KR20110072716A - Apparatus for regulating concentricity of pipe and system having the same - Google Patents

Abstract

PURPOSE: A device for regulating concentricity of pipes and a system for minimizing fluid loss comprising the same are provided to prevent interference between different diameters of two pipes and maintain concentricity when the pipes are connected. CONSTITUTION: A device for regulating concentricity of pipes comprises a ball caster, a ball-caster support(120) and an oil-pressure supply unit(130). The ball caster is makes contact with the outer circumferential surface of a pipe and presses the pipe. The ball-caster support supports the ball caster and transfers oil pressure to the ball caster. The oil-pressure supply unit is connected to the ball-caster support and generates oil pressure.

Description

Apparatus for Regulating Concentricity of Pipe and System having the Same}

The present invention relates to a pipe concentricity adjusting device and a fluid loss minimization system including the same, and specifically to pressurize a ball caster that supports the pipe remotely and to adjust the concentricity of the pipe through this and prevent interference between the pipes. It relates to a pipe concentricity adjustment apparatus and a fluid loss minimization system including the same.

A gas turbine is a high temperature that comes out by compressing air and supplying it into a closed container and then injecting fuel to burn it. It is a device that obtains rotational force by using high pressure combustion gas to inject to the blade of the turbine which is a rotating body. Advantages of such a gas turbine are that they are easy to install, can be made compact and lightweight, can easily cope with load fluctuations, and are widely used due to their low initial cost per unit power generated.

For more detailed description, FIG. 1 is presented. 1 is a cross-sectional view showing a state of a general gas turbine.

As shown therein, the gas turbine engine 1 is a kind of rotary internal combustion engine, and is an engine which expands the combustion gas of high temperature and high pressure and turns the turbine 13 to obtain rotational force. That is, the air whose pressure rises due to dynamic pressure is increased again by the compressor 11 and made into a hot gas of about 800 to 1200 ° C. in the combustion chamber 12, and then until the required pressure ratio to obtain the required output of the compressor 11. The propulsion force is obtained by expanding in the turbine 13 and blowing the gas at high speed through the jet nozzle 14 at the remaining pressure.

The gas turbine engine 1 usually operates at high altitudes and thus is directly affected by temperature, pressure and density due to changes in altitude. At high altitudes, the temperature, pressure, and density of the atmosphere is much lower than at ground level, so gas turbine engines operating in these high altitude environments vary aerodynamically and thermodynamically in response to changes in external pressure and temperature. Will be different. When the gas turbine engine (1) is mounted on a real vehicle and tested for performance, it takes a lot of cost and time to verify the performance of the engine. More widely used.

The high altitude engine test facility is designed for this purpose. It is possible to measure the force, pressure, temperature, vibration, and flow rate from hundreds to thousands of sensors mounted for the aerodynamic, thermodynamic, and structural performance analysis of the gas turbine engine (1). It is a facility to measure the performance, operability and reliability of the engine by measuring, analyzing and evaluating it.

In order to measure the main performance of the gas turbine engine (1) such as air flow rate, thrust, and fuel consumption rate by using the high altitude engine test facility, prior to the measurement, minimizing the mounting loss due to the engine installation in the test facility and inlet piping And alignment should be preceded.

In the current high altitude engine test facility, the inlet pipe structure uses an inlet seal to minimize the force on the thrust when connecting the engine inlet pipe and the air supply pipe of different diameter, and the Teflon seal method is used. The pressure is measured before and after the Teflon Seal to check for any abnormality of the seal. An expansion joint is installed between the engine and the inlet seal to minimize the transfer of horizontal and vertical movement of the engine except rotational and axial directions. The distance between the two pipes is measured by a displacement sensor, allowing concentricity to be checked before, after and during the high-altitude environment test in real time on the FCS (Facility Control System) screen.

If the contract between the engine inlet pipe and the air supply pipe is confirmed by the displacement sensor before simulating the inlet Mach number and altitude condition (before performing the high altitude test), the operator should adjust the engine inlet pipe to improve the concentricity. It was used to maintain. However, during the process of setting high-environmental test conditions or during the engine test, interference between the two pipes is often observed due to the influence of the engine's rotation, axial movement, and partial thermal expansion of the engine. The effects of friction not only directly affect thrust measurements, but also affect the calculation of fuel consumption.

One object according to an embodiment of the present invention for solving the above problems is to prevent the interference between pipes in connecting two pipes of different diameters in advance and to maintain the concentricity pipe concentricity adjusting device and a fluid comprising the same To provide a loss minimization system.

Another object according to an embodiment of the present invention is to provide a pipe concentricity adjusting device and a fluid loss minimization system including the same that can remotely adjust the concentricity of the pipe before and after the fluid flow into the pipe occurs.

In addition, an object according to an embodiment of the present invention, in the case of the gas turbine engine test, by maintaining the concentricity of the two pipes to significantly reduce the effect of friction during the thrust measurement, which is the main performance of the gas turbine engine to enable accurate measurement To provide a pipe concentricity adjusting device and a fluid loss minimization system including the same.

According to a preferred embodiment of the present invention for achieving the above objects, the pipe concentricity adjusting apparatus of the present invention, the ball caster in contact with the outer circumferential surface of the pipe and pressurizes the pipe in the radial direction, the ball caster to support the hydraulic pressure to the ball caster It includes a ball caster support for transmitting a, and a hydraulic supply connected to the ball caster support to generate the hydraulic pressure, by controlling the degree of pressurization of the ball caster is characterized in that to adjust the concentricity of the pipe and to support the fixed pipe.

Preferably, the ball caster is provided with a plurality, the plurality of ball casters to support at least three points or more of the outer peripheral surface located on the same plane perpendicular to the longitudinal direction of the pipe.

The plurality of ball casters are preferably arranged to be spaced apart at the same angle.

Preferably, other sizes of hydraulic pressure may be supplied to the plurality of ball casters.

Pipe concentricity adjustment device may further include a displacement sensor and the control unit, the displacement sensor is attached to the pipe to measure the degree of interference between the pipe, the control unit receives the information from the displacement sensor to supply the hydraulic pressure supplied to the ball caster To control.

The fluid loss minimization system according to the present invention includes a fluid supply pipe into which a working fluid is introduced, an engine inlet duct connected to the fluid supply pipe and having a different diameter from the fluid supply pipe, and a connection between the fluid supply pipe and the engine inlet duct. Concentricity adjustment module for adjusting the concentricity of the part.

The concentricity adjusting module is a ball caster that radially presses the engine inlet duct in contact with the outer circumferential surface of the engine inlet duct at a position where the engine inlet duct is connected to the air supply pipe, and supports the ball caster and transfers hydraulic pressure to the ball caster. And a ball caster support part, and a hydraulic supply part connected to the ball caster support part to generate hydraulic pressure, thereby controlling the degree of pressurization of the ball caster to adjust concentricity of the pipe and fix and support the pipe.

Preferably, at least three ball casters support the outer circumferential surface of the engine inlet duct, and different sizes of hydraulic pressure may be supplied to the plurality of ball casters to adjust the concentricity of the engine inlet duct.

Hydraulic supply unit, a hydraulic tank for storing the hydraulic oil, a hydraulic pump connected to the hydraulic tank to apply pressure to the hydraulic oil, a hydraulic cylinder connected to the hydraulic pump to provide the hydraulic fluid to the ball caster, the hydraulic cylinder and the hydraulic tank, or the A valve disposed between the hydraulic cylinder and the hydraulic pump, and an accumulator positioned between the pipe to which the hydraulic fluid moves to control the pulsation in the pipe.

Preferably, the fluid loss minimization system may further include a displacement sensor and a control unit, wherein the displacement sensor is installed in at least one of the fluid supply pipe or the engine inlet duct and measures the degree of interference between the fluid supply pipe and the engine inlet duct. The control unit is connected to the displacement sensor and the hydraulic supply unit to receive the displacement information from the displacement sensor to control the hydraulic pressure supplied to the ball caster.

Preferably, the end of the ball caster support portion is projected to the engine inlet duct side through the fluid supply pipe is fixed, the ball caster provided on the end surface of the ball caster support portion is in contact with the outer peripheral surface of the engine inlet duct.

Pipe concentricity adjusting device and a fluid loss minimization system including the same according to an embodiment of the present invention has the effect of preventing the interference between the pipes in advance and maintain the concentricity in connecting two pipes of different diameters.

In addition, according to the pipe concentricity adjusting apparatus and the fluid loss minimization system including the same according to an embodiment of the present invention, there is an effect that can be adjusted remotely the concentricity of the pipe not only before or after the fluid flow into the pipe. .

And, according to the pipe concentricity adjusting device and the fluid loss minimization system including the same according to an embodiment of the present invention, in the case of the gas turbine engine test, friction during the measurement of the thrust which is the main performance of the gas turbine engine by maintaining the concentricity of the two pipes The effect of drastically reducing the effects of the measurement is possible.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited or limited by the embodiments. For reference, the same numbers in this description refer to substantially the same elements and can be described with reference to the contents described in the other drawings under the above-mentioned rules, and the contents which are judged to be obvious to the person skilled in the art or repeated can be omitted.

2 is a state diagram of the fluid supply pipe (P) and the engine inlet duct (D) in accordance with the present invention, Figure 3 is a cross-sectional view of the fluid loss minimization system 10 according to the line AA of Figure 2, Figure 4 3 is a cross-sectional view of the fluid loss minimization system 10 along line BB of FIG. 3, and FIG. 5 is a detailed view of the portion C of FIG.

The fluid loss minimization system 10 according to the present invention includes a fluid supply pipe P, an engine inlet duct D, a concentricity adjusting module 100, a displacement sensor 200, and a controller.

The working fluid is introduced through the fluid supply pipe P, and for example, one end of the fluid supply pipe P may be connected to the main pipe to allow air to flow from the main pipe.

The other end of the fluid supply pipe (P) is connected to the engine inlet duct (D), the engine inlet duct (D) may be directly connected to the engine. The engine inlet duct D has a different diameter from the fluid supply pipe P. A Teflon seal and an expansion joint may be used to connect the engine inlet duct D and the fluid supply pipe P.

The concentricity adjustment module 100 includes a ball caster 110, a ball caster support 120, and a hydraulic supply 130.

3 to 5, the ball caster 110 is located in the vicinity of the fluid supply pipe (P) and the engine inlet duct (D) is connected, in contact with the outer circumferential surface of the engine inlet duct (D) inlet It serves to pressurize the duct D radially. By such a ball caster 110, the concentricity of the engine inlet duct D can be adjusted.

The ball caster 110 is connected to and supported by the ball caster support 120. That is, the ball caster 110 is mounted at the end of the ball caster support 120, the hydraulic pressure is provided to the ball caster 110 through the ball caster support 120, the ball caster 110 is the engine inlet The hydraulic force is applied in the radial direction of the duct D.

The ball caster 110 and the ball caster support 120 may be provided in plurality. In this embodiment, as shown in FIG. 4, four ball caster supports 121, 122, 123, and 124 are provided, and the ball casters 110 are mounted at ends of the respective ball caster supports 121, 122, 123, and 124.

In the present exemplary embodiment, four ball casters 110 and ball caster supports 121, 122, 123, and 124 have been described as an example, but the number is not limited thereto. For example, the ball caster 110 is preferably provided with at least three or more so as to support the outer peripheral surface of the engine inlet duct (D). That is, when three or more ball casters 110 and the number of ball caster supports 120 supporting each of them are configured to correspond thereto, the concentricity adjustment of the engine inlet duct D is performed by the front of the cross section of the engine inlet duct D. Direction can be enabled.

The plurality of ball casters 110 may be spaced apart from each other at the same angle. That is, the plurality of ball casters 110 may be disposed on the outer circumferential surface located on the same plane perpendicular to the longitudinal direction of the engine inlet duct D, spaced at the same angle from each other. For example, when three ball casters 110 are provided, they may be disposed at 120 degrees apart from each other, and if four ball casters 110 are provided, they may be spaced apart from each other at 90 degrees apart.

As shown in FIG. 4, it is most preferable that four ball casters 110 be provided with a corresponding number of ball caster supports 121, 122, 123, and 124. The four ball casters 110 and the ball caster supports 121, 122, 123, and 124 are configured to support four points on the outer circumferential surface of the engine inlet duct D at 90 degree intervals from each other. By adjusting the hydraulic pressure applied to the four ball casters 110, the concentricity can be easily adjusted by moving the engine inlet duct D in a desired direction. By providing four ball casters 110 at an angle of 90 degrees, the engine inlet duct D can be easily moved in the left, right, and up and down directions.

The first ball caster support member 121 and the third ball caster support member 123 are vertically disposed symmetrically with respect to the center of the engine inlet duct D to perform vertical movement of the engine inlet duct D. The second ball caster support member 122 and the fourth ball caster support member 124 are disposed symmetrically with respect to the center of the engine inlet duct D to perform left and right movement of the engine inlet duct D. FIG.

The first ball caster support member 121 and the second ball caster support member 122 are connected to each other, and the third ball caster support member 123 and the fourth ball caster support member 124 are connected to each other. These ball caster support members 121, 122, 123, 124 are connected to the hub member 125, and the hub member 125 is connected to the hydraulic supply unit 130. The ball caster support members 121, 122, 123, 124 and the hub member 125 are formed with a transfer path through which hydraulic fluid moves to provide hydraulic pressure.

When the connecting portion of the fluid supply pipe (P) and the engine inlet duct (D) overlap each other and surround the outer circumferential surface of the fluid supply pipe (P) dl engine inlet duct (D), the end of the ball caster support portion 120 is fluid It may protrude to the engine inlet duct D side through the supply pipe P. At this time, the ball caster 110 provided at the end of the ball caster support portion 120 is in contact with the outer peripheral surface of the engine inlet duct (D).

As shown in FIG. 5, the end of the first ball caster support member 121 penetrates through the fluid supply pipe P to allow the ball caster 110 to fix and support the outer circumferential surface of the engine inlet duct D. . Since the first ball caster support member 121 may be configured to be fixed to the fluid supply pipe P, the ball caster 110 presses only the engine inlet duct D to adjust its position, thereby providing a fluid supply pipe ( The relative concentricity adjustment between P) and the engine inlet duct D can be made possible.

The hydraulic pressure supply unit 130 includes a hydraulic tank 131, a hydraulic pump 132, a hydraulic cylinder 133, a valve 134, and an accumulator 135.

Referring to Figure 4, the hydraulic tank 131 is a container for storing the hydraulic oil, the hydraulic pump 132 is connected to the hydraulic tank 131 serves to apply pressure to the hydraulic fluid.

The hydraulic cylinder 133 is connected to the hydraulic pump 132 to provide pressurized hydraulic fluid to the ball caster 110 through the ball caster support 120. In detail, the hydraulic cylinder 133 is connected to the hub member 125 through a pipe, and the hydraulic oil pressurized through the hub member 125 is selectively selected from at least one of the first to fourth ball caster support members 121, 122, 123, and 124. Supplied to move the engine inlet duct D in the vertical or horizontal direction to adjust the concentricity.

A valve 134 is provided between the hydraulic cylinder 133 and the hydraulic tank 131, or between the hydraulic cylinder 133 and the hydraulic pump 132 to selectively adjust the flow or amount of the hydraulic oil.

An accumulator 135 may be provided at one side of the pipe through which the hydraulic fluid moves. The accumulator 135 serves to control the pulsation in the pipe.

The displacement sensor 200 is installed in at least one of the fluid supply pipe P and the engine inlet duct D to measure the degree of interference between the fluid supply pipe P and the engine inlet duct D. For example, as shown in Figure 2, the displacement sensor 200 is mounted on the engine inlet duct (D) side to measure the relative position between the engine inlet duct (D) and the fluid supply pipe (P).

A controller (not shown) may be provided between the displacement sensor 200 and the concentricity adjusting module 100. Specifically, the control unit is connected to the displacement sensor 200 and the concentricity adjustment module 100, respectively, the concentricity adjustment based on the position information of the fluid supply pipe (P) and the engine inlet duct (D) transferred from the displacement sensor (200) If it is determined that this is necessary, the concentricity is adjusted by controlling the hydraulic pressure supplied to the ball caster 110 to move the engine inlet duct D by the shifted position.

As described above, the fluid loss minimization system 10 according to an embodiment of the present invention simply goes through a method of checking for interference between two pipes through a displacement sensor, and flows between pipes through maintaining concentricity of two pipes. There is an effect that can minimize the loss of the fluid. For example, when connecting the fluid supply pipe (P) and the engine inlet duct (D) by the fluid loss minimization system 10 according to the present invention to measure the thrust which is the main performance of the gas turbine engine through maintaining concentricity, The effect of friction is greatly reduced and accurate measurement is possible.

As described above, although described with reference to the preferred embodiment of the present invention, those skilled in the art various modifications and variations of the present invention without departing from the spirit and scope of the invention described in the claims below I can understand that you can.

Included in this specification.

1 is a cross-sectional view showing a state of a general gas turbine.

2 is a state diagram of the coupling between the fluid supply pipe and the engine inlet duct according to the present invention;

3 is a sectional view of a fluid loss minimization system along line A-A in FIG. 2;

4 is a bottom view of the fluid loss minimization system along line B-B in FIG. 3;

FIG. 5 is a detailed view of portion C of FIG. 4.

<Description of the symbols for the main parts of the drawings>

10: fluid loss minimization system 100: concentricity adjustment module

110: ball caster 120: ball caster support

130: hydraulic supply unit 200: displacement sensor

P: Fluid supply piping D: Engine inlet duct

Claims (10)

In the positioning device for controlling the concentricity of pipes of different diameters, A ball caster in contact with an outer circumferential surface of the pipe and pressurizing the pipe in a radial direction; A ball caster support unit supporting the ball caster and transmitting hydraulic pressure to the ball caster; And A hydraulic pressure supply part connected to the ball caster support part and configured to generate hydraulic pressure; Includes, the concentricity of the pipes, characterized in that for controlling the degree of pressurization of the ball caster to adjust the concentricity of the pipe and fixedly support the pipe. The method of claim 1, The ball caster is provided with a plurality, the plurality of ball casters are pipe concentricity adjustment apparatus, characterized in that for supporting at least three points of the outer peripheral surface located on the same plane perpendicular to the longitudinal direction of the pipe. The method of claim 2, The plurality of ball casters are pipe concentricity adjusting device, characterized in that spaced at the same angle. The method of claim 2, A pipe concentricity adjusting device, characterized in that different sizes of hydraulic pressure can be supplied to the plurality of ball casters. The method according to any one of claims 1 to 4, A displacement sensor attached to the pipe and measuring a degree of interference between the pipes; And A control unit which receives the information from the displacement sensor and controls the hydraulic pressure supplied to the ball caster; Pipe concentricity adjusting device further comprising. A fluid supply pipe into which the working fluid flows; An engine inlet duct connected to the fluid supply pipe and having a different diameter from the fluid supply pipe; And A concentricity adjustment module for adjusting the concentricity of the connection portion between the fluid supply pipe and the engine inlet duct; Including, The concentricity adjustment module, A ball caster for radially pressing the engine inlet duct in contact with an outer circumferential surface of the engine inlet duct at a position where the engine inlet duct is connected to the air supply pipe; A ball caster support unit which supports the ball caster and transmits hydraulic pressure to the ball caster; And A hydraulic pressure supply part connected to the ball caster support part and configured to generate hydraulic pressure; And controlling the pressure of the ball caster to adjust concentricity of the pipe and to fix and support the pipe. The method of claim 6, At least three ball casters support the outer circumferential surface of the engine inlet duct, and different sizes of hydraulic pressure may be supplied to the plurality of ball casters to adjust the concentricity of the engine inlet duct. The method of claim 6, The hydraulic supply unit, A hydraulic tank for storing hydraulic fluid; A hydraulic pump connected to the hydraulic tank to apply pressure to the hydraulic oil; A hydraulic cylinder connected to the hydraulic pump to provide the hydraulic fluid to the ball caster; A valve disposed between the hydraulic cylinder and the hydraulic tank or between the hydraulic cylinder and the hydraulic pump; And An accumulator positioned between pipes through which the hydraulic fluid moves, and controlling an pulsation in the pipes; Fluid loss minimization system comprising a. The method according to any one of claims 6 to 8, A displacement sensor installed in at least one of the fluid supply pipe or the engine inlet duct, and measuring a degree of interference between the fluid supply pipe and the engine inlet duct; And A control unit connected to the displacement sensor and the concentricity adjustment module to control hydraulic pressure supplied to the ball caster by receiving displacement information from the displacement sensor; Fluid loss minimization system further comprising. The method of claim 6, Minimizing fluid loss, characterized in that the end of the ball caster support portion is projected to the engine inlet duct through the fluid supply pipe and fixed, the ball caster provided on the end surface of the ball caster support portion is in contact with the outer peripheral surface of the engine inlet duct. system.

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