Thermal fatigue test device for high-temperature alloy pipe

Abstract

A thermal fatigue experiment device for a high-temperature alloy pipe comprises a supporting table and a sliding table arranged on the supporting table, one end of the sliding table is connected with a servo motor, and the other end of the sliding table is provided with an induction coil; an air cooler and a low-temperature temperature measuring gun are arranged on the lower side of the sliding table and on the supporting table; a high-temperature temperature measuring gun is arranged on the lower side of the induction coil and on the supporting table, an induction heating power supply is arranged on the lower side of the high-temperature temperature measuring gun and on the supporting table, and the induction coil is connected with the induction heating power supply through a connecting rod, so that the induction coil is located on the supporting table; the induction coil is adopted for heating, the heating speed is high, and the actual working condition heating process is better met; by setting parameters such as the highest temperature, the lowest temperature, the heating speed, the heat preservation time and the sample feeding speed, automatic heating-heat preservation-cooling reciprocating circulation of the pipe can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of material testing instruments, in particular to a thermal fatigue testing device for high-temperature alloy pipes. Background Art

[0002] Under working conditions, the ambient temperature of high-temperature metal pipes is constantly changing, which will cause continuous expansion and contraction, causing thermal fatigue damage to the pipes.

[0003] The working conditions of high-temperature nickel-based alloys used in the receiver of a solar thermal power station are mainly the process of continuous heating and cooling of the molten salt in the tube, and the working temperature range is between 200℃ and 700℃. The tube undergoes repeated thermal expansion and contraction, and there is a temperature difference between the sunny side and the shady side, which can easily cause cracks on the surface of the tube and thermal fatigue failure. How to evaluate the life of nickel-based alloy tubes used in solar thermal power stations has become an important problem in the use of nickel-based alloy tubes, the core components of solar thermal power station receivers. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a thermal fatigue test device for high-temperature alloy pipes.

[0005] The technical solution adopted by the present invention to solve the technical problem is:

[0006] A thermal fatigue test device for a high-temperature alloy pipe comprises a support platform and a slide arranged on the support platform, wherein one end of the slide is connected to a servo motor and the other end is provided with an induction coil; a cooling fan and a low-temperature temperature measuring gun are provided on the lower side of the slide and the support platform; a high-temperature temperature measuring gun is provided on the lower side of the induction coil and the support platform, and an induction heating power supply is provided on the lower side of the high-temperature temperature measuring gun and the support platform, and the induction coil is connected to the induction heating power supply through a connecting rod so that the induction coil is located on the support platform.

[0007] In one embodiment, the slide table includes a slide rail, a left ball screw seat and a right ball screw seat arranged at both ends of the slide rail, a screw arranged on the left ball screw seat and the right ball screw seat, and a slider arranged on the screw, one end of the screw passes through the left ball screw seat or the right ball screw seat and is fixedly connected to the output shaft of the servo motor.

[0008] In one embodiment, a sliding seat is fixedly connected to the sliding block, and a sliding groove matching the sliding rail is formed at the bottom of the sliding seat.

[0009] In one embodiment, a vertical support block is provided on the slide seat, and a transverse support block is connected to the top of the vertical support block.

[0010] In one embodiment, a support rod is provided on the top of the transverse support block, and one end of the support rod extends out of the transverse support block and is connected to a plurality of support sheets.

[0011] In one embodiment, a plurality of the support sheets are evenly arranged on the support rod.

[0012] In one embodiment, a frequency conversion controller, a touch screen display controller, and a temperature control sensing signal processor are provided on the support platform.

[0013] In one embodiment, the frequency conversion controller is electrically connected to the servo motor and the touch screen display controller, the touch screen display controller is electrically connected to the temperature control sensing signal processor, and the temperature control sensing signal processor is electrically connected to the induction heating power supply.

[0014] In one embodiment, the low-temperature temperature measuring gun and the high-temperature temperature measuring gun are both electrically connected to the induction heating power supply.

[0015] In one embodiment, support feet are provided at the four corners of the bottom of the support platform.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention comprises a support platform and a slide arranged on the support platform, one end of the slide is connected to a servo motor and the other end is provided with an induction coil; a cooling fan and a low-temperature temperature measuring gun are arranged on the lower side of the slide and the support platform; a high-temperature temperature measuring gun is arranged on the lower side of the induction coil and the support platform, and an induction heating power supply is arranged on the lower side of the high-temperature temperature measuring gun and the support platform, and the induction coil is connected to the induction heating power supply through a connecting pipe, so that the induction coil is located on the support platform; thus, the induction coil is used for heating, and the heating speed is fast, which is more in line with the actual working condition heating process. By setting parameters such as the maximum temperature, the minimum temperature, the heating speed, the insulation time, and the sample delivery speed, the automatic heating-insulation-cooling reciprocating cycle of the pipe can be realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0019] Figure 2 For the present invention Figure 1 A schematic diagram of a top view structure;

[0020] Figure 3 For the present invention Figure 1 Schematic diagram of the slide structure.

[0021] In the figure: 10. support table, 11. air cooler, 12. low temperature temperature measuring gun, 13. high temperature temperature measuring gun, 14. induction heating power supply, 15. connecting rod, 16. supporting foot, 20. slide table, 21. slide rail, 22. left ball screw seat, 23. right ball screw seat, 24. screw, 25. slider, 26. slide seat, 27. slide groove, 30. servo motor, 31. vertical support block, 32. horizontal support block, 33. support rod, 34. support sheet, 35. test sample tube, 40. induction coil, 50. frequency conversion controller, 60. touch screen display controller, 70. temperature control induction signal processor. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0023] Example 1

[0024] like Figure 1-3 As shown, this embodiment includes a support platform 10 and a slide 20 arranged on the support platform 10; one end of the slide 20 is connected to a servo motor 30, and the other end is provided with an induction coil 40; in this embodiment, the slide 20 includes a slide rail 21, a left ball screw seat 22 and a right ball screw seat 23 arranged at both ends of the slide rail 21, a screw 24 arranged on the left ball screw seat 22 and the right ball screw seat 23, and a slider 25 arranged on the screw 24, one end of the screw 24 passes through the left ball screw seat 21 or the right ball screw seat 23 and is fixedly connected to the output shaft of the servo motor 30; in this embodiment, one end of the screw 24 passes through the left ball screw seat 21 and is fixedly connected to the output shaft of the servo motor 30; thus, through the operation of the servo motor 30, the screw 24 is driven to rotate on the left ball screw seat 22 and the right ball screw seat 23, so that the slider 25 reciprocates on the screw 24.

[0025] A slide seat 26 is fixedly connected to the slider 25 , and a slide groove 27 matching the slide rail 21 is provided at the bottom of the slide seat 26 ; thus, the slide seat 26 reciprocates on the slide rail 21 through the operation of the slider 25 .

[0026] A vertical support block 31 is provided on the slide 26, and a transverse support block 32 is connected to the top of the vertical support block 31; a support rod 33 is provided on the top of the transverse support block 32, and one end of the support rod 33 extends out of the transverse support block 32 and is connected to a plurality of support sheets 34; thus, the experimental sample tube 35 is sleeved on the plurality of support sheets 34; in this embodiment, the support rod 33 is a threaded support rod;

[0027] In this embodiment, one end of the support rod 33 extending out of the lateral support block 32 is provided with a left baffle and a right baffle whose diameters are larger than the diameter of the experimental sample tube 35, and a plurality of support plates 34 are located between the left baffle and the right baffle, thereby restricting the experimental sample tube 35 on the plurality of support plates 34 through the left baffle and the right baffle, and placing the experimental sample tube 35 in a position to move left and right.

[0028] In this embodiment, the left baffle plate and the right baffle plate are threadedly connected to the support rod 33 , so that the positions of the left baffle plate and the right baffle plate can be adjusted on the support rod 33 .

[0029] Thus, the test sample tube 35 is sleeved on the plurality of support plates 34 , and reciprocates in the induction coil 40 through the reciprocating motion of the slide 26 .

[0030] In this embodiment, a plurality of support sheets 34 are evenly disposed on the support rod 33 .

[0031] A cooling fan 11 and a low-temperature temperature measuring gun 12 are provided on the lower side of the slide 20 and the support platform 10; a high-temperature temperature measuring gun 13 is provided on the lower side of the induction coil 40 and the support platform 10, and an induction heating power supply 14 is provided on the lower side of the high-temperature temperature measuring gun 13 and the support platform 10; and a frequency conversion controller 50, a touch screen display controller 60, and a temperature control induction signal processor 70 are also provided on the support platform 10;

[0032] The frequency conversion controller 50 is electrically connected to the servo motor 30 and the touch screen display controller 60, the touch screen display controller 60 is electrically connected to the temperature control sensing signal processor 70, the temperature control sensing signal processor 70 is electrically connected to the induction heating power supply 14, and the low-temperature temperature measuring gun 12 and the high-temperature temperature measuring gun 13 are both electrically connected to the induction heating power supply 14; in this embodiment, the frequency conversion controller 50 is electrically connected to the servo motor 30 and the touch screen display controller 60, the touch screen display controller 60 is electrically connected to the temperature control sensing signal processor 70, the temperature control sensing signal processor 70 is electrically connected to the induction heating power supply 14, and the low-temperature temperature measuring gun 12 and the high-temperature temperature measuring gun 13 are both electrically connected to the induction heating power supply 14

[0033] Among them, the cooling fan 11 cools the pipe to speed up the experimental efficiency; the low-temperature temperature measuring gun 12 is used to feed back the experimental sample pipe 35 to the temperature control sensing signal processor 70 for reheating after reaching the lowest temperature; the high-temperature temperature measuring gun 13 is used to feed back the temperature to the temperature control sensing signal processor 70 to intelligently adjust the power after the temperature reaches the set maximum temperature to achieve the effect of heat preservation; the frequency conversion controller 50 controls the moving speed, forward rotation, reverse rotation and other parameters of the slide 20 through the servo motor 30; the touch screen display controller 60 is used to set the experimental parameters and display the number of cycles; the temperature control sensing signal processor 70 is used to comprehensively adjust the temperature and heating power.

[0034] In this embodiment, the induction coil 40 is connected to the induction heating power supply 14 through the connecting rod 15, so that the induction coil 40 is located on the support platform 10; thereby, the support rod 33 on the transverse support block 32 can drive the experimental sample tube 35 to reciprocate inside and outside the induction coil 40, that is, the temperature is increased inside the induction coil 40 and the temperature is reduced outside the induction coil 40.

[0035] In addition, support legs 16 are disposed at four corners of the bottom of the support platform 10 .

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the technical solutions of the present invention have been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high temperature alloy pipe thermal fatigue test device, characterized in that: The invention comprises a support platform (10), a slide platform (20) arranged on the support platform (10), one end of the slide platform (20) is connected to a servo motor (30), and the other end is provided with an induction coil (40); a cooling fan (11) and a low-temperature temperature measuring gun (12) are provided on the lower side of the slide platform (20) and the support platform (10); a high-temperature temperature measuring gun (13) is provided on the lower side of the induction coil (40) and the support platform (10), and an induction heating power supply (14) is provided on the lower side of the high-temperature temperature measuring gun (13) and the support platform (10); the induction coil (40) is connected to the induction heating power supply (14) through a connecting rod (15), so that the induction coil (40) is located on the support platform (10).

2. The high temperature alloy pipe thermal fatigue test device according to claim 1, characterized in that: The slide (20) comprises a slide rail (21), a left ball screw seat (22) and a right ball screw seat (23) arranged at both ends of the slide rail (21), a screw rod (24) arranged on the left ball screw seat (22) and the right ball screw seat (23), and a slider (25) arranged on the screw rod (24); one end of the screw rod (24) passes through the left ball screw seat (21) or the right ball screw seat (23) and is fixedly connected to the output shaft of the servo motor (30).

3. The high temperature alloy pipe thermal fatigue test device according to claim 2, characterized in that: The slide block (25) is fixedly connected with a slide seat (26), and a slide groove (27) matching the slide rail (21) is provided at the bottom of the slide seat (26).

4. The high temperature alloy pipe thermal fatigue test device according to claim 3, characterized in that: A vertical support block (31) is provided on the slide seat (26), and a transverse support block (32) is connected to the top of the vertical support block (31).

5. The high temperature alloy pipe thermal fatigue test device according to claim 4, characterized in that: A support rod (33) is provided on the top of the transverse support block (32), and one end of the support rod (33) extends out of the transverse support block (32) and is connected to a plurality of support sheets (34).

6. The high temperature alloy pipe thermal fatigue test device according to claim 5, characterized in that: A plurality of support sheets (34) are evenly arranged on the support rod (33).

7. The high temperature alloy pipe thermal fatigue test device according to claim 5, characterized in that: The support platform (10) is provided with a frequency conversion controller (50), a touch screen display controller (60), and a temperature control sensing signal processor (70).

8. The high temperature alloy pipe thermal fatigue test device according to claim 7, characterized in that: The frequency conversion controller (50) is electrically connected to the servo motor (30) and the touch screen display controller (60), the touch screen display controller (60) is electrically connected to the temperature control sensing signal processor (70), and the temperature control sensing signal processor (70) is electrically connected to the induction heating power supply (14).

9. The high temperature alloy pipe thermal fatigue test device according to claim 8, characterized in that: The low-temperature temperature measuring gun (12) and the high-temperature temperature measuring gun (13) are both electrically connected to the induction heating power supply (14).

10. The high temperature alloy pipe thermal fatigue test device according to claim 1, characterized in that: Support feet (16) are provided at the four corners of the bottom of the support platform (10).

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