A high-temperature displacement sensor cooling device applied to high-temperature vibration test of a gas turbine blade

Abstract

The application provides a high-temperature displacement sensor cooling device applied to high-temperature vibration test of a gas turbine blade, and relates to the technical field of gas turbines, in particular to a device for cooling a high-temperature displacement sensor in high-temperature vibration test of a gas turbine. The application solves the problem of overheating of the high-temperature displacement sensor in the process of high-temperature vibration test of the gas turbine, and reduces the surface temperature of the high-temperature displacement sensor. The measuring point of the high-temperature displacement sensor is easy to adjust through reasonable arrangement of a support structure; the surface temperature of the high-temperature displacement sensor is reduced to below the allowable working temperature through arrangement of a water cooling structure, and the working environment adaptability of the high-temperature displacement sensor is improved. The high-temperature displacement sensor cooling device for high-temperature vibration test of the gas turbine blade mainly comprises a support structure, a cooling device, a water cooling machine and an air compressor.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of gas turbine, in particular, to a device for cooling high-temperature displacement sensor in high-temperature vibration test of gas turbine blade. BACKGROUND

[0002] The vibration test of the blade is widely used in the industry as a method for obtaining the high-cycle fatigue strength of the blade. The gas turbine blade is a key component for completing the function conversion and has a high working temperature. In order to better simulate the high-temperature working environment of the blade and obtain the high-cycle fatigue performance of the gas turbine blade under the high-temperature condition, the high-temperature vibration test of the blade needs to be carried out, and the high-temperature displacement sensor is often used to monitor the displacement in the high-temperature area. However, in the high-temperature test, the thermal radiation of the observation window of the high-temperature furnace is serious, and the temperature thereof exceeds the working temperature of the high-temperature displacement sensor. The cooling device for the high-temperature displacement sensor, as an important part of the high-temperature vibration test of the gas turbine blade, can effectively reduce the surface temperature of the high-temperature displacement sensor and realize the measurement of the high-temperature displacement.

[0003] The turbine blade of the ship gas turbine operates at a high temperature, and the operating temperature of part of the blade can reach thousands of degrees. The surface temperature of the high-temperature displacement sensor radiated through the observation window of the high-temperature furnace can reach 70℃, which exceeds the maximum temperature that the high-temperature sensor can withstand. Therefore, by designing the cooling device for the high-temperature displacement sensor, the sensor can be protected by cooling around the sensor, so that the sensor can operate below the working temperature, and the measurement of the high-temperature displacement of the blade in the high-temperature vibration test of the blade can be realized. SUMMARY

[0004] The purpose of the present application is to provide a cooling device for a high-temperature displacement sensor, which is suitable for protecting the high-temperature displacement sensor in the high-temperature vibration test of the blade of the ship gas turbine and has universality.

[0005] The purpose of the present application is achieved by a support structure A, a cooling device B, a water cooling machine and an air compressor. The support structure A comprises a horizontal beam 1, a column 2, a cross beam 3, a support beam 4, a triangular support 5, a support plate 6 and an adapter plate 7. The horizontal beam 1 is fixed on the high-temperature furnace, the column 2 is fixed on the horizontal beam 1, the cross beam 3 is fixed on the column 2 and is supported and fixed through the support beam 4 and the support plate 6, the adapter plate 7 is fixed on the cross beam 3 and is used for suspending the cooling device. The structures are connected through the triangular support 5.

[0006] The horizontal beam, the column, the cross beam, the support beam and the support plate have a slide rail with a width of 1cm and a depth of 2cm, and are connected with the triangular support, the bolt and the T-shaped nut to adjust the connection position of each mechanism, so that the high-temperature displacement sensor is aligned with the monitoring point.

[0007] Adapter plate 7 and crossbeam 3 are connected by bolts, and threaded holes are arranged on the adapter plate 7, which can be bolted with the cooling device, and slide rails are arranged on the adapter plate 7, which can be adjusted in the vertical direction between the adapter plate 7 and the crossbeam 3.

[0008] Mounting plate 8, upper cover 9, shell 10, water-cooled plate 11, lower cover 12 and cold-blowing plate 13 are composed, and the outer surfaces of the parts are painted red to enhance the reflection of heat radiation.

[0009] Mounting plate 8 is connected with adapter plate 7 and shell 10 by bolts. Shell 10 is connected with upper cover 9 and lower cover 12 by bolts, and water-cooled plate 11 is clamped between lower cover 12 and shell 10.

[0010] Mounting plate 8 has a through hole and a 1 / 4 circular arc track, which can adjust the angle of the high-temperature displacement sensor.

[0011] Upper cover 9 is provided with a glass observation window for observing the indicator light of the high-temperature displacement sensor, and lower cover 12 is provided with a glass observation window for emitting and receiving laser signals of the high-temperature displacement sensor.

[0012] Water-cooled plate 11 is provided with a serpentine channel for improving the cooling effect, and compressed air can also be used for cooling when the cooling effect is allowed.

[0013] The cold-blowing plate 13 can continuously clean the lower cover glass window to prevent dust or condensed water from adhering to the lower glass window and affecting the measurement.

[0014] Compared with the prior art, the high-temperature displacement sensor cooling device has the advantages of simple structure, convenient installation, long service life, simple operation, space saving, etc.; the detection position of the high-temperature displacement sensor can be quickly adjusted according to the size of the test blade and the measurement point requirements; the problem of equipment damage caused by overheating of the high-temperature displacement sensor under high-temperature conditions can be avoided; the advantages of the present application are that the surface temperature of the high-temperature displacement sensor can be effectively reduced, and the high-temperature displacement measurement requirements of blade vibration test under room temperature to 1000℃ can be met; the positions of the adapter plate, the horizontal beam and the slide rails can be adjusted according to the measurement position, and the high-temperature vibration test of blades with various structures can be met; water cooling or air cooling can be selected according to the temperature of the blade test, which is flexible; the cold-blowing device can effectively prevent the pollution of the observation window; the device is directly fixed in the furnace without additional support, which saves space. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a whole schematic view of the high-temperature displacement sensor cooling device of the present application.

[0016] Figure 2 It is a partial schematic view of the cooling device of the present application.

[0017] Figure 3 is a schematic view of an upper cover of the cooling device;

[0018] Figure 4 is a schematic view of a shell of the cooling device;

[0019] Figure 5 is a schematic view of a water cooling plate of the cooling device;

[0020] Figure 6 is a schematic view of a lower cover of the cooling device;

[0021] Figure 7 is a schematic view of a cold blowing plate of the cooling device.

[0022] In the figure, 1 is a horizontal beam, 2 is a vertical column, 3 is a cross beam, 4 is a support beam, 5 is a triangular support, 6 is a support plate, 7 is an adapter plate, 8 is a mounting plate, 9 is an upper cover, 10 is a shell, 11 is a water cooling plate, 12 is a lower cover, and 13 is a cold blowing plate. DETAILED DESCRIPTION

[0023] The present application will be further described in detail below in combination with the accompanying drawings and specific embodiments.

[0024] In combination Figures 1-7 , the support structure of the present application is fixed on a high-temperature furnace by a horizontal beam, and the horizontal beam is provided with a sliding rail to realize forward and backward movement. The vertical column is fixed on the horizontal beam by a triangular support, the cross beam is fixed on the vertical column by a triangular support, and is supported by a support beam and a support plate to ensure stability; the cross beam is fixed with an adapter plate, which is connected by a bolt and a sliding block nut to realize horizontal movement. The adapter plate is connected to the mounting plate of the cooling device by a bolt, and the mounting plate is connected to the shell by a bolt. The vertical column and the adapter plate are provided with a sliding rail to realize vertical movement. The upper part of the shell is connected to the upper cover by a screw. The upper cover includes an upper cover, a clamping plate, and an upper cover observation window. When replacing the sensor, only the upper cover needs to be removed, without the need to remove the entire cooling device. The lower part of the shell is connected to the lower cover by a screw, and the water cooling plate is clamped between the shell and the lower cover. The lower cover has an observation window for emitting and receiving laser by the high-temperature displacement sensor. The water cooling plate can be ventilated or water-cooled according to the actual cooling effect, to realize the cooling function. The cold blowing plate is fixed below the lower cover, used to cool the lower observation window 110 and keep the observation window clean, avoiding the condensate water adhering to the lower observation window of the lower cover due to high environmental humidity, thereby affecting the displacement measurement. A temperature sensor can be installed inside the shell to monitor the surface temperature of the sensor.

[0025] As Figure 1As shown in the figure, a high-temperature displacement sensor cooling device for high-temperature vibration test of a gas turbine blade comprises a horizontal beam 1, a vertical column 2, a cross beam 3, a support beam 4, a triangular support 5, a support plate 6, an adapter plate 7, and a cooling device B. The horizontal beam 1 is fixed on a high-temperature furnace chamber, and a front-rear direction sliding rail is arranged on the horizontal beam 1 to realize front-rear direction movement of the sensor. The vertical column 2 is fixed on the horizontal beam 1 through the triangular support 5, and a vertical direction sliding rail is arranged on the vertical column 2 to realize up-down movement of the sensor. The cross beam 3 is fixed on the vertical column 2 through the triangular support 5 and is stably supported by the support beam 4, and a sliding rail is arranged on the cross beam 3 to realize horizontal direction movement of the sensor. The support plate 6 is fixed on the cross beam 3 through the triangular support 5 to ensure the stability of the cross beam 3. The adapter plate 7 is hung at one end of the cross beam 3, and a threaded hole is arranged on the adapter plate 7 to be used for fixing the cooling device, and a track is arranged on the adapter plate 7 to realize up-down fine adjustment of the cooling device B.

[0026] As shown in the figure, Figure 2 The cooling device B comprises a mounting plate 8, an upper cover 9, a shell 10, a water-cooled plate 11, a lower cover 12, and a cold-blowing plate 13. The mounting plate 8 is bolted with the adapter plate 7 to realize fixing of the cooling device. The main features are that a through hole and a 1 / 4 circular arc track are arranged on the upper half of the mounting plate 8 to connect the adapter plate 7 and realize adjustment of the monitoring angle of the laser displacement sensor; and four through holes are arranged on the lower half of the mounting plate 8 to connect the shell 10.

[0027] As shown in the figure, Figure 3 The upper cover 9 comprises an upper cover plate, a high-temperature displacement sensor clamping plate, and a sensor observation window 92. The use state of the internal high-temperature displacement sensor is monitored through the sensor observation window. The upper cover is provided with a sensor wire hole 93 for laser displacement sensor wiring. The clamping plate is provided with three through holes for clamping the high-temperature sensor 94.

[0028] As shown in the figure, Figure 4 The shell 10 is a hollow thin-walled structure, and the inside of the shell 10 is used for placing the high-temperature displacement sensor. Threaded holes are arranged on the side of the shell 10 to connect the mounting plate, and threaded holes are arranged on the upper and lower faces of the shell 10 to connect the upper and lower cover plates.

[0029] As shown in the figure, Figure 5 The lower cover 12 is provided with a glass window 122 through a glass window support step 120 on the lower cover 12, which is used for laser emission and reception of the high-temperature displacement sensor. The lower cover 12 is provided with a threaded hole 121 at the lower part to connect the cold-blowing plate.

[0030] As shown in the figure, Figure 6 The water-cooled plate is provided with a water-cooled inlet and a water-cooled outlet on the side of the water-cooled plate, and a flow channel 111 (a serpentine cooling channel) is arranged inside the water-cooled plate.

[0031] As shown in the figure, Figure 7 The cold-blowing plate is provided with a cold air flow channel 130. Cold air enters through an air inlet and is blown out through a gap between the lower cover and the cold-blowing plate to achieve the purpose of cooling the lower glass plate.

[0032] The specific working principle of the present application is as follows: first, clamp the blade at room temperature, adjust the support structure of the cooling device according to the displacement monitoring position of the blade determined by finite element analysis and experimental experience, so that the high-temperature displacement sensor laser coincides with the monitoring point, and at the same time, observe the high-temperature displacement sensor indicator light 91 to make it green or orange. Connect the waterway and airway before starting to heat, adjust the water cooling pipe and compressed air flow, and then heat. Start measuring after the temperature reaches the test temperature.

[0033] In summary, the present application is a high-temperature displacement sensor cooling device applied to high-temperature vibration test of gas turbine blade, which relates to the technical field of gas turbine, and in particular, relates to a device for cooling high-temperature displacement sensor in high-temperature vibration test of gas turbine. The present application solves the problem of overheating of high-temperature displacement sensor in the process of high-temperature vibration test of gas turbine, and reduces the surface temperature of high-temperature displacement sensor. By reasonably arranging the support structure, the measuring point of high-temperature displacement sensor is easy to adjust; by arranging the water cooling structure, the surface temperature of high-temperature displacement sensor is reduced to below the allowable working temperature, and the working environment adaptability of high-temperature displacement sensor is improved. The high-temperature displacement sensor cooling device for high-temperature vibration test of gas turbine blade provided by the present application mainly comprises: a support structure, a cooling device, a water cooling machine and an air compressor.

Claims

1. A high temperature displacement sensor cooling device for use in high temperature vibration testing of gas turbine blades, characterized by: The application relates to a cooling device for a high-temperature displacement sensor, which comprises a support structure, a cooling device arranged on the support structure, a water cooling machine connected with the cooling device and an air compressor. The cooling device comprises a mounting plate, an upper cover, a shell, a water cooling plate, a lower cover and a cold blowing plate, the outer surfaces of the parts are coated with red paint, the mounting plate is connected with the shell through bolts, the shell is connected with the upper cover and the lower cover through bolts, the water cooling plate is clamped between the lower cover and the shell, and the cold blowing plate is arranged at the lower end of the lower cover. The support structure comprises a horizontal beam, a stand, a cross beam, a support beam, a triangular support, a support plate and an adapter plate, the horizontal beam is fixed on a high-temperature furnace chamber, the stand is fixed on the horizontal beam, the cross beam is fixed on the stand and is supported and fixed through the support beam and the support plate, the adapter plate is fixed on the cross beam and is used for suspending the cooling device, the structures are connected through the triangular supports, the adapter plate is connected with the cross beam through bolts, the adapter plate is provided with sliding rails and can be adjusted in the vertical direction with the cross beam, and the adapter plate is connected with the mounting plate through bolts.

2. The cooling device for high temperature displacement sensor applied to high temperature vibration test of gas turbine blade according to claim 1, characterized in that: The mounting plate is provided with through holes and 1 / 4 circular arc tracks, the angle of the high-temperature displacement sensor can be finely adjusted.

3. The cooling device for high temperature displacement sensor applied to high temperature vibration test of gas turbine blade according to claim 1, characterized in that: The upper cover is provided with a glass observation window for observing the indicating lamp of the high-temperature displacement sensor, and the lower cover is provided with a glass observation window for emitting and receiving laser signals of the high-temperature displacement sensor.

4. The cooling device for high temperature displacement sensor applied to high temperature vibration test of gas turbine blade according to claim 1, characterized in that: The water cooling plate is provided with a serpentine channel for improving the cooling effect, and compressed air is used for cooling when the cooling effect is allowed.

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