KR101108741B1 - Sand and Dust Injection Apparatus for Gas Turbine Engine Test - Google Patents

Abstract

A sand and dust injector for testing gas turbine engines is disclosed. Sand and dust injection device for testing gas turbine engine according to the present invention includes a storage unit for storing sand and dust; A pump unit configured to discharge the sand and dust from the storage unit; And a high pressure air injector for injecting high pressure air into the sand and dust discharged by the pump unit and for transporting the sand and dust into the gas turbine engine. It is possible to perform sand and dust spray tests, and to verify the performance and durability of the engine when sand and dust containing sand or dust enter the gas turbine engine.

Sand and dust, sand dust, gas turbine engine, sand dust spray test

Description

Sand and Dust Injection Apparatus for Gas Turbine Engine Test

The present invention relates to a sand and dust injector for testing gas turbine engines, and more particularly, to a gas turbine engine capable of injecting a predetermined amount of sand and dust into the air entering the inlet of the gas turbine engine according to the purpose of the test. It relates to a test sand and dust injection device.

Gas turbine engines can introduce sand and dust as well as air to the engine inlet, depending on the operating environment. In order to minimize the inflow of sand and dust into the gas turbine engine, an attempt was made to minimize the inflow of sand and dust by installing a filter or particle separator at the inlet of the gas turbine engine.

However, despite such an attempt, sand and dust introduced into the gas turbine engine cannot be completely removed, and therefore, a turbine or blade of the engine collides with sand and dust, thereby causing damage.

Therefore, in the case where sand or dust is introduced into the gas turbine engine as described above, when sand or dust enters a certain amount of sand and dust into the gas turbine engine during the development stage of the gas turbine engine, the sand and dust are gas turbine engines. The impact on the system should be tested. In many cases, these tests are part of the gas turbine engine certification test and are therefore classified as one of the tests that must be performed during development.

For such a test, there is an increasing demand for a test apparatus that can inject a predetermined amount of sand or dust artificially into the air entering the gas turbine engine in accordance with the purpose of the test.

The present invention provides a gas and dust injection device for a gas turbine engine test that can inject a predetermined amount of sand and dust artificially into the inlet of the gas turbine engine.

The present invention provides a sand and dust injector for testing gas turbine engines that can be helpful in developing high performance and long life gas turbine engines.

According to an embodiment of the present invention for solving the above problems, a sand and dust injection apparatus for a gas turbine engine test for injecting sand and dust into the gas turbine engine, the storage unit for storing the sand and dust; A pump unit configured to discharge the sand and dust from the storage unit; And a high-pressure air injection unit for injecting high-pressure air into the sand and dust discharged by the pump unit, and for transporting the sand and dust into the gas turbine engine. to provide.

By constructing as above, it is possible to artificially inject the appropriate amount of sand and dust into the gas turbine engine, and analyze the effects of sand and dust on the gas turbine engine during the development stage of the gas turbine engine. Gas turbine engines can be developed that can be minimized.

Here, the storage unit includes a storage container having an accommodation space and the sand and dust is stored and connected to the lower portion of the storage container to connect the pump unit and the storage container, the discharge port toward the pump unit It may be formed in the shape of a cone that becomes narrower. That is, the sand and dust can be supplied to the pump portion more smoothly and continuously by passing through the cone-shaped outlet.

The pump unit may include a pump housing connected to the discharge port and a pump provided inside the pump housing, and the pump may include a hub having a rotating shaft in a central portion thereof and a plurality of wings formed on an outer circumferential surface of the hub. have. By using the pump unit configured as described above, sand and dust can be effectively sent to the high-pressure air injection unit, just like a watermill.

In this case, the pump housing may include a suction port connected to the discharge port, a pump receiving body connected to the suction port and receiving the pump and a discharge port formed in the pump receiving body to face the suction port.

In addition, the high pressure air injection unit may include a pressure vessel in which a discharge port communicating with the discharge port is formed at one end and connected to the discharge port, and a control valve connected to the discharge port to control the discharge of the high pressure air. . By controlling whether the high pressure air is discharged or the discharge pressure, the flow rate or flow rate mixed with sand and dust can be adjusted.

The discharge port and the discharge port may be in communication with the sand and dust injection tube connected to the pipe mounted at the inlet of the gas turbine engine. Here, the sand and dust spray tube is preferably formed in the form of a pipe having a relatively small diameter in order to increase the spraying effect.

The sand and dust injection tube allows the mixture of sand and dust and the high pressure air to pass through. For this purpose, the portion where the discharge port of the pump portion and the discharge port of the pressure vessel is communicated is preferably formed in the rear end side of the sand and dust injection tube.

On the other hand, one end of the sand and dust injection tube is preferably located in front of the inlet of the gas turbine engine. That is, the mixture of sand, dust, and high pressure air may be formed in front of the inlet of the gas turbine engine so as to be introduced into the gas turbine engine together with the air introduced through the inlet of the gas turbine engine.

One end of the rotating shaft may be connected to a drive motor, and the drive motor may be connected to a motor controller. This configuration can control the rotational speed of the pump and the amount of sand and dust flowing into the gas turbine engine.

The plurality of wings are disposed at equal intervals on the outer circumferential surface of the hub, the hub may rotate so that the sand and dust flows from the suction port toward the discharge port. The wings are arranged at equal intervals on the outer circumferential surface of the hub so that sand and dust can be supplied evenly.

According to the present invention, since a certain amount of sand and dust can be artificially injected into the inlet of the gas turbine engine, it is possible to grasp the influence of foreign matter on the gas turbine engine in the research and development stage.

The present invention can contribute to the development of a gas turbine engine that can minimize the effects of sand and dust.

The present invention can perform a test that can verify the performance or durability of the gas turbine engine in the situation where sand and dust is introduced into the gas turbine engine.

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.

1 is a view schematically showing a gas turbine engine and a gas turbine engine sand and dust injection device according to an embodiment of the present invention, Figure 2 is used in the gas turbine engine test sand and dust injection device according to FIG. 3 is a view showing a modification of the pump unit according to FIG. 2, and FIG. 4 is a view showing a driving structure of the pump unit according to FIG.

1 to 4, the sand and dust injector 100 for testing a gas turbine engine for injecting sand and dust into the gas turbine engine 110 according to an embodiment of the present invention is sand and dust (FO). Storage unit 120 for storing the high pressure air (140) and the sand and dust (FO) discharged by the pump unit 140 and the pump unit 140 to discharge the stored sand and dust (FO) from the storage unit 120 ( It includes a high-pressure air injection unit 160 for injecting the pressurized air (PA) to feed sand and dust (FO) into the gas turbine engine 110.

By configuring as described above, it is possible to artificially inject an appropriate amount of sand and dust (FO) in accordance with the test purpose of the gas turbine engine 110 into the gas turbine engine 110, which causes the gas turbine engine 110 By analyzing the effects of sand and dust (FO) on the gas turbine engine 110 in the development stage, it is possible to develop a gas turbine engine 110 that can minimize the effects of sand and dust (FO).

For example, considering the case where the gas turbine engine 110 is used in an aircraft, a foreign matter (FO) including not only sand and dust present on the runway but also mechanical parts such as bolts and nuts is not included in the gas turbine of the aircraft. Entering the engine 110 may damage the engine and cause the aircraft to crash. In order to solve this problem, a Foreign Object Damage (FOD) treatment team may be operated at the aerodrome.

The present invention describes a test apparatus for testing the effects of sand and dust on the gas turbine engine among these foreign matters.

Sand and dust injection device 100 for the gas turbine engine test according to an embodiment of the present invention can be estimated at the research and development stage of the effect of sand and dust (FO) that can be generated in the actual operation of the gas turbine engine. have.

The storage unit 120 of the gas turbine engine test sand and dust injection apparatus 100 according to an embodiment of the present invention has a predetermined space and includes an accommodation space 121 in which sand and dust FO are accommodated. Sand and dust (FO) may include a storage container 122 and the discharge port 124 is connected to the lower portion of the storage container 122 to connect the pump unit 140 and the storage container 122.

Here, the outlet 124 is formed in the lower side of the storage container 122 and the opening for injecting sand and dust (FO) into the receiving space 121 of the storage container 122 on the upper side of the storage container 122 ( Or a stopper (not shown) fitted into the opening. In addition, the surface of the storage container 122 is provided with a window for checking the contents (not shown) for checking the amount of sand and dust (FO) filled in the receiving space 121 or the scale (not shown) to the gauge according to the contents (Not shown) may be provided.

On the other hand, since the discharge port 124 is provided in the lower portion of the storage container 122, sand and dust (FO) may be naturally discharged from the storage container 122 while free fall by gravity. At this time, the storage container 122 may be provided in a standing form for more smooth discharge of sand and dust (FO). In addition, the outlet 124 has a pipe shape, and may be provided with a foreign matter discharge valve (not shown) in the outlet 124 to adjust the amount of sand and dust (FO) discharged.

Here, the outlet 124 may be formed in a conical shape gradually narrowed toward the pump unit 140 from the receiving space 121 so that sand and dust (FO) can pass through the outlet 124 well. That is, by forming the outlet 124 in the shape of a funnel, sand and dust (FO) can be supplied to the pump unit 140 more smoothly, quickly and continuously.

If the pump unit 140 continues to operate and the amount of sand and dust FO supplied to the pump unit 140 is not sufficient or uneven, the gas turbine engine 110 may not be properly tested.

On the other hand, the pump unit 140 may include a pump housing 141 connected to the outlet 124 of the storage unit 120 and a pump 146 provided or accommodated in the pump housing 141. That is, the pump unit 140 may include a pump 146 for generating a pumping force and a pump housing 141 for receiving the pump 146 and forming a flow path of the pumped fluid. Here, the pump housing 141 is formed larger than the outer diameter of the pump 146 is accommodated, it is preferable that a suitable gap is formed between the outermost end of the pump 146 and the inner surface of the pump housing 141. When the pump 146 rotates, fluid may flow through a gap between the pump 146 and the inner surface of the pump housing 141, thereby preventing high pressure from being generated in the pump housing 141.

The pump 146 may include a hub 147 on which the rotation shaft 149 is mounted at the center portion, and a plurality of wings 148 formed on the outer circumferential surface of the hub 147. By using the pump unit 140 formed with the hub 147 and the plurality of wings 148 configured as described above, sand and dust FO can be effectively sent to the high-pressure air injection unit 160 like a watermill.

The pump housing 141 is connected to the inlet 142 of the outlet 124 of the storage unit 120, the pump receiving body 143 and the inlet 142 which are connected to the inlet 142 and accommodate the pump 146. It may include a discharge port 144 formed in the pump receiving body 143 to face. That is, the suction port 142 and the discharge port 144 may be formed to face each other symmetrically with respect to the center of the pump receiving body 143, the suction port 142, the pump receiving body 143 and the discharge port 144 May be integrally formed.

The other end of the rotating shaft 149, one end of which is mounted at the center of the hub 147, may be provided with a pump driving unit 150 for rotating the pump 146. The pump driving unit 150 may include a driving motor 151 connected to one end of the rotation shaft 149 and a motor controller 152 connected to the driving motor 151 to control a driving state of the driving motor 151. By driving the pump 146 using the controllable driving motor 151 as described above, the rotation speed of the pump 146 can be adjusted and the amount of sand and dust FO introduced into the gas turbine engine 110 can be adjusted. have. In this case, the motor controller 152 may be connected to the drive motor 151 by a cable 153.

Referring to FIG. 2, the pump 146 according to an embodiment of the present invention may include a cylindrical hub 147 and a plurality of wings 148 formed or disposed at equal intervals on the outer circumferential surface of the hub 147. have. The plurality of wings 148 are formed at equal intervals on the outer circumferential surface of the cylindrical hub 147, so that the sand and dust FO can be fed into the sand and dust injection tube 113 evenly and almost identically.

Meanwhile, the hub 147 may flow sand and dust FO while rotating in the counterclockwise direction (see the arrow in FIG. 2) from the inlet 142 to the outlet 144. However, the rotation direction of the hub 147 is an example, and is not necessarily limited thereto. If the rotation direction of the hub is selected to allow sand and dust FO to flow well from the suction port 142 to the discharge port 144. do.

The wing 148 shown in FIG. 2 is formed in a flat plate shape, and sand and dust FO introduced between the wing 148 and the wing 148 through the discharge hole 144 as the wing 148 rotates. Can be discharged. That is, the pump 146 shown in FIG. 2 may discharge sand and dust FO in a principle similar to a watermill.

3 shows a modification of the pump. The pump shown in FIG. 3 differs in the shape of the vane and the pump shown in FIG. The vane 148 ′ of the pump shown in FIG. 3 has a curved plate shape rather than a flat plate shape. By having the wings 148 'formed concave along the rotation direction of the hub 147, as the hub 147 rotates, the wings 148' can spread sand and dust FO like a scoop. . Thus, by using the pump 146 provided with the curved wing 148 ', more sand and dust FO can be discharged in a short time.

Referring to FIG. 1, the high pressure air injection unit 160 has a discharge port 161 communicating with the discharge port 144 of the pump housing 141 at one end thereof, and has a pressure vessel in which the high pressure air PA is stored. 162 and a control valve 163 connected or mounted to the discharge port 161 to adjust the discharge amount or discharge pressure of the high-pressure air PA injected from the pressure vessel 162. By adjusting the opening / closing or opening / closing amount, opening / closing speed, etc. of the control valve 163, it is possible to adjust the discharge pressure or the discharge pressure of the high pressure air (PA), and thus the high pressure air (PA) mixed with sand and dust (FO). Flow rate or flow rate can be adjusted.

Here, the discharge port 144 of the pump unit 140 and the discharge port 161 of the high-pressure air injection unit 160 is a pipe 112 mounted on the inlet 111 of the gas turbine engine 110 to sand and dust. It may be in communication with the sand and dust injection tube 113 connected to the pipe 112 to inject (FO). Here, the sand and dust injection tube 113 is preferably formed in the form of a pipe having a relatively small diameter in order to increase the spraying effect.

The interior of the sand and dust injection tube 113 is a mixture of sand and dust (FO) and high pressure air (PA) to pass through. To this end, a portion where the discharge port 144 of the pump unit 140 and the discharge port 161 of the pressure vessel 162 of the high-pressure air injection unit 160 communicate with each other is located at the rear end side of the sand and dust injection tube 113. It is preferably formed. That is, the discharge port 144 and the discharge port 161 are provided so that the sand and dust FO can be supplied into the gas turbine engine 110 while the sand and dust FO and the high pressure air PA are sufficiently mixed. The communicating part is preferably connected to the sand and dust injection tube 113 far from the gas turbine engine 110. In other words, a portion where the discharge port 144 and the discharge port 161 communicate with each other upstream with respect to the flow direction of the sand and dust (FO) and the high pressure air (PA) mixture flowing through the sand and dust injection tube 113. Should be formed.

On the other hand, one end of the sand and dust injection tube 113 connected to the gas turbine engine 110 is preferably located in front of the inlet 111 of the gas turbine engine 110. A mixture of sand and dust (FO) and high pressure air (PA) is introduced into the gas turbine engine 110 together with air A flowing through the inlet 111 of the gas turbine engine 110. It may be formed in front of the inlet 111 of the 110, that is, the downstream side with respect to the flow direction of the air (A) flowing into the pipe 112 of the gas turbine engine 110.

Referring to Figure 1, the operation of the sand and dust injection apparatus 100 for the gas turbine engine test according to an embodiment of the present invention will be described. First, the gas turbine engine 110 operates to introduce air A through the pipe 112. In this state, the pump unit 140 operates to supply sand and dust FO stored in the storage unit 120 into the sand and dust injection tube 113. In addition, the control valve 163 of the high-pressure air injection unit 160 is opened, the high-pressure air PA in the pressure vessel 162 is discharged through the discharge port 161, sand and dust in the sand injection tube 113 Dust (FO) and high pressure air (PA) are mixed, sand and dust (FO) in this state is supplied to the pipe 112 of the gas turbine engine 110 and finally sand and dust into the gas turbine engine 110 (FO) is entered.

As described above, although described with reference to a preferred embodiment of the present invention, those skilled in the art will be variously modified and changed without departing from the spirit and scope of the invention described in the claims below I can understand that you can.

1 is a view schematically showing a gas turbine engine and a sand and dust injection apparatus for a gas turbine engine test according to an embodiment of the present invention.

2 is a view showing a pump unit used in the sand and dust injection device for the gas turbine engine test according to FIG.

3 is a view showing a modification of the pump unit according to FIG.

4 is a view showing a drive structure of the pump unit according to FIG.

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

100: sand and dust injection device for gas turbine engine test

110: gas turbine engine 120: storage unit

140: pump unit 150: pump drive unit

160: high pressure air jet A: air FO: sand and dust

PA: high pressure air

Claims (10)

In the sand and dust injection device for gas turbine engine test for injecting sand and dust into the gas turbine engine, A storage unit for storing the sand and dust; A pump unit configured to discharge the sand and dust from the storage unit; And A high pressure air spray unit for injecting high pressure air into the sand and dust discharged by the pump unit and for transporting the sand and dust into the gas turbine engine; Including; The gas turbine engine may include a pressure vessel in which a discharge port communicating with the pump unit is formed at one end and a high pressure air is stored therein, and a control valve connected to the discharge port to control the discharge of the high pressure air. Test sand and dust injector. The method of claim 1, The storage unit has a storage space and includes a storage container for storing the sand and dust and a discharge port connected to the lower portion of the storage container for connecting the pump unit and the storage container, The discharge port is a sand and dust injection device for testing gas turbine engine, characterized in that formed in a conical shape narrowing toward the pump portion. 3. The method of claim 2, The pump unit includes a pump housing connected to the outlet and a pump provided inside the pump housing, The pump is a sand and dust injection device for a gas turbine engine test including a hub having a rotating shaft in the center portion and a plurality of wings formed on the outer peripheral surface of the hub. The method of claim 3, The pump housing is a sand and dust injection device for a gas turbine engine test including a suction port connected to the discharge port, a pump receiving body connected to the suction port and receiving the pump and a discharge port formed in the pump receiving body to face the suction port. delete 5. The method of claim 4, And the discharge port and the discharge port are in communication with a sand and dust injection tube connected to a pipe mounted at an inlet of the gas turbine engine. The method of claim 6, The sand and dust injection tube is a sand and dust injection device for testing gas turbine engine, characterized in that the mixture of the sand and dust and the high pressure air passes. The method of claim 7, wherein One end of the sand and dust injection tube is a sand and dust injection device for testing the gas turbine engine, characterized in that located in front of the inlet of the gas turbine engine. The method of claim 3, One end of the rotary shaft is connected to the drive motor, the drive motor is a sand and dust injection device for a gas turbine engine test, characterized in that connected to the motor controller. 5. The method of claim 4, The plurality of wings are disposed on the outer circumferential surface of the hub at equal intervals, the hub is rotated so that the sand and dust flows from the suction port toward the discharge port, characterized in that the gas turbine engine test sand and dust injection device.

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