lead wire tube injection hole 51 are sealed and melted to form a dead cavity inside the lead wire transfer cavity 22 and the lead wire tube 24. Even if there is a leak at the internal plug 4, the pressure will only stagnate in the lead wire transfer cavity 21, and cannot leak out through the lead wire transfer cavity 22 and the lead wire tube 24. The sealing filling glue 5 is epoxy resin.

[0031] The module mounting base 1 is tightly connected to the interface flange of the cold air high-pressure inner cavity environment of the test device, and the sealing filling glue 5 tightly fills the gap between the cable 6 of the twelve-core copper wire and the gap between the twelve pin ends of the internal socket 4, thereby ensuring the sealing of the cable passing through the closed inner cavity environment, and solving the problem that the sealing of the cable with gaps cannot be guaranteed when passing through the closed inner cavity environment.

[0032] A sealing gasket 3 is installed between the module mounting seat 1 and the adapter seat 23 of the lead module housing 7. The sealing gasket 3 can be made of materials such as nitrile rubber, polytetrafluoroethylene, or copper.

[0033] A mixed sealing filler 9 is used to seal between the cable 6 and the lead tube 24. The outside of the lead tube 24 of the lead module housing 7 is sealed by extruding a sealing clamping ring 10. The sealing clamping ring 10 presses the mixed sealing filler 9 against the gap at the end of the horn mouth between the cable 6 and the lead tube 24 to seal.

[0034] The mixed sealing filler 9 is made by mixing asbestos rope and epoxy resin.

Claims

1. A high-pressure inner cavity lead structure used in aero-engine combustion chamber test, characterized in that: include: Module mounting seat (1); The lead module housing (7) is sealed and fixedly installed on the module mounting seat (1).

2. The high-pressure inner cavity lead structure used in the combustion chamber test of an aircraft engine as claimed in claim 1, characterized in that: The lead module housing (7) comprises an internal plug mounting seat (21), a lead transfer cavity (22), a transfer seat (23), and a lead tube (24) which are sealed and fixedly connected in sequence; an internal socket (4) is mounted in the internal plug mounting seat (21), and a pin end of the internal socket (4) extends into the lead transfer cavity (22).

3. The high-pressure inner cavity lead structure used in the combustion chamber test of an aircraft engine as claimed in claim 2, characterized in that: It also includes an external plug (11), the external plug (11) is connected to a cable (6); the cable (6) is a twelve-core copper wire corresponding to the twelve pin ends of the internal socket (4); the cable (6) passes through the lead tube (24) through the adapter seat (23) to the lead adapter cavity (22), and the cable (6) is connected to the pins of the internal socket (4) correspondingly to achieve electrical communication.

4. The high-pressure inner cavity lead structure used in the combustion chamber test of an aircraft engine as claimed in claim 3, characterized in that: The lead wire transfer cavity (22) is provided with a transfer cavity glue injection hole (41), and the lead wire tube (24) is provided with a lead wire tube glue injection hole (51); the gaps between the twelve-core copper wire cables (6) and the gaps between the twelve pin ends of the internal socket (4) are tightly filled with sealing filling glue (5); the transfer cavity glue injection hole (41) and the lead wire tube glue injection hole (51) are sealed and melt-blocked by a melt-blocking body, so that a dead cavity is formed inside the lead wire transfer cavity (22) and the lead wire tube (24).

5. The high-pressure inner cavity lead structure used in the combustion chamber test of an aircraft engine as claimed in claim 4, characterized in that: The sealing filling glue (5) is epoxy resin.

6. The high-pressure inner cavity lead structure used in the combustion chamber test of an aircraft engine as claimed in claim 1, characterized in that: A sealing gasket (3) is installed between the module mounting seat (1) and the adapter seat (23) of the lead module housing (7) to perform a sealing function.

7. The high-pressure inner cavity lead structure used in the combustion chamber test of an aircraft engine as claimed in claim 3, characterized in that: A mixed sealing filler (9) is provided between the cable (6) and the lead tube (24) for sealing, and a sealing clamping ring (10) is extruded outside the lead tube (24) of the lead module housing (7). The sealing clamping ring (10) presses the mixed sealing filler (9) against the gap at the end of the horn mouth between the cable (6) and the lead tube (24) for sealing.

8. The high-pressure inner cavity lead structure used in the combustion chamber test of an aircraft engine as claimed in claim 7, characterized in that: The mixed sealing filler (9) is made of a mixture of asbestos rope and epoxy resin.

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