CN116697167A

CN116697167A - Multi-channel fluid connector

Info

Publication number: CN116697167A
Application number: CN202210182370.6A
Authority: CN
Inventors: 王光强; 朱琳; 水浪; 吉帅
Original assignee: AECC Commercial Aircraft Engine Co Ltd
Current assignee: AECC Commercial Aircraft Engine Co Ltd
Priority date: 2022-02-25
Filing date: 2022-02-25
Publication date: 2023-09-05

Abstract

A multi-channel fluid connector for improving the condition of inconvenient operation of pipeline connection, comprising two separable half parts, each half part is provided with a plurality of plug connectors for plug connection when the two half parts are combined; each of the halves further has a plurality of conduits for connecting to external piping, each of the conduits communicating with the plug connector.

Description

Multi-channel fluid connector

Technical Field

The invention relates to the field of connection and sealing of pipelines of aeroengines, in particular to a multichannel fluid connector.

Background

The external pipeline of the aeroengine is an important component of the aeroengine and is the root of ensuring the sealing and reliable conveying of the fluid medium under certain environmental conditions. The connection between pipelines is generally formed by the mutual matching and connection of a pipe joint male head and a pipe joint female head, so that the sealing and reliable conveying of fluid media under certain pressure, temperature, flow, vibration and other environmental conditions are ensured. The large duct is larger than the fan casing and the core section of the turbofan engine in size difference, so that the assembly, the processing and the manufacturing are convenient, a pipeline of the fan casing and a corresponding pipeline of the core section are disconnected at the intermediate casing and are connected with an interface on a partition plate at the intermediate casing in a threaded manner, and fuel oil medium and lubricating oil medium are transmitted, but the space of the partition plate is narrow, and the pipeline connection operation is inconvenient.

Disclosure of Invention

The invention aims to provide a multichannel fluid connector, which is used for improving the condition that the pipeline connection operation is inconvenient.

According to an embodiment of the invention, a multi-channel fluid connector comprises two separable halves, each of said halves having a plurality of plug connectors for plug communication when said halves are joined;

each of the halves further has a plurality of conduits for connecting to external piping, each of the conduits communicating with the plug connector.

In one or more embodiments, one of the two halves is a male portion and the other half is a female portion, the male portion being inserted into the female portion for a plug-in connection.

In one or more embodiments, the plug connector of one of the halves is a male connector and the plug connector of the other of the halves is a female connector, the male connector being inserted into the female connector for plug-in communication.

In one or more embodiments, the mating of the male portion and the female portion is sealed by a first seal ring;

the plug of the plug connector is sealed through a second sealing ring.

In one or more embodiments, each of the halves further has a plurality of chambers separated from each other, each of the conduits communicating with the plug connector through the chambers;

the plurality of chambers are separated by a thin heat transfer wall, at least one of the chambers for high temperature fluid flow being adjacent to the chamber for low temperature fluid flow.

In one or more embodiments, an end of each of the conduits of each of the halves that connects to the external piping extends outwardly away from the half.

In one or more embodiments, each of the conduits connects to the external piping via a squeeze joint.

In one or more embodiments, one of the two halves has a guide hole and the other has a guide post, the cooperation of the guide hole and the guide post being used to guide the two halves together.

In one or more embodiments, the two halves have a bolt through hole for the bolt to pass through, and the combination of the two halves is locked by the bolt.

In one or more embodiments, a spacer is also included that is clamped by the two halves when the two halves are joined to adjust the distance between the two halves.

In one or more embodiments, the multichannel fluid connector is an aircraft engine fluid connector for a hybrid connection of a fuel line and a lubricant line.

Embodiments of the present invention have at least one of the following benefits:

1. the assembly operation is simple, and the two half parts can be combined to connect all the plurality of external pipelines at one time, so that the operation difficulty is reduced, and the assembly efficiency is improved.

2. The assembly deformation and the stress are small, and the two half parts can be combined to connect all the plurality of external pipelines at one time, so that the assembly deformation and the stress generated by connecting the single external pipelines one by one in sequence during the connection of the partition plates are avoided.

3. The thermal deformation and stress are small, and the heat exchange is fully carried out on the fluids with different temperatures in the adjacent chambers through the heat transfer thin wall, so that the temperature difference between the high-temperature fluid and the low-temperature fluid is reduced, and the thermal deformation and the stress caused by the thermal deformation are reduced.

4. The sealing between the two halves and the sealing between the plug connectors realize double sealing, and the reliability of the sealing is improved.

Drawings

The above and other features, properties and advantages of the present invention will become more apparent from the following description in conjunction with the accompanying drawings and embodiments, in which:

FIG. 1 is a schematic illustration of a prior art connection of pipes through a partition;

FIG. 2 is an assembly view of a multichannel fluid connector;

FIG. 3 is an exploded view of the multichannel fluid connector;

FIG. 4 is a cross-sectional view of a multichannel fluid connector;

FIG. 5 is a schematic view of the male part;

FIG. 6 is a schematic structural view of the female portion;

reference numerals:

1-a separator;

2-interface;

a 3-multichannel fluid connector;

6-male part;

7-a female part;

8-a boss;

9-pit;

10-a first seal groove;

11-a first sealing ring;

12-male;

13-female;

14-a second seal groove;

15-a second sealing ring;

16-an external line;

17-a catheter;

18-chamber;

19-a substrate;

20-cover plate;

21-a through hole;

22-heat transfer thin wall;

23-extrusion joint;

24-guiding holes;

25-guide posts;

26-bolts;

27-a bolt through hole;

28-gasket.

Detailed Description

The present invention will be further described with reference to specific embodiments and drawings, in which more details are set forth in the following description in order to provide a thorough understanding of the present invention, but it will be apparent that the present invention can be embodied in many other forms than described herein, and that those skilled in the art may make similar generalizations and deductions depending on the actual application without departing from the spirit of the present invention, and therefore should not be construed to limit the scope of the present invention in terms of the content of this specific embodiment.

It is noted that these and other figures are merely examples, which are not drawn to scale and should not be construed as limiting the scope of the invention as it is actually claimed.

The terms "first," "second," and the like, may be used interchangeably to distinguish one feature from another and are not intended to mean that the various features must be in the positions shown in the various embodiments.

The large duct is larger than the size difference between the fan casing and the core section of the turbofan engine, so that the assembly, the processing and the manufacturing are convenient, and the pipeline of the fan casing is disconnected with the corresponding pipeline of the core section and is in threaded connection with the interface on the partition board 1 at the intermediate casing. Fig. 1 is a schematic diagram of a prior art pipeline connected by a partition 1. As shown in fig. 1, two sides of the partition board 1 are provided with a plurality of connectors 2, the connectors 2 at corresponding positions on two sides of the partition board 1 are communicated with each other, and two pipelines are respectively in threaded connection with the two connectors 2 at corresponding positions on two sides of the partition board 1, so that the communication of the two pipelines is realized, and fluid medium is transmitted.

However, the connecting lines through the partition plate 1 have the following disadvantages:

1. the difficulty of assembly operation is great. The space of the partition plate is narrow, the number of pipelines to be connected is large, and even if the assembly sequence is adjusted, the pipelines to be assembled still have insufficient operation space, so that the assembly operation is difficult.

2. The assembly deformation and stress are large. The pipelines are sequentially installed one by one, and because of the existence of pipeline machining errors and assembly errors, pipelines which are arranged in front in sequence can lead to deformation of the partition board 1, so that pipelines which are arranged in back in sequence cannot be installed, the partition board 1 needs to be calibrated or forcibly installed, the pipelines and the partition board 1 have deformation and stress to different degrees, and hidden danger is brought to the operation of an engine.

3. The thermal deformation and stress are large. The multiple pipelines connected with the partition board 1 are used for conveying fuel oil medium and lubricating oil medium, and the temperature of the medium is different due to the fact that the medium conveyed by the pipelines is different, the temperature of the fuel oil is low, the temperature of the lubricating oil is high, the thermal deformation is obviously different due to the temperature difference, the thermal deformation generates stress, and the service lives of the pipelines and the partition board 1 are influenced.

Fig. 2 shows the multichannel fluid connector 3 of the present embodiment, and the structure of the plurality of parts of the multichannel fluid connector 3 can be seen from the exploded view shown in fig. 3, fig. 4 is cut from the multichannel fluid connector 3 by a transverse cross section, fig. 5 shows the structure of the male part 6, and fig. 6 shows the structure of the female part 7.

As shown in fig. 2 to 4, the multi-channel fluid connector 3 comprises two separable halves 6, 7, each half 6 or 7 having a plurality of plug connectors 12, 13 for plug communication when the two halves 6, 7 are joined, with continued reference to fig. 5 and 6, one half 6 of the two halves 6, 7 being a male part and the other half 7 being a female part, so that in the following description the male part corresponds to reference numeral 6 and the female part corresponds to reference numeral 7. The male part 6 is provided with a boss 8 at the combining side, the female part 7 is provided with a pit 9 which is matched with the boss 8 at the combining side, when the two half parts 6 and 7 are combined, the male part 6 is inserted into the female part 7 for splicing and combining, specifically, the boss 8 of the male part 6 is inserted into the pit 9 of the female part 7, the side wall of the boss 8 is provided with a first sealing groove 10, a first sealing ring 11 is installed in the first sealing groove, the first sealing ring 11 is an O-shaped rubber sealing ring in an exemplary mode, when the boss 8 is inserted into the pit 9, the first sealing ring 11 is tightly attached to the side wall of the pit 9, and the splicing and combining of the male part 6 and the female part 7 is sealed through the first sealing ring 11.

As shown in fig. 4 to 6, the plug connector 12 of the female part 7 is a male part, the plug connector 13 of the male part 6 is a female part, and thus in the following description the male part corresponds to reference numeral 12, the female part corresponds to reference numeral 13, the male part 12 is inserted into the female part 13 to be in engagement communication, the multi-channel fluid connector 3 has six channels, the male part 6 has six female parts 13, the female part 13 is recessed inward from the top wall of the boss 8 to form a duct for insertion of the male part 12, the female part 7 has six male parts 12, the male parts 12 protrude outward from the bottom wall of the pit 9 and have ducts for fluid to pass through at the center, and the number, position and outer contour of the male parts 12 and the female parts 13 are adapted such that when the male part 6 is inserted into the female part 7 to be combined, the male parts 12 are inserted into the female parts 13 to be in engagement communication, the side walls of the male parts 12 are provided with second seal grooves 14, the second seal 15 is illustratively an O-shaped rubber seal, and when the male parts 12 are inserted into the female parts 13, the second seal 15 is fitted against the side walls of the female parts 13 by the second seal grooves 15. The sealing between the boss 8 and the pit 9 and the sealing between the male head 12 and the female head 13 realize double sealing, and the reliability of sealing is improved.

As shown in fig. 2 to 6, each half 6 or 7 also has a plurality of ducts 17 for connecting the external piping 16, each half 6 or 7 also has a plurality of chambers 18 separated from each other, each duct 17 communicating with the plug connector 12 or 13 through a chamber 18. One example of providing each half 6 or 7 of the foregoing construction includes a base 19 and a cover 20, the cover 20 covering the opposite side of the base 19 from the joining side of the half 6 or 7, the cover covering the opening of the base 19 on the opposite side and thereby defining a cavity 18, the cavity 18 communicating with the plug connector 12 or 13 at the end near the joining side and communicating with the conduit 17 at the end near the opposite side through a through hole 21 in the cover 20. The plurality of chambers 18 are separated by heat transfer thin walls 22, and at least one chamber 18 for high temperature fluid flow is adjacent to a chamber 18 for low temperature fluid flow in the plurality of chambers 18, illustratively the multi-channel fluid connector 3 has six channels, six in number of conduits 17 per half 6 or 7, six in number of chambers 18 in each half 6 or 7, three by two grid-like planar arrangements, the chambers 18 for high temperature fluid flow and the chambers 18 for low temperature fluid flow being arranged in the form shown in table 1, wherein the cells in table 1 represent chambers 18 that are rectangular in shape, in other embodiments circular or other shapes. The plurality of chambers 18 are separated by the heat transfer thin wall 22, and the chambers 18 for high temperature fluid flow are adjacent to the chambers 18 for low temperature fluid flow, so that the fluids with different temperatures in the adjacent chambers 18 fully exchange heat through the heat transfer thin wall 22, the high temperature fluid is cooled, the low temperature fluid is warmed, the temperature difference between the high temperature fluid and the low temperature fluid is reduced, and the thermal deformation and the stress brought by the thermal deformation are reduced.

Chamber 18 for high temperature fluid flow	Chamber 18 for cryogenic fluid flow
		Chamber 18 for cryogenic fluid flow	Chamber 18 for high temperature fluid flow
Chamber 18 for high temperature fluid flow	Chamber 18 for cryogenic fluid flow

TABLE 1

As shown in fig. 4, one end of each conduit 17 communicates with a through hole 21 in the cover plate 20 and thus communicates with the plug connector 12 or 13 via the chamber 18, and one end of each conduit 17 on each half 6 or 7 connected to the external pipe 16 extends outwardly, illustratively back to the joining side, away from the half 6 or 7, and each conduit 17 at that end is connected to the external pipe 16 via a squeeze connector 23. Connecting the conduit 17 to the end of the external pipe 16 remote from the half 6 or 7 allows to relieve the assembly deformations and stresses transmitted to the half 6 or 7 by the assembly of the external pipe 16. The extrusion joint 23 is a standard component and has the advantages of reliable connection and convenient operation.

As shown in fig. 3, 5 and 6, one of the two halves 6, 7 has a guide hole 24 and the other has a guide post 25, the cooperation of the guide hole 24 and the guide post 25 being used to guide the two halves 6, 7 apart and apart, the guide post 25 being illustratively provided at the outer edge of the recess 9 of the female portion 7, the guide hole 24 being provided at the outer edge of the boss 8 of the male portion 6, the guide post 25 being a pin, the guide hole 24 being a pin-locking hole. The guide holes 24 and the guide posts 25 cooperate to guide the disassembly and the combination of the two halves 6, 7 and to perform a precise positioning function.

As shown in fig. 2 to 6, the multi-channel fluid connector 3 further comprises a bolt 26, the two halves 6, 7 have bolt through holes 27 for the bolt 26 to pass through, the bolt through holes 27 on the two halves 6, 7 are aligned when coupled and passed through by the bolt 26, the head and nut of the bolt 26 lock the two halves 6, 7 in the coupled state, the coupling of the two halves 6, 7 is locked by the bolt 26, and the bolt through holes 27 are distributed at four corners of the two halves 6, 7, as an example.

As shown in fig. 2 to 4, the multi-channel fluid connector 3 further comprises a spacer 28, the spacer 28 being clamped by the two halves 6, 7 when the two halves 6, 7 are joined to adjust the distance between the two halves 6, 7, the spacer 28 being clamped by the female part 7 at the outer edge of the recess 9 and the male part 6 at the outer edge of the boss 8, as shown in fig. 3, the spacer 28 having through holes at corresponding positions to allow the bolts 26 and the guide posts 25 to pass through, the spacer 28 being a series of spare pieces of thickness dimension serialized for adjusting the distance between the two halves 6, 7, the spacer 28 having a suitable thickness being selected as required.

The multichannel fluid connector 3 is an aeroengine fluid connector and is used for mixed connection of a fuel pipeline and a lubricating oil pipeline in the aeroengine, at the moment, lubricating oil in the lubricating oil pipeline is high-temperature fluid, and fuel oil in the fuel pipeline is low-temperature fluid. In another or more embodiments, the multichannel fluid connector 3 is another fluid connector for connecting other tubing.

The following describes a method of using the multichannel fluid connector 3:

when combining, the external pipe 16 is first connected to the conduit 17 by means of the squeeze joint 23; then, the first sealing ring 11 and the second sealing ring 15 are installed, and a proper amount of lubricating oil is smeared on the boss 8 and the male head 12 so as to be convenient for insertion; then the guide post 25 is aligned with the guide hole 24, the male part 6 is slowly pushed to be inserted into the female part 7, the first sealing ring 11 and the second sealing ring 15 are prevented from being damaged by excessive force, and if a gap exists between the male part 6 and the female part 7 and cannot be attached, a gasket 28 with proper thickness is selected for adjustment; finally, the male part 6 and the female part 7 are locked by means of bolts 26.

When the male part 6 is disassembled, the bolt 26 is first removed, and the male part 7 is then pulled out.

As can be seen from the above-mentioned use method, when the multichannel fluid connector 3 is used for connection, the external pipeline 16 is connected with the two halves 6 and 7, then the two halves 6 and 7 are combined, and all the external pipelines 16 can be connected by one insertion, so that the operation difficulty is reduced, the assembly efficiency is improved, and in addition, the assembly deformation and stress generated by connecting the single external pipeline 16 one by one in sequence are avoided by one insertion connection of all the external pipelines 16.

Although the invention has been described in terms of embodiments, it is not intended to be limited thereto, and variations and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention.

Claims

1. A multi-channel fluid connector comprising separable halves, each of said halves having a plurality of plug connectors for plug communication when said halves are joined;

2. The multi-channel fluid connector of claim 1, wherein one of the two halves is a male portion and the other half is a female portion, the male portion being inserted into the female portion for a plug-in connection.

3. The multi-channel fluid connector of claim 2, wherein the plug connector of one of the halves is a male connector and the plug connector of the other half is a female connector, the male connector being inserted into the female connector for plug-in communication.

4. The multi-channel fluid connector of claim 2, wherein the mating of the male portion and the female portion is sealed by a first seal ring;

the plug of the plug connector is sealed through a second sealing ring.

5. The multi-channel fluid connector of claim 1, wherein each of said halves further has a plurality of chambers separated from each other, each of said conduits communicating with said plug connector through said chambers;

6. The multi-channel fluid connector of claim 1, wherein each of said conduits of each of said halves extends outwardly away from an end of said outer tube.

7. The multi-channel fluid connector of claim 1, wherein each of the conduits connects to the external tubing via a squeeze joint.

8. The multi-channel fluid connector of claim 1, wherein one of the two halves has a guide hole and the other has a guide post, the mating of the guide hole and the guide post being used to guide the two halves together.

9. The multi-channel fluid connector of claim 1, further comprising a bolt, the two halves having a bolt through hole for the bolt to pass through, the combination of the two halves being locked by the bolt.

10. The multi-channel fluid connector of claim 1, further comprising a spacer that is clamped by the two halves when the two halves are joined to adjust the distance between the two halves.

11. The multi-channel fluid connector of claim 1, wherein the multi-channel fluid connector is an aircraft engine fluid connector for a hybrid connection of a fuel line and a lubricant line.