Temperature measurement crystal calibration device and calibration system

Abstract

The utility model provides a temperature measurement crystal calibration device and calibration system. The temperature measurement crystal calibration device can be fixedly connected to a heating furnace, the heating furnace comprises an inlet end wall, and an inlet is formed in the inlet end wall; the temperature measuring crystal calibration device comprises a mounting rod, one end of which is provided with a first hole for fixedly connecting a thermocouple, and the other end of which is provided with a second hole for arranging a temperature measuring crystal; one end of the protective cover is fixedly connected to the inlet end wall, the other end of the protective cover extends into the heating furnace, a cavity is formed in the protective cover and used for containing the mounting rod, and a ventilation opening is formed in the side wall of the end, extending into the heating furnace, of the protective cover; and the moving mechanism is fixedly connected to the inlet end wall and can drive the mounting rod to move in and out of the protective cover.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of crystal temperature measurement, and particularly relates to a temperature measurement crystal calibration device and a calibration system. BACKGROUND

[0002] A temperature measurement crystal is a single crystal used for temperature measurement, which is small in size and can be applied to temperature measurement of a turbine blade of an aero-engine. The temperature measurement principle is a temperature measurement technology established by a functional relationship among three parameters of a maximum temperature duration (t), a maximum temperature (T) and a crystal parameter (2θ). Before the temperature measurement crystal is used, a large amount of calibration work needs to be carried out to obtain a calibration curve of the relationship among the three parameters, which is used as a standard for obtaining temperature measurement data after the temperature measurement crystal is tested.

[0003] The calibration work of the temperature measurement crystal needs to anneal thousands of temperature measurement crystals. The calibration test is mainly carried out in a standard high-temperature furnace. Since the temperature measurement crystal is small in size (for example, about 0.2mm*0.2mm*0.3mm), the installation and dismounting process occupies a large amount of time in the calibration test. In addition, the temperature measurement crystal is generally fixed by using high-temperature glue or a protective patch during installation in the furnace, which is easy to cause damage to the temperature measurement crystal. In addition, in the calibration test, the temperature measurement crystal and a thermocouple also need to be accurately adjusted and positioned in the furnace. The arrangement of the temperature measurement crystal and the thermocouple is also easy to affect the airflow in the furnace.

[0004] Therefore, there is still a need to develop a temperature measurement crystal calibration device and a calibration system in the field to at least partially solve the above technical problems. CONTENT OF THE INVENTION

[0005] The present application aims to provide a temperature measurement crystal calibration device.

[0006] Another object of the present application is to provide a temperature measurement crystal calibration system.

[0007] According to one aspect of the present application, a temperature measurement crystal calibration device can be fixedly connected to a heating furnace, the heating furnace comprising an inlet end wall, and the inlet end wall is provided with an inlet. The temperature measurement crystal calibration device comprises: an installation rod, one end of which is provided with a first hole for fixedly connecting a thermocouple, and the other end is provided with a second hole for arranging a temperature measurement crystal; a protective cover, one end of which is fixedly connected to the inlet end wall, and the other end extends into the heating furnace and is provided with a cavity for containing the installation rod, and a ventilation opening is formed in the side wall of the end extending into the heating furnace; and a moving mechanism, which is fixedly connected to the inlet end wall and can drive the installation rod to move into and out of the protective cover.

[0008] The installation rod design enables the thermocouple and the temperature measuring crystal to be respectively arranged in the first hole and the second hole; during annealing test for calibration, the thermocouple can be kept in the first hole, and the temperature measuring crystal only needs to be placed at the bottom of the second hole for installation, and the temperature measuring crystal only needs to be removed by moving the installation rod out of the heating furnace and turning over to make the temperature measuring crystal fall out, so that the installation and removal efficiency of the temperature measuring crystal is greatly improved; the protective cover design enables the installation rod to move inside the cavity thereof, and the air vent is used for air circulation, which on the one hand significantly reduces the disturbance of the movement of the installation rod to the temperature in the furnace, and on the other hand improves the safety and stability of the installation and arrangement of the installation rod, the temperature measuring crystal and the thermocouple in the furnace; furthermore, the temperature measuring crystal can also be reinforced without high-temperature glue and protective patches, which can not only avoid damage to the temperature measuring crystal during the disassembly process when high-temperature glue and protective patches are used, but also further improve the installation, disassembly and calibration test efficiency.

[0009] In one or more embodiments, the moving mechanism comprises a connecting pipe fixedly connected at one end to the inlet end wall and extending to the outside of the heating furnace at the other end; a connecting cover capable of being threadedly connected with the connecting pipe; wherein the installation rod is fixedly connected to the end wall of the connecting cover; the installation rod can pass through the inlet and move in and out of the protective cover by rotating the connecting cover.

[0010] In one or more embodiments, the moving mechanism is provided with a scale line for representing the axial position of the temperature measuring crystal and the thermocouple inside the heating furnace.

[0011] In one or more embodiments, the temperature measuring crystal calibration device further comprises an installation ring for fixedly connecting the temperature measuring crystal calibration device to the inlet end wall and opening a third hole for the installation rod to pass through, the third hole having a diameter smaller than that of the inlet; the protective cover and the moving mechanism are fixedly connected to the installation ring.

[0012] In one or more embodiments, the temperature measuring crystal calibration device further comprises a sealing ring fixedly connected between the installation ring and the inlet end wall, the inner ring of which has the same diameter as the inlet.

[0013] In one or more embodiments, the connecting cover is provided with a connecting block inside, the connecting block and the end wall of the connecting cover are fixedly connected through a support rod, the connecting block is threadedly connected with the inner side wall of the connecting pipe, and a fourth hole is opened for the installation rod to pass through.

[0014] In one or more embodiments, the bottom of the first hole is provided with a groove for clamping and fixing the measuring end of the thermocouple.

[0015] In one or more embodiments, the mounting rod is provided with a fifth hole, which communicates the first hole and the bottom of the second hole.

[0016] In one or more embodiments, the heating furnace is a horizontal furnace, and the mounting rod moves horizontally in the heating furnace.

[0017] According to another aspect of the present application, a temperature measuring crystal calibration system comprises the temperature measuring crystal calibration device, the heating furnace, the thermocouple, and the temperature measuring crystal as described in the above embodiments; wherein the temperature measuring crystal calibration device is fixedly connected to the heating furnace, the measuring end of the thermocouple is fixedly connected to the first hole, and the temperature measuring crystal can be arranged in the second hole; the temperature measuring crystal calibration system comprises a first state and a second state; in the first state, the moving mechanism drives the mounting rod to move into the protective cover for calibration test of the temperature measuring crystal; in the second state, the moving mechanism drives the mounting rod to move out of the protective cover for dismounting the temperature measuring crystal that has been calibrated and mounting the temperature measuring crystal that has not been calibrated. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and other features, properties, and advantages of the present application will become more apparent by the following description with reference to the accompanying drawings and embodiments, in which the same reference numerals are used throughout and identical features are denoted by the same reference numerals, it is noted that these drawings are merely examples, which are not drawn in accordance with the scale, and should not be used to limit the scope of protection actually claimed by the present application, wherein:

[0019] Figure 1 Structure diagram of the temperature measuring crystal calibration device according to an embodiment.

[0020] Figure 2 Structure diagram of the temperature measuring crystal calibration device according to an embodiment.

[0021] Figure 3 Structure diagram of the temperature measuring crystal calibration device according to an embodiment. Figure 2 Structure diagram of the temperature measuring crystal calibration device according to an embodiment.

[0022] Explanation of reference numerals:

[0023] 1. Temperature measuring crystal calibration device; 2. Thermocouple; 3. Temperature measuring crystal;

[0024] 10. Inlet end wall; 11. Inlet;

[0025] 20. Mounting rod; 21. First hole; 22. Second hole; 23. Groove; 24. Fifth hole;

[0026] 30. Protective cover; 31. Vent;

[0027] 40. moving mechanism; 41. connecting pipe; 42. connecting cover; 43. connecting block; 44. supporting rod; 45. fourth hole;

[0028] 50. mounting ring; 51. third hole;

[0029] 60. sealing ring. DETAILED DESCRIPTION

[0030] Reference will now be made in detail to various embodiments of the present application, examples of which are illustrated in the accompanying drawings and described below. While the present application will be described in conjunction with the exemplary embodiments, it should be understood that the present application is not limited to those exemplary embodiments. On the contrary, the present application is intended to cover all alternatives, modifications, equivalents and other embodiments that can be included within the spirit and scope of the present application as defined by the appended claims.

[0031] In the following description, the orientation or positional relationship indicated by "upper", "lower", "front", "back", "inner", "outer" or other orientation terms is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or component referred to must have a particular orientation, be constructed and / or implemented in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0032] The present application uses certain terms to describe the embodiments of the present application. As "one embodiment" and / or "an embodiment" means a certain feature, structure or characteristic that is related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that the "one embodiment" or "an embodiment" mentioned in different places in the specification does not necessarily refer to the same embodiment. In addition, certain features, structures or characteristics in one or more embodiments of the present application can be properly combined.

[0033] As introduced above, the technical problems existing in the prior art at present include but are not limited to: 1. The temperature measuring crystal is not easy to install and disassemble, which affects the calibration test efficiency; 2. The installation methods such as high-temperature glue and protective patch are easy to cause damage to the temperature measuring crystal; 3. The precise adjustment and positioning of the temperature measuring crystal and thermocouple in the furnace cannot be realized; 4. The installation and arrangement of the temperature measuring crystal and thermocouple in the furnace are easy to affect the airflow in the furnace, etc.

[0034] Reference Figures 1 to 3The inventor of the present application proposes a temperature measuring crystal calibration device 1 which can be fixedly connected to a heating furnace, the heating furnace comprising an inlet end wall 10, the inlet end wall 10 being provided with an inlet 11; the temperature measuring crystal calibration device 1 comprising: a mounting rod 20, one end of which is provided with a first hole 21 for fixedly connecting a thermocouple 2, the other end of which is provided with a second hole 22 for arranging a temperature measuring crystal 3; a protective cover 30, one end of which is fixedly connected to the inlet end wall 10, the other end of which extends into the heating furnace, and is provided with a cavity for containing the mounting rod 20, and is provided with a ventilation opening 31 in the side wall of the end extending into the heating furnace; a moving mechanism 40, which is fixedly connected to the inlet end wall 10 and can drive the mounting rod 20 to move into and out of the protective cover 30.

[0035] Specifically, the inlet 11, the mounting rod 20 and the protective cover 30 can be coaxially arranged; the mounting rod 20 moves into and out of the heating furnace along its length direction; the first hole 21 and the second hole 22 can both be blind holes provided along the length direction, and the bottoms of the first hole 21 and the second hole 22 are both arranged in the area of the side of the mounting rod 20 extending into the heating furnace, and the bottoms of the first hole 21 and the second hole 22 should be as close as possible, so that the temperature measuring crystal 3 and the measuring end of the thermocouple 2 are basically located at the same position inside the mounting rod 20, the temperature measured by the thermocouple 2 is the temperature in the furnace where the temperature measuring crystal 3 is located, and the error can be ignored, so the temperature value measured by the thermocouple 2 is used for the calibration of the temperature measuring characteristics of the temperature measuring crystal 3, which is beneficial to ensure the accuracy of the calibration test; the ventilation opening 31 can be provided at the lower side of the side wall of the protective cover 30.

[0036] The design of the mounting rod 20 enables the thermocouple 2 and the temperature measuring crystal 3 to be arranged in the first hole 21 and the second hole 22, respectively; during the annealing test for calibration, the thermocouple 2 can be kept in the first hole 21, and the temperature measuring crystal 3 only needs to be placed at the bottom of the second hole 22, and the temperature measuring crystal 3 can be removed by moving the mounting rod 20 out of the heating furnace and turning it over, which greatly improves the installation, removal and calibration efficiency of the temperature measuring crystal 3; the design of the protective cover 30 enables the mounting rod 20 to move inside the cavity, and air flows through the ventilation opening 31, which significantly reduces the disturbance to the air flow and temperature field in the furnace when the mounting rod 20 is moved; on the other hand, it improves the safety and stability of the installation and arrangement of the mounting rod 20, the temperature measuring crystal 3 and the thermocouple 2 in the furnace; furthermore, the temperature measuring crystal 3 does not need to be reinforced by high-temperature glue or protective patches, which can avoid damaging the temperature measuring crystal 3 and further improve the installation and removal efficiency.

[0037] In one or more embodiments, the moving mechanism 40 comprises a connecting pipe 41, one end of which is fixedly connected to the inlet end wall 10, and the other end of which extends to the outside of the heating furnace; a connecting cover 42 which can be threadedly connected to the connecting pipe 41; wherein the mounting rod 20 is fixedly connected to the end wall of the connecting cover 42; the mounting rod 20 can pass through the inlet 11 and move in and out of the protective cover 30 by rotating the connecting cover 42; such a design provides a moving mechanism 40 which is convenient to install and disassemble, has a simple structure and is easy to manufacture and process.

[0038] Optionally, the connecting cover 42 can be sleeved on the outer circumferential side of the connecting pipe 41, the outer side wall surface of the connecting pipe 41 can be provided with external threads, and the inner side wall surface of the connecting cover 42 can be provided with internal threads, which can be cooperatively connected.

[0039] In one or more embodiments, the moving mechanism 40 is provided with a scale line for representing the axial position of the temperature measuring crystal 3 and the thermocouple 2 inside the heating furnace. The term “axial” refers to the direction in which the moving mechanism drives the mounting rod 20 to move inside the heating furnace, which can also be the axial direction of the connecting pipe and the connecting cover shown in the figure.

[0040] Specifically, the scale line can be provided on the connecting pipe 41, which can measure the relative movement distance between the connecting cover 42 and the connecting pipe 41, and further represent the axial position of the mounting rod 20 fixedly connected to the connecting cover 42, as well as the temperature measuring crystal 3 and the thermocouple 2 inside the heating furnace, so as to realize accurate adjustment and positioning of the axial position of the temperature measuring crystal 3 and the thermocouple 2 inside the heating furnace.

[0041] As shown in FIGS. 1, 2 and 3, Figure 1 , Figure 2 In one or more embodiments, the temperature measuring crystal calibration device 1 further comprises a mounting ring 50 for fixedly connecting the temperature measuring crystal calibration device 1 to the inlet end wall 10, and a third hole 51 is provided to allow the mounting rod 20 to pass through, and the third hole 51 has a diameter smaller than that of the inlet 11; the protective cover 30 and the moving mechanism 40 are fixedly connected to the mounting ring 50; specifically, the connecting pipe 41 of the moving mechanism 40 is fixedly connected to the mounting ring 50; such a design provides a connecting structure for mounting and fixing the temperature measuring crystal calibration device 1 to the heating furnace, and provides the mounting position of the moving mechanism 40 and the protective cover 30, which has a simple and reasonable structure; the mounting ring 50 provides the third hole 51, which can also be used to support the mounting rod 20, so as to ensure the stability of the movement of the mounting rod 20 and the accurate positioning of the mounting rod 20 inside the heating furnace.

[0042] As shown in Figure 1 , Figure 2 in one or more embodiments, the temperature measuring crystal calibration device 1 further comprises a sealing ring 60 fixedly connected between the mounting ring 50 and the inlet end wall 10, and the inner ring of the sealing ring 60 has the same diameter as the inlet 11. Such a design helps to improve the sealing of the heating furnace.

[0043] As shown in Figure 1 , Figure 2 in one or more embodiments, the connecting cover 42 is provided with a connecting block 43 inside, the connecting block 43 is fixedly connected with the end wall of the connecting cover 42 through a support rod 44, the connecting block 43 is threadedly connected with the inner side wall surface of the connecting pipe 41, and a fourth hole 45 is provided to pass through the mounting rod 20. Optionally, the outer side wall surface of the connecting block 43 is provided with external threads, and the inner side wall surface of the connecting pipe 41 is provided with internal threads, which can be connected in cooperation.

[0044] The use of the connecting block 43 can improve the stability of the movement of the mounting rod 20 in the heating furnace, and the fourth hole 45 can also be used to support the mounting rod 20, improve the structural rigidity, and ensure the accurate positioning of the mounting rod 20 in the heating furnace.

[0045] In one or more embodiments, the number of support rods 44 is 2 to 4. Such a design has good bearing effect, stable and reliable structure, and is more conducive to manufacturing and processing.

[0046] As shown in Figure 3 in one or more embodiments, the bottom of the first hole 21 is provided with a groove 23 for clamping and fixing the measuring end of the thermocouple 2. Such a design provides a mounting and fixing structure for the thermocouple 2.

[0047] As shown in Figure 3 in one or more embodiments, the mounting rod 20 is provided with a fifth hole 24 which communicates the bottom of the first hole 21 and the second hole 22. By communicating the first hole 21 and the second hole 22 through the fifth hole 24, the accuracy of the thermocouple 2 measuring the temperature in the furnace where the temperature measuring crystal 3 is located can be ensured without affecting the installation and fixation of the temperature measuring crystal 3 and the thermocouple 2; the measuring end of the thermocouple 2 can also pass through the fifth hole 24.

[0048] In one or more embodiments, the heating furnace is a horizontal furnace, and the mounting rod 20 moves horizontally in the heating furnace; in this way, the second hole 22 can be horizontally arranged at the end of the mounting rod 20, which is beneficial to ensure the stability of the temperature measuring crystal 3 arranged in the second hole 22 and is also easy to manufacture and process.

[0049] To help understand the temperature measuring crystal calibration device 1 provided by the present application, a calibration test method thereof in one or more embodiments is provided, which comprises the following steps:

[0050] S1. The temperature measuring crystal calibration device 1 is fixedly connected to the heating furnace.

[0051] S2. The thermocouple 2 is fixedly connected to the first hole 21.

[0052] S3. The temperature measuring crystal 3 which has not undergone calibration test is placed in the second hole 22.

[0053] S4. The connecting cover 42 and the connecting pipe 41 are threadedly connected, the mounting rod 20 passes through the inlet 11, and the connecting cover 42 is rotated to adjust and position the axial positions of the temperature measuring crystal 3 and the thermocouple 2 in the furnace.

[0054] S5. The calibration test of the temperature measuring crystal 3 is carried out.

[0055] S6. The connecting cover 42 is rotated, the mounting rod 20 is removed from the furnace, and the temperature measuring crystal 3 which has undergone calibration test is flipped out.

[0056] S7. The steps S3 to S6 are repeated until all the temperature measuring crystals 3 which need to undergo calibration test complete calibration test.

[0057] According to another aspect of the present application, a temperature measuring crystal calibration system comprises the temperature measuring crystal calibration device 1, the heating furnace, the thermocouple 2, and the temperature measuring crystal 3 described in the above embodiments; wherein the temperature measuring crystal calibration device 1 is fixedly connected to the heating furnace, the measuring end of the thermocouple 2 is fixedly connected to the first hole 21, and the temperature measuring crystal 3 can be arranged in the second hole 22; the temperature measuring crystal calibration system comprises a first state and a second state; in the first state, the moving mechanism 40 drives the mounting rod 20 to move into the protective cover 30 for calibration test of the temperature measuring crystal 3; in the second state, the moving mechanism 40 drives the mounting rod 20 to move out of the protective cover 30 for dismounting the temperature measuring crystal 3 which has undergone calibration test and mounting the temperature measuring crystal 3 which has not undergone calibration test.

[0058] Optionally, the size of the temperature measuring crystal is about 0.2mm*0.2mm*0.3mm.

[0059] Specifically, in one or more embodiments, in the first state, the connecting pipe 41 and the connecting cover 42 are threadedly connected, the axial position of the mounting rod 20 inside the heating furnace is adjusted and positioned by rotating the connecting cover 42, for calibration test of the temperature measuring crystal 3; in the second state, the connecting pipe 41 and the connecting cover 42 are separated, and the mounting rod 20 is removed from the heating furnace, for dismounting the temperature measuring crystal 3 that has undergone calibration test and mounting the temperature measuring crystal 3 that has not undergone calibration test.

[0060] In summary, the beneficial effects of the present application include one or a combination of the following:

[0061] 1. The design of the mounting rod enables the thermocouple and the temperature measuring crystal to be respectively arranged in the first hole and the second hole; during the annealing test for calibration, the thermocouple can be kept in the first hole, and the temperature measuring crystal only needs to be placed at the bottom of the second hole for mounting, and the temperature measuring crystal only needs to be removed by removing the mounting rod from the heating furnace and turning it over to pour out the temperature measuring crystal, which greatly improves the mounting, dismounting and calibration test efficiency of the temperature measuring crystal; the design of the protective cover enables the mounting rod to move inside the cavity, and air flows through the air vent, which on the one hand significantly reduces the disturbance to the air flow and temperature field in the furnace when moving the mounting rod, and on the other hand improves the safety and stability of the mounting rod, the temperature measuring crystal and the thermocouple in the furnace; furthermore, the temperature measuring crystal does not need to be reinforced by high-temperature glue, protective patches and other methods, which can avoid damage to the temperature measuring crystal caused by these reinforcement methods, and further improve the mounting and dismounting efficiency.

[0062] 2. The scale line can measure the relative movement distance between the connecting cover and the connecting pipe, and further represent the axial position of the mounting rod fixedly connected to the connecting cover, the temperature measuring crystal and the thermocouple in the heating furnace, so as to realize accurate adjustment and positioning of the axial position of the temperature measuring crystal and the thermocouple in the heating furnace.

[0063] 3. The design of the connecting block can improve the stability of the movement of the mounting rod in the heating furnace, and the fourth hole can also be used to support the mounting rod to improve the structural rigidity and ensure the accurate positioning of the mounting rod in the heating furnace.

[0064] Although the present application is disclosed with reference to the preferred embodiments above, it is not intended to limit the present application, and any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of the present application. Therefore, any modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application, without departing from the technical solutions of the present application, fall within the protection scope defined by the claims of the present application.

Claims

1. A temperature measuring crystal calibration device (1) capable of being fixedly connected to a heating furnace, the heating furnace comprising an inlet end wall (10) which is provided with an inlet (11); the temperature measuring crystal calibration device (1) is characterized in that, The temperature measuring crystal calibration device (1) comprises: a mounting rod (20) having a first hole (21) at one end for fixing and connecting a thermocouple (2) and a second hole (22) at the other end for arranging a temperature measuring crystal (3); a protective cover (30) fixedly connected to the inlet end wall (10) and extending into the heating furnace, and provided with a cavity for containing the mounting rod (20), and a ventilation opening (31) is formed in the side wall of the end extending into the heating furnace; a moving mechanism (40) fixedly connected to the inlet end wall (10) and capable of driving the mounting rod (20) to move into and out of the protective cover (30).

2. The temperature measuring crystal calibration device (1) according to claim 1, characterized in that The moving mechanism (40) comprises: a connecting pipe (41) fixedly connected to the inlet end wall (10) and extending out of the heating furnace; a connecting cover (42) capable of being threadedly connected with the connecting pipe (41); wherein the mounting rod (20) is fixedly connected to the end wall of the connecting cover (42); by rotating the connecting cover (42), the mounting rod (20) can pass through the inlet (11) and move into and out of the protective cover (30).

3. The temperature measuring crystal calibration device (1) according to claim 1, characterized in that The moving mechanism (40) is provided with a scale line for indicating the axial position of the temperature measuring crystal (3) and the thermocouple (2) in the heating furnace.

4. The temperature measuring crystal calibration device (1) according to claim 1, characterized in that Further comprising: a mounting ring (50) for fixedly connecting the temperature measuring crystal calibration device (1) to the inlet end wall (10) and provided with a third hole (51) for the mounting rod (20) to pass through, the third hole (51) having a diameter smaller than that of the inlet (11); the protective cover (30) and the moving mechanism (40) are fixedly connected to the mounting ring (50).

5. The temperature measuring crystal calibration device (1) according to claim 4, characterized in that Further comprising: a sealing ring (60) fixedly connected between the mounting ring (50) and the inlet end wall (10), and having an inner circle with the same diameter as the inlet (11).

6. The temperature measuring crystal calibration device (1) according to claim 2, characterized in that The connecting cover (42) is provided with a connecting block (43) fixedly connected to the end wall of the connecting cover (42) through a support rod (44), the connecting block (43) is threadedly connected with the inner side wall of the connecting pipe (41) and provided with a fourth hole (45) for the mounting rod (20) to pass through.

7. The temperature measuring crystal calibration device (1) according to claim 1, characterized in that The bottom of the first hole (21) is provided with a groove (23) for clamping and fixing the measuring end of the thermocouple (2).

8. The temperature measuring crystal calibration device (1) according to claim 1, characterized in that The mounting rod (20) is provided with a fifth hole (24) connecting the bottoms of the first hole (21) and the second hole (22).

9. The temperature measuring crystal calibration device (1) according to claim 1, characterized in that The heating furnace is a horizontal furnace, and the mounting rod (20) moves horizontally in the heating furnace.

10. A temperature measuring crystal calibration system, characterized by, The temperature measuring crystal calibration device (1), the heating furnace, the thermocouple (2) and the temperature measuring crystal (3) according to any one of claims 1 to 9; wherein the temperature measuring crystal calibration device (1) is fixedly connected to the heating furnace, the measuring end of the thermocouple (2) is fixedly connected to the first hole (21), and the temperature measuring crystal (3) can be arranged in the second hole (22); the temperature measuring crystal calibration system comprises a first state and a second state; ​ In the first state, the moving mechanism (40) drives the mounting rod (20) to move into the protective cover (30) for calibration test of the temperature measuring crystal (3); In the second state, the moving mechanism (40) drives the mounting rod (20) to move out of the protective cover (30) for dismounting the temperature measuring crystal (3) which has been calibrated and mounting the temperature measuring crystal (3) which has not been calibrated.

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