Sensor cooling device

Abstract

The present invention provides a sensor cooling device, including a box body and an upper cover plate, wherein the upper cover plate is fixed on the box body, a measuring window is provided on one side of the box body, a heat-insulating glass is provided on the inner side of the measuring window, a distance is provided between the measuring window and the heat-insulating glass, and the measuring window is located within the range of the heat-insulating glass in the orthographic projection, a flow guide groove is distributed around the measuring window on the inner side of the box body, an air inlet is provided on one side of the box body relative to the measuring window, and a first beam is provided at the bottom of the box body; a second beam is distributed on the inner side of the upper cover plate, and the second beam is distributed around the air inlet in a fan shape. The present invention has a simple structure, realizes uniform cooling of the sensor, has high cooling efficiency, and ensures that the sensor is always at a relatively low temperature when measuring a high-temperature object at a close distance; realizes cooling of the sensor measuring surface, and does not refract the laser of the sensor, and does not affect the measurement effect.

Description

Technical Field

[0001] The present invention relates to the technical field of a high-temperature component vibration fatigue test measurement device, and in particular to a sensor cooling device. Background Art

[0002] In engineering, it is often necessary to conduct high-temperature vibration fatigue test research on specimens. Since high-temperature strain gauges cannot work for a long time, amplitude measurement is often used instead. Laser displacement sensors are used to measure amplitude, but such sensors cannot work under high temperature conditions.

[0003] Traditional means of cooling sensors include: 1. Keep away from high-temperature objects to be measured; due to the limitation of sensor measurement distance, this method cannot be used to carry out high-temperature vibration fatigue tests on high-temperature test pieces such as aircraft engine turbine blades. 2. Use air nozzle single-point cooling; this method can only perform local cooling of the sensor, with poor effect and low efficiency, and changes in air flow pressure and speed affect the stable measurement of the sensor. 3. Water cooling; a special water jacket device needs to be made, and the sensor measurement surface cannot be cooled. 4. Matrix air cooling; complex structure, large space size, difficult installation and fixation, not convenient for engineering implementation and application. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a sensor cooling device.

[0005] The present invention is achieved through the following technical solutions.

[0006] The sensor cooling device provided by the present invention comprises a box body and an upper cover plate, wherein the upper cover plate is fixed on the box body, a measuring window is provided on one side of the box body, a heat-insulating glass is provided on the inner side of the measuring window, a distance is provided between the measuring window and the heat-insulating glass, and the measuring window is located within the range of the heat-insulating glass in the orthographic projection, a guide groove is distributed around the measuring window on the inner side of the box body, an air inlet is provided on one side of the box body opposite to the measuring window, and a first beam is provided on the bottom of the box body; second beams are distributed on the inner side of the upper cover plate, and the second beams are distributed in a fan shape around the air inlet.

[0007] The present invention has a simple structure, realizes uniform cooling of the sensor, has high cooling efficiency, and ensures that the sensor is always operating normally at a relatively low temperature when measuring a high-temperature object at close range; realizes cooling of the sensor measuring surface, and does not refract the laser of the sensor, thereby not affecting the measurement effect; and through the first beam at the bottom of the box body and the second beam on the inner side of the upper cover plate, ensures uniform cooling airflow, avoids the formation of gas vortex and stagnation, and has a good cooling effect.

[0008] The second beams are evenly distributed along the fan shape.

[0009] It also includes a third beam, which is located at an end of the upper cover plate away from the air inlet, and the third beam is distributed alternately with the second beam.

[0010] The box body is also provided with a screw for fixing the sensor.

[0011] The upper end of the screw rod passes through the upper cover plate, and a nut is arranged at the upper end of the screw rod, and the nut is pressed on the upper cover plate.

[0012] The inner side of the box body is provided with a connecting column, a threaded hole is provided in the connecting column, and screws are distributed on the upper cover plate corresponding to the connecting column. The screws penetrate the upper cover plate and are connected with the threaded hole.

[0013] The air inlet is in the shape of a cylindrical tube, one end of the air inlet is provided with a limiting structure, the limiting structure is located in the box body, the other end of the air inlet is provided with an external thread, a nut is screwed on the external thread.

[0014] One end of the first beam faces the heat-insulating glass and is distributed in parallel.

[0015] In orthographic projection, the edge of the heat-insulating glass is located in the middle of the guide groove.

[0016] In orthographic projection, the measuring window is located in the middle of the insulating glass.

[0017] The beneficial effects of the present invention are:

[0018] The present invention has a simple structure, realizes uniform cooling of the sensor, has high cooling efficiency, and ensures that the sensor is always operating normally at a relatively low temperature when measuring a high-temperature object at close range; realizes cooling of the sensor measuring surface, and does not refract the laser of the sensor, thereby not affecting the measurement effect; and through the first beam at the bottom of the box body and the second beam on the inner side of the upper cover plate, ensures uniform cooling airflow, avoids the formation of gas vortex and stagnation, and has a good cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention.

[0020] Figure 2 It is a side schematic diagram of the present invention.

[0021] Figure 3 It is a schematic diagram of the structure of the box.

[0022] Figure 4 It is a structural schematic diagram of the upper cover.

[0023] Figure 5 It is a schematic diagram of the structure of the air intake.

[0024] Figure 6 It is a schematic diagram of the sensor appearance.

[0025] Figure 7 It is a schematic diagram of the formation principle of the cooling flow field.

[0026] In the figure: 1-box body; 2-upper cover; 3-measuring window; 4-insulating glass; 5-guide groove; 6-air inlet; 7-first beam; 8-second beam; 9-third beam; 10-screw; 11-connecting column; 12-limiting structure. DETAILED DESCRIPTION

[0027] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0028] like Figures 1 to 4 Shown is a schematic diagram of the structure of the present invention:

[0029] The present invention provides a sensor cooling device, comprising a box body 1 and an upper cover plate 2, wherein the upper cover plate 2 is fixed on the box body 1, a measuring window 3 is provided on one side of the box body 1, a heat-insulating glass 4 is provided on the inner side of the measuring window 3, a distance is provided between the measuring window 3 and the heat-insulating glass 4, and the measuring window 3 is located within the range of the heat-insulating glass 4 in the orthographic projection, a guide groove 5 is distributed around the measuring window 3 on the inner side of the box body 1, an air inlet is provided on one side of the box body 1 relative to the measuring window 3, and a first beam 7 is provided at the bottom of the box body 1; second beams 8 are distributed on the inner side of the upper cover plate 2, and the second beams 8 are distributed around the air inlet in a fan shape.

[0030] Principle: When in use, the sensor is placed in the box body 1, the measuring part of the sensor faces the measuring window 3, and the air inlet is connected to the cooling air source. The cooling air flows in from the air inlet, and flows to the measuring window 3 along the flow channel formed by the first beam 7 and the second beam 8 inside the device, thereby cooling the sensor as a whole; the measuring window 3 faces the high-temperature component to be measured, and the airflow flows from the surroundings of the insulating glass 4 to the measuring window 3 through the insulation of the insulating glass 4 and the combined effect of the guide groove 5, and forms a layer of airflow field with stable pressure and uniform flow when passing through the measuring window 3. Under the weakening of thermal radiation by the airflow field and the cooling effect of the airflow on the sensor, the sensor is ensured to work normally at a lower temperature at all times.

[0031] The present invention has a simple structure, realizes uniform cooling of the sensor, has high cooling efficiency, and ensures that the sensor is always at a relatively low temperature when measuring a high-temperature object at a close distance. It realizes cooling of the sensor measuring surface without refracting the laser of the sensor and affecting the measurement effect. The first beam 7 at the bottom of the box body 1 and the second beam 8 on the inner side of the upper cover plate 2 ensure uniform cooling airflow, avoid the formation of gas vortex and stagnation, and have a good cooling effect.

[0032] The second beams 8 are evenly distributed along the fan shape, so that the airflow has good uniformity.

[0033] The third beam 9 is also included, and the third beam 9 is located at the end of the upper cover plate 2 away from the air inlet, and the third beam 9 is distributed alternately with the second beam 8. It is convenient to keep the flow channel width between the beams within a certain range, make the gas flow rate uniform, and improve the cooling effect.

[0034] The box body 1 is also provided with a screw 10 for fixing the sensor.

[0035] The upper end of the screw rod 10 passes through the upper cover plate 2, and a nut is provided at the upper end of the screw rod 10, and the nut is pressed on the upper cover plate 2. The stability is good, and the sealing of the upper cover plate 2 is ensured.

[0036] The box body 1 is provided with a connecting column 11 inside, and a threaded hole is provided in the connecting column 11. The upper cover plate 2 is provided with screws corresponding to the connecting column 11, and the screws penetrate the upper cover plate 2 and are connected with the threaded hole, so that the upper cover plate 2 is easy to assemble and disassemble, and has a good sealing effect.

[0037] The air inlet is cylindrical, with a limiting structure 12 at one end, the limiting structure 12 being located in the box body 1, and an external thread at the other end, on which a nut is screwed. The installation is convenient, and the nut and the limiting structure 12 are pressed tightly to prevent external hot air from entering; and the external thread can realize the connection between the air inlet and the cooling air source.

[0038] One end of the first beam 7 faces the insulating glass 4 and is distributed in parallel.

[0039] In orthographic projection, the edge of the heat-insulating glass 4 is located in the middle of the guide groove 5 .

[0040] In orthographic projection, the measuring window 3 is located in the middle of the heat-insulating glass 4 .

Claims

1. A sensor cooling device, characterized in that: The invention comprises a box body (1) and an upper cover plate (2), wherein the upper cover plate (2) is fixed on the box body (1), a measuring window (3) is provided on one side of the box body (1), a heat-insulating glass (4) is provided on the inner side of the measuring window (3), a spacing is provided between the measuring window (3) and the heat-insulating glass (4), and the measuring window (3) is located within the range of the heat-insulating glass (4) in the orthographic projection, a guide groove (5) is distributed around the measuring window (3) on the inner side of the box body (1), an air inlet is provided on one side of the box body (1) opposite to the measuring window (3), and a first beam (7) is provided on the bottom of the box body (1); a second beam (8) is distributed on the inner side of the upper cover plate (2), and the second beam (8) is distributed around the air inlet in a fan-shaped manner; The box body (1) is provided with a connecting column (11) on the inner side, and a threaded hole is provided in the connecting column (11). The upper cover plate (2) is provided with screws corresponding to the connecting column (11), and the screws penetrate the upper cover plate (2) and are connected to the threaded hole. It also includes a third beam (9), which is located at an end of the upper cover plate (2) away from the air inlet, and the third beam (9) and the second beam (8) are distributed alternately.

2. The sensor cooling device according to claim 1, characterized in that: The second beams (8) are evenly distributed along the fan shape.

3. The sensor cooling device according to claim 1, characterized in that: A screw rod (10) for fixing the sensor is also provided in the box body (1).

4. The sensor cooling device according to claim 3, characterized in that: The upper end of the screw rod (10) passes through the upper cover plate (2), and a nut is provided at the upper end of the screw rod (10), and the nut is pressed onto the upper cover plate (2).

5. The sensor cooling device according to claim 1, characterized in that: The air inlet is in the shape of a cylindrical tube, one end of the air inlet is provided with a limiting structure (12), the limiting structure (12) is located in the box body (1), and the other end of the air inlet is provided with an external thread, a nut is screwed onto the external thread.

6. The sensor cooling device according to claim 1, characterized in that: One end of the first beam (7) faces the heat-insulating glass (4) and is distributed in parallel.

7. The sensor cooling device according to claim 1, characterized in that: In orthographic projection, the edge of the heat-insulating glass (4) is located in the middle of the guide groove (5).

8. The sensor cooling device according to claim 1, characterized in that: In orthographic projection, the measuring window (3) is located in the middle of the heat-insulating glass (4).

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