KR102091618B1 - Method and apparatus for adjusting the flow rate of air vehicle fuel system using orifice plate - Google Patents

Abstract

A method of adjusting the flow rate of a vehicle fuel system using an orifice plate according to an embodiment includes a front pipe, a rear pipe provided parallel to the front pipe, and an orifice hole provided between the front pipe and the rear pipe. Using an orifice plate having a orifice plate provided, a sleeve surrounding the front pipe, the rear pipe and the orifice plate, and a cover fastened to the sleeve to prevent the sleeve from being released from the front pipe and the rear pipe It is a method of adjusting the flow rate through a device for adjusting the flow rate, and detecting the flow characteristics inside the rear pipe; Determining whether the sensed flow characteristic satisfies a target flow characteristic; Separating the cover from the sleeve; Releasing the sleeve from the front and rear piping; And replacing the orifice plate in consideration of the sensed flow characteristics and target flow characteristics.

Description

METHOD AND APPARATUS FOR ADJUSTING THE FLOW RATE OF AIR VEHICLE FUEL SYSTEM USING ORIFICE PLATE

The description below relates to a method and apparatus for regulating the flow rate of an aircraft fuel system using an orifice plate.

The first step in the process of developing a fuel system for a vehicle that provides thrust to an engine using aviation fluid is to calculate the pressure loss of the fuel pipe and calculate the flow rate of the pump to supply it to the engine. . If this is not done properly, it will have a significant impact on ground and flight testing. In the early stages of aircraft fuel system design, if it is not properly designed, the impact on overall schedule and performance can be considered to be very significant. If you are unsatisfied with the performance of the fuel system of the target aircraft, you will need to redo the design from scratch. If the performance is not satisfied after a lot of design has already been done, it may be problematic for reliability and safety to apply directly to an aircraft that is actually mounted, since it is constantly imminent and additionally required to perform a failure investigation.

To overcome this, by manufacturing orifices of various sizes to fit the size and thickness of the pipes using the existing installed couplings, and installing them in the pipes, the flow characteristics of the fuel system for an aircraft are displayed as intended, and then flow The characteristic is to supply the engine or fuel tank at the desired flow and pressure from the pump outlet.

The purpose of one embodiment is to design a fuel system for all airborne or non-aircraft aircraft that provide thrust to the engine using aviation fluid, and if the originally intended flow characteristics are not satisfied, the fuel system is utilized by using coupling. It is to provide a method and apparatus for controlling the flow rate of an aircraft fuel system by using an orifice plate to optimize flow characteristics of a fuel system by manufacturing and applying various orifices for each pipe size.

In addition, the purpose of one embodiment is applied to each of the different flow characteristics of the flow characteristics are different flow characteristics, to provide a method and apparatus for controlling the flow rate of the air vehicle fuel system using an orifice plate, to optimize the flow characteristics of the fuel system will be.

A method of adjusting the flow rate of a vehicle fuel system using an orifice plate according to an embodiment includes a front pipe, a rear pipe provided parallel to the front pipe, and an orifice hole provided between the front pipe and the rear pipe. Using an orifice plate having a orifice plate provided, a sleeve surrounding the front pipe, the rear pipe and the orifice plate, and a cover fastened to the sleeve to prevent the sleeve from being released from the front pipe and the rear pipe It is a method of adjusting the flow rate through a device for adjusting the flow rate, and detecting the flow characteristics inside the rear pipe; Determining whether the sensed flow characteristic satisfies a target flow characteristic; Separating the cover from the sleeve; Releasing the sleeve from the front and rear piping; And replacing the orifice plate in consideration of the sensed flow characteristics and target flow characteristics.

The step of replacing the orifice plate may include the step of replacing the orifice plate with a different size of the orifice hole.

The step of sensing the flow characteristics includes measuring the flow rate or pressure of the rear pipe, and replacing the orifice plate, when the measured flow rate or pressure is smaller than the target flow rate or pressure, the size of the orifice hole May include replacing with a relatively large orifice plate.

The orifice plate may be fixed between the front pipe and the rear pipe in a manner of making surface contact with each of the front pipe and the rear pipe.

An apparatus for adjusting the flow rate of an aircraft fuel system using an orifice plate according to an embodiment includes: a front pipe for guiding a fluid; A rear pipe provided in parallel with the front pipe and guiding the fluid transferred from the front pipe; A sleeve surrounding the front pipe and the rear pipe; A cover fastened to the sleeve to prevent the sleeve from being released from the front pipe and the rear pipe; And an orifice hole for transferring the fluid guided by the front pipe to the rear pipe, fixed between the front pipe and the rear pipe in contact with the front pipe and the rear pipe, and inside the sleeve. It may include an orifice plate located on.

The orifice plate can be replaced with the positions of the front pipe and the rear pipe fixed.

The diameter of the orifice hole may be smaller than the inner diameter of the front pipe.

The apparatus for adjusting the flow rate of the air vehicle fuel system using the orifice plate may be provided inside the rear pipe, and may further include a flow sensor for measuring the flow rate of the fluid passing through the orifice plate.

The apparatus for adjusting the flow rate of the air vehicle fuel system using the orifice plate may be further provided in the rear pipe and further include a pressure sensor for measuring the pressure of the fluid passing through the orifice plate.

The diameter of the orifice plate may be the same as the inner diameter of the sleeve.

The orifice plate may be in surface contact with each of the front pipe and the rear pipe.

According to a method and apparatus for controlling the flow rate of a vehicle fuel system using an orifice plate according to an embodiment, the flow characteristics of the fuel system of all airborne aircrafts providing thrust to the engine using aviation fluid are derived according to a desired design By using an orifice for coupling, an initial design error can be made, reducing the cost and schedule for re-testing, and the number of related components except the orifice plate with the orifice need not be changed. And, it is possible to obtain a technical effect of increasing reliability and safety.

The following drawings attached to this specification illustrate one preferred embodiment of the present invention, and serve to further understand the technical spirit of the present invention together with the detailed description of the present invention, so the present invention is limited to those described in those drawings. It should not be interpreted as limited.
1 is an exploded perspective view of an apparatus for adjusting the flow rate of an air vehicle fuel system using an orifice plate according to an embodiment.
2 is a perspective view showing a state in which a device for adjusting the flow rate of an air vehicle fuel system using an orifice plate according to an embodiment is assembled.
3 is a perspective view illustrating a state in which the cover and the sleeve are separated in FIG. 2.
4 is a front view of an orifice plate with orifice holes of different sizes, respectively.
5 is a block diagram of an apparatus for adjusting the flow rate of an air vehicle fuel system using an orifice plate according to an embodiment.
6 is a flow chart of a method for adjusting the flow rate of an air vehicle fuel system using an orifice plate according to an embodiment.

Hereinafter, embodiments will be described in detail through exemplary drawings. It should be noted that in adding reference numerals to the components of each drawing, the same components have the same reference numerals as possible even though they are displayed on different drawings. In addition, in describing the embodiments, when it is determined that detailed descriptions of related well-known configurations or functions interfere with understanding of the embodiments, detailed descriptions thereof will be omitted.

In addition, in describing the components of the embodiment, terms such as first, second, A, B, (a), and (b) may be used. These terms are only for distinguishing the component from other components, and the nature, order, or order of the component is not limited by the term. When a component is described as being "connected", "coupled" or "connected" to another component, that component may be directly connected to or connected to the other component, but another component between each component It should be understood that may be "connected", "coupled" or "connected".

Components included in any one embodiment and components including a common function will be described using the same name in other embodiments. Unless there is an objection to the contrary, the description described in any one embodiment may be applied to other embodiments, and a detailed description will be omitted in the overlapped range.

1 is an exploded perspective view of an apparatus for adjusting the flow rate of an air vehicle fuel system using an orifice plate according to an embodiment.

Referring to FIG. 1, an apparatus for controlling the flow rate of a vehicle fuel system using an orifice plate (hereinafter referred to as a flow rate control device) is an orifice plate 19 when the designed fuel system does not satisfy the originally intended flow characteristics. It is possible to optimize the flow characteristics by replacing and mounting. The flow control device includes a front pipe 11, a front o-ring 12, a rear pipe 13, a rear o-ring 14, a sleeve 15, a cover 16, a pressure sensor 17, and a flow sensor 18 And orifice plate 19.

The front pipe 11 can guide the fluid. The front pipe 11 may communicate with other pipes (not shown) provided in the front. The front pipe 11 may be mounted on the front plate 91, for example. The front pipe 11 may include a front pipe body 111 and a front pipe head 112. The space between the front pipe body 111 and the front pipe head 112 is recessed to accommodate at least a portion of the front O-ring 12 described later.

The front O-ring 12 may surround the outer wall of the front pipe 11 and seal between the front pipe 11 and the sleeve 15. The front o-ring 12 may assist in preventing fluid from flowing out between the front pipe 11 and the sleeve 15.

The rear pipe 13 is provided side by side with the front pipe 11 and can guide the fluid delivered from the front pipe. The rear pipe 13 may communicate with the front pipe 11. The rear piping 13 may include a rear piping body 131 and a rear piping head 132. The space between the rear pipe body 131 and the rear pipe head 132 is recessed to accommodate at least a portion of the rear O-ring 14 described later.

The rear O-ring 14 may surround the outer wall of the rear pipe 13 and seal between the rear pipe 13 and the sleeve 15. The rear O-ring 14 may assist in preventing fluid from flowing out between the rear pipe 13 and the sleeve 15.

The sleeve 15 may wrap the front pipe 11 and the rear pipe 13. The sleeve 15 may include, for example, two segment members provided detachably from each other. For example, the user is in contact with the outer surfaces of the front pipe 11 and the rear pipe 13, one of the two segment members, the other segment member to the one of the segment members Can be mounted. The sleeve 15 can be, for example, a thin metal or plastic plate. The sleeve 15 is deformable to some extent. The sleeve 15 may be mounted outside the front pipe 11 and the rear pipe 13, and may be released from the front pipe 11 and the rear pipe 13. For example, the user can release the sleeve 15 in a manner that separates the two segment members from each other.

The cover 16 can be fastened to the sleeve to prevent the sleeve 15 from being released from the front pipe 11 and the rear pipe 13. For example, the cover 16 may include a cover body 161, a cover fastening clasp 162 and a cover hinge 163. The cover body 161 may be provided in a plurality of segmented structures. The plurality of segment structures constituting the cover body 161 may be rotatable with each other around the cover hinge 163. For example, the cover 16 is shown as having a ring shape forming a closed curve, but both sides of the cover body 161 around the cover hinge 163 may be rotated to open each other. The user may bring the cover body 161 toward the sleeve 15 with the cover body 161 open, and then the cover body 161 may surround the sleeve 15 to be cheap. The user can restrain a plurality of segment structures from each other by using the cover fastening clasp 162. For example, the cover fastening clasp 162 may be provided on any one of the plurality of segment structures, and may have a structure that is applied to the other segment structures that are spaced apart. When the cover 16 is fastened, the sleeve 15 is not released from the front pipe 11 and the rear pipe 13, and can be kept firmly fixed to the front pipe 11 and the rear pipe 13 .

The pressure sensor 17 is provided inside the rear pipe 13 and can measure the pressure of the fluid passing through the orifice plate 19. Based on the pressure information measured by the pressure sensor 17, the user can determine whether the current system's flow characteristics are desired flow characteristics. For example, when a value lower than the target pressure value is measured by the pressure sensor 17, the user is transferred from the front pipe 11 to the rear pipe 13 by increasing the flow rate by replacing the orifice plate 19 The amount of fluid can be increased, thereby increasing the pressure inside the rear pipe (13).

The flow sensor 18 is provided inside the rear pipe 13 and can measure the flow rate of the fluid passing through the orifice plate 19. The user may determine whether the current system's flow characteristic is a desired flow characteristic based on the flow rate information measured by the flow sensor 18. For example, when a value lower than the target flow value is measured by the flow sensor 18, the user replaces the orifice plate 19 to determine the flow rate of the fluid delivered from the front pipe 11 to the rear pipe 13. Can be increased.

The orifice plate 19 may have an orifice hole for transferring a portion of the fluid guided by the front pipe 11 to the rear pipe. The orifice plate 19 may determine the amount of fluid transferred from the front pipe 11 to the rear pipe 13. The orifice plate 19 may be fixed between the front pipe 11 and the rear pipe 13 in contact with the front pipe 11 and the rear pipe 13. The orifice plate 19 may be located inside the sleeve 15. One surface of the orifice plate 19 may be in surface contact with the front piping head 112 of the front piping 11, and the other surface may be in front of the rear piping head 132 of the rear piping 13, in front of the front piping ( 11) and the rear pipe (13). The size of the diameter of the orifice plate 19 may be the same as the size of the inner diameter of the sleeve 15. According to this structure, the orifice plate 19 can be fixed inside the sleeve 15. In other words, the orifice plate 19 may be fixed between the front pipe 11 and the rear pipe 13 in a state where the longitudinal movement of the pipe and / or the radial movement of the pipe is limited.

The orifice plate 19 is replaceable. The user may satisfy a target flow characteristic by replacing the orifice plate 19 according to the situation while having a plurality of orifice plates including orifice holes having different diameters.

The diameter of the orifice hole may be smaller than the inner diameter of the front pipe 11. According to such a structure, the fluid guided by the front pipe 11 may pass through the orifice hole and be directly transferred to the rear pipe 13. The flow rate and pressure of the fluid flowing through the rear pipe 13 may be determined according to the diameter of the orifice hole.

2 is a perspective view showing a state in which a device for adjusting the flow rate of a vehicle fuel system using an orifice plate according to an embodiment is assembled, and FIG. 3 is a perspective view showing a state in which the cover and the sleeve are separated in FIG. 2. .

2 and 3, the front pipe 11 and the rear pipe 13 communicate with each other, and the front pipe 11 and the rear pipe 13 are fastened by a sleeve 15 and a cover 16 It is done. A front structure 92 for transferring fluid to the front pipe 11 may be provided in front of the front pipe 11. For example, the front structure 92 may be other piping or pumps. The front plate 91 can fix the front pipe 11 to the front structure 92.

The orifice plate 19 may be sandwiched between the front pipe 11 and the rear pipe 13. The orifice plate 19 may be in surface contact with each of the front pipe 11 and the rear pipe 13. Due to this structure, the user can easily repair or replace the orifice plate 19 simply without changing the position of the pipings 11 and 13 constituting the system. Hereinafter, a method of replacing the orifice plate 19 will be described in detail.

First, when the user wants to replace the orifice plate 19 for some reason, the user removes the cover 16 and releases the sleeve 15, thereby allowing the sleeve 15 and the cover 16 to be front pipe 11 And it can be separated from the rear pipe (13). For example, the reasons may include resizing the orifice hole and / or replacement due to damage to the orifice plate. When the sleeve 15 and the cover 16 are separated from the front pipe 11 and the rear pipe 13, the orifice plate 19 in the surface contact with the front pipe 11 and the rear pipe 13 is the It can slide in a direction perpendicular to the longitudinal direction (ie, in the radial direction). While the orifice plate 19 is sliding between the front pipe 11 and the rear pipe 13, the positions of the front pipe 11 and the rear pipe 13 may not be changed. The user can push the new orifice plate 19 in a sliding manner between the front pipe 11 and the rear pipe 13. When the orifice plate 19 is located between the front pipe 11 and the rear pipe 13, the user wraps the front pipe 11 and the rear pipe 13 with the sleeve 15, and covers the sleeve 15 (16).

4 is a front view of an orifice plate with orifice holes of different sizes, respectively.

Referring to Figure 4, the user can prepare a plurality of orifice plates (19a, 19b, 19c). For example, the plurality of orifice plates 19a, 19b, and 19c may include a first orifice plate 19a, a second orifice plate 19b, and a third orifice plate 19c.

The first orifice plate 19a has a first orifice hole 191a of a first diameter d1, and the second orifice plate 19b has a second orifice hole 191b of a second diameter d2. And, the third orifice plate 19c may include a third orifice hole 191c having a third diameter d3. The second diameter d2 may be larger than the first diameter d1, and the third diameter d3 may be larger than the second diameter d2. The user can appropriately replace the orifice plate so that the measured current flow characteristics are close to the target flow characteristics.

5 is a block diagram of an apparatus for adjusting the flow rate of a vehicle fuel system using an orifice plate according to an embodiment, and FIG. 6 is a method of controlling a flow rate of a vehicle fuel system using an orifice plate according to an embodiment It is a flowchart.

5 and 6, a method of adjusting the flow rate of the air vehicle fuel system using an orifice plate (hereinafter referred to as a flow rate adjustment method) is a method of controlling the flow rate based on the flow rate adjustment device described above. For convenience of explanation, the same reference numerals as previously used will be used.

The flow control device may further include a control unit 81 and a display 82. The control unit 81 may receive the pressure and / or flow rate information measured from the pressure sensor 17 and / or the flow rate sensor 18, and transmits the received pressure and / or flow rate information to the display 82 to visualize Can be delivered to the user. For example, the control unit 81 may include a data acquisition system. The control unit 81 may be connected to the display 82 through a TCP / IP (wired LAN) or wireless communication. The user can replace the orifice plate 19 based on the information displayed on the display 82.

The flow adjustment method includes: sensing the flow characteristics of the pipe (S110), determining whether the sensed flow characteristics satisfy the target flow characteristics (S120), and separating the cover from the sleeve (S130). , It may include the step of releasing the sleeve from the front pipe and the rear pipe (S140), and replacing the orifice plate in consideration of the sensed flow characteristics and target flow characteristics (S150).

In step S110, the pressure sensor 17 and / or the flow sensor 18 can detect the flow characteristics of the pipe. For example, the pressure sensor 17 and / or the flow sensor 18 may be mounted inside the rear pipe 13 to measure the pressure and / or flow rate of the fluid flowing through the rear pipe 13.

In step S120, the control unit 81 or the user may determine whether the sensed flow characteristic satisfies the target flow characteristic. For example, the control unit 81 may determine whether the sensed flow characteristics (pressure and / or flow rate) satisfy the target flow characteristics, and display the determined result values on the display 82. As another example, the control unit 81 displays the sensed flow characteristics (pressure and / or flow rate) on the display 82, and the user determines whether the sensed flow characteristics satisfy the target flow characteristics based on the displayed information. You can.

In step S120, if the sensed flow characteristic satisfies the target flow characteristic, the user does not need to replace the orifice plate 19 with another orifice plate. On the other hand, in step (S120), if the sensed flow characteristics do not satisfy the target flow characteristics, it may be skipped to steps (S130) to step (S150) described below.

In step S130, the user can remove the cover 16 from the sleeve 15. For example, after the user deforms the cover body 161 by separating the cover fastening clasp 162, the user can detach the cover 16 from the sleeve 15.

In step S140, the user can release the sleeve 15 from the front pipe 11 and the rear pipe 13. For example, the user can release the segment members constituting the sleeve 15 from each other.

In step S150, the user may replace the orifice plate in consideration of the sensed flow characteristics and target flow characteristics. For example, if the pressure and / or flow rate measured by the pressure sensor 17 and / or the flow sensor 18 is greater than the target pressure and / or flow rate, the user may orifice plate 19 having a relatively small orifice hole diameter. The orifice plate can be replaced. As another example, when the pressure and / or flow rate measured by the pressure sensor 17 and / or the flow sensor 18 is smaller than the target pressure and / or flow rate, the user moves to the orifice plate 19 having a relatively large orifice hole diameter. The orifice plate can be replaced.

According to this flow control method, it is possible to derive the flow characteristics of the fuel system of any airborne aircraft that provides thrust to the engine by using aviation fluid as desired, and by using an orifice for coupling, an initial design error is avoided. It is possible to reduce the cost and schedule used for retesting, and not to change many related components except the orifice plate having the orifice, which in turn can reduce the overall system cost and increase the reliability and safety.

As described above, although the embodiments have been described by the limited drawings, those skilled in the art can make various modifications and variations from the above description. For example, the described techniques may be performed in a different order than the described method, and / or components such as the structure, device, etc. described may be combined or combined in a different form from the described method, or may be applied to other components or equivalents. Even if replaced or substituted by, appropriate results can be achieved.

Claims (11)

A front pipe, a rear pipe provided side by side with the front pipe, an orifice plate provided between the front pipe and the rear pipe, and having an orifice hole; and a sleeve surrounding the front pipe, the rear pipe and the orifice plate, and In order to prevent the sleeve from being released from the front pipe and the rear pipe, in the method of adjusting the flow rate through the device for adjusting the flow rate using an orifice plate including a cover fastened to the sleeve,
Sensing flow characteristics inside the rear pipe;
Determining whether the sensed flow characteristic satisfies a target flow characteristic;
Separating the cover from the sleeve;
Releasing the sleeve from the front and rear piping; And
Replacing the orifice plate in consideration of the sensed flow characteristics and target flow characteristics;
Including,
The sleeve includes two segment members that are detachably provided to each other, and the sleeve is deformable,
The cover includes a cover body provided with a plurality of segment structures rotatable relative to each other, and a cover fastening clasp having a structure provided on any one segment structure of the plurality of segment structures and hanging on the other segment structure,
The orifice plate, in a state in which the sleeve and the cover are released, a method of adjusting the flow rate of the air vehicle fuel system using a sliding orifice plate in a surface contact with the front pipe and the rear pipe.
According to claim 1,
The step of replacing the orifice plate includes the step of replacing the orifice plate with a different size of the orifice hole, using the orifice plate to control the flow rate of the air vehicle fuel system.
According to claim 1,
The step of sensing the flow characteristics includes measuring a flow rate or pressure of the rear pipe,
The step of replacing the orifice plate includes, when the measured flow rate or pressure is smaller than the target flow rate or pressure, replacing the orifice hole with a relatively large orifice plate, using the orifice plate to flow the air vehicle fuel system. How to regulate.
delete Front piping to guide the fluid;
A rear pipe provided in parallel with the front pipe and guiding the fluid transferred from the front pipe;
A sleeve surrounding the front pipe and the rear pipe;
A cover fastened to the sleeve to prevent the sleeve from being released from the front pipe and the rear pipe; And
It has an orifice hole for transferring the fluid guided by the front pipe to the rear pipe, and is fixed between the front pipe and the rear pipe in a state in contact with the front pipe and the rear pipe, and inside the sleeve. Positioned orifice plate;
Including,
The sleeve includes two segment members that are detachably provided to each other, and the sleeve is deformable,
The cover includes a cover body provided with a plurality of segment structures rotatable relative to each other, and a cover fastening clasp having a structure provided on any one segment structure of the plurality of segment structures and hanging on the other segment structure,
The orifice plate is a device for adjusting the flow rate of a vehicle fuel system using an orifice plate that is slidable in a state of being in surface contact with the front pipe and the rear pipe while the sleeve and the cover are released.
The method of claim 5,
The orifice plate is a device for adjusting the flow rate of the air vehicle fuel system using an orifice plate, which can be replaced with the positions of the front pipe and the rear pipe fixed.
The method of claim 5,
The diameter of the orifice hole is smaller than the inner diameter of the front pipe, using the orifice plate to control the flow rate of the aircraft fuel system.
The method of claim 5,
Device provided on the inside of the rear pipe, further comprising a flow sensor for measuring the flow rate of the fluid passing through the orifice plate, using the orifice plate to control the flow rate of the aircraft fuel system.
The method of claim 5,
Device provided in the rear pipe, further comprising a pressure sensor for measuring the pressure of the fluid passing through the orifice plate, using the orifice plate to adjust the flow rate of the aircraft fuel system.
The method of claim 5,
The diameter of the orifice plate is the same as the inner diameter of the sleeve, using the orifice plate to adjust the flow rate of the aircraft fuel system.
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