A high-temperature mechanical test direct-insertion temperature measuring device

Abstract

The present invention provides a high-temperature mechanical test direct-insertion temperature measuring device, comprising a base, a pre-tightening assembly and an angle adjustment assembly provided above the base, the pre-tightening assembly comprising a sleeve, a first spring, a sleeve, a guide tube and a thermocouple; the sleeve is slidably connected to the interior of the sleeve, the first spring is provided inside the sleeve, one end of the first spring is fixedly connected to the sleeve, and the guide tube is fixedly connected to one side of the sleeve. The present invention adopts a direct-insertion structure, which eliminates the need for bundling, thereby meeting the national standard requirement that the temperature measurement point must be on the test piece and eliminating the need for bundling the test piece; by providing a high-temperature Y-shaped positioning tube, the thermocouple is prevented from slipping when in point-to-point contact with the test piece, thereby preventing the temperature measurement point from being inaccurate; the upper and lower thermocouples of different lengths can be angle-adjusted to meet the temperature measurement requirements of test pieces of different specifications.

Description

Technical Field

[0001] The present invention relates to a temperature measuring device, in particular to a high-temperature mechanical test direct-insertion temperature measuring device, belonging to the technical field of high-temperature thermodynamics testing. Background Art

[0002] High-temperature tensile testing is a tensile test conducted at temperatures above room temperature. In addition to stress and strain, temperature and time are also important parameters to consider during high-temperature tensile testing. Temperature significantly influences high-temperature tensile properties, so strict temperature control is required. The specimen is typically heated in an electric furnace, with ample soaking zone within the furnace's workspace and instrumentation for automatic temperature control.

[0003] Mechanical tests of high-temperature materials generally use thermocouples to measure temperature. According to national standards, the temperature measurement point must be on the surface of the specimen, otherwise the measured temperature cannot reflect the actual temperature of the specimen, affecting the test results. In order to meet national standards, two methods are generally used. The first is to use high-temperature alloy wire or ceramic fiber rope to bundle and apply it to the surface of the specimen for temperature measurement. The second is to use direct insertion to press the thermocouple against the surface of the specimen for temperature measurement. However, the above two methods have the following disadvantages: the alloy wire used for bundling thermocouples is expensive, which is not conducive to test activities and increases costs; if ceramic fiber rope is used for bundling, since the material is fibrous, it is easy to be inhaled into the body and cause harm; and in actual testing, most tests use round rod-shaped specimens, and the front contact of the direct-insertion thermocouple is ball-shaped. When the thermocouple is placed on the specimen, it is in point-to-point contact. In the state, during the heating process, the sample will have thermal expansion, which will cause the sample shape to change. At this time, there is a risk of slippage when the thermocouple contacts the sample. When the thermocouple is not against the sample, the temperature measuring point will be deviated. At this time, the measured temperature is not the temperature of the sample surface; the existing direct insertion temperature measurement method has a fixed distance between the temperature measuring points and cannot be changed, so the effect is poor; at the same time, the length of the parallel section of the sample is not constant. When encountering a sample with a short parallel section, the temperature points measured by the upper and lower thermocouples have exceeded the parallel section. The temperatures of the upper and lower sections cannot reflect the temperature of the parallel section, and cannot reflect the real test results. For this reason, a direct insertion temperature measuring device for high-temperature mechanical tests is proposed. Summary of the Invention

[0004] In view of this, the present invention hopes to provide a high-temperature mechanical test direct-insertion temperature measuring device to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial option.

[0005] The technical solution of the embodiment of the present invention is achieved as follows: a high-temperature mechanical test direct-insertion temperature measuring device includes a base, a pre-tightening assembly and an angle adjustment assembly are provided above the base, and the pre-tightening assembly includes a sleeve, a first spring, a sliding sleeve, a guide tube and a thermocouple;

[0006] The sliding sleeve is slidably connected to the interior of the sleeve, the first spring is disposed inside the sleeve, one end of the first spring is fixedly connected to the sliding sleeve, the guide tube is fixedly connected to one side of the sliding sleeve, and the thermocouple is fixedly connected to the interior of the sliding sleeve;

[0007] The angle adjustment assembly includes a third threaded rod, a second slider, a second spring, a rotating plate and a mounting plate;

[0008] The second sliding block is rotatably connected to one end of the third threaded rod, four second springs are symmetrically fixedly connected to one side of the mounting plate, and the rotating plate is fixedly connected to one end of the second spring.

[0009] Further preferably, a forward and backward moving component is provided on the rear surface of the base, a locking component is provided on the top of the forward and backward moving component, an up and down adjustment component is provided on the top of the locking component, a test piece is provided at one end of the pre-tightening component, and a high-temperature furnace is provided on the outside of the test piece.

[0010] Further preferably, the forward and backward moving assembly includes a first mounting seat, a second mounting seat, two first guide rods, a first slider, a first threaded rod and a hand wheel;

[0011] The first mounting seat is fixedly connected to the rear surface of the base through bolts, and the second mounting seat is fixedly connected to the rear surface of the first mounting seat.

[0012] Further preferably, the second mounting seat is symmetrically fixedly connected to one end of the two first guide rods on one side close to the base, the first slider is slidably connected to the outer side wall of the first guide rod, the first threaded rod is rotatably connected to the side of the second mounting seat close to the base, the handwheel is fixedly connected to the end of the first threaded rod away from the base, and the first slider is slidably connected to the outer side wall of the first threaded rod.

[0013] Further preferably, the locking assembly includes a guide post, a third mounting seat, a locking knob and a fixing block;

[0014] The third mounting seat is fixedly connected to the top of the second mounting seat, and the guide column is slidably connected to the inside of the third mounting seat.

[0015] Further preferably, the fixing block is fixedly connected to one end of the guide post, and the locking knob is threadedly connected to the front surface of the fixing block.

[0016] Further preferably, the sleeve is slidably connected to the interior of the fixing block.

[0017] Further preferably, the up and down adjustment assembly includes a second threaded rod, a fourth mounting seat, a connecting plate and a second guide rod;

[0018] The top of the third mounting seat is symmetrically fixedly connected to two second guide rods, and the fourth mounting seat is slidably connected to the outer side wall of the second guide rod.

[0019] Further preferably, the second threaded rod is rotatably connected to the top of the fourth mounting seat, and the connecting plate is fixedly connected to the front surface of the fourth mounting seat.

[0020] Further preferably, the third threaded rod is rotatably connected to the inside of the connecting plate, the second slider is slidably connected to the rear surface of the connecting plate, the mounting plate is fixedly connected to the rear surface of the connecting plate, the rotating plate is fixedly connected to the outer wall of the guide column, and the guide column is rotatably connected to the inside of the connecting plate.

[0021] The embodiment of the present invention adopts the above technical solution, which has the following advantages:

[0022] 1. The present invention adopts a direct plug-in structure and does not require bundling, which satisfies the national standard requirement that the temperature measurement point must be on the test piece and eliminates the need to bundle the test piece.

[0023] Second, the present invention is designed with a high-temperature Y-shaped positioning tube to prevent the thermocouple from slipping when in point-to-point contact with the test piece, which would cause inaccurate temperature measurement points.

[0024] 3. The present invention is aimed at different lengths, and the angles of the upper and lower thermocouples can be adjusted to meet the temperature measurement needs of test pieces of different specifications.

[0025] Fourth, the present invention can realize front and rear fine adjustment according to the thickness of the test piece, control the preload force, and prevent the front top preload force from affecting the test results.

[0026] 5. When facing test pieces of different specifications, the present invention can fine-tune the device according to actual conditions to meet the test requirements, without the need to move the main support of the high-temperature furnace and the height of the high temperature, which greatly reduces unnecessary physical work.

[0027] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 It is a structural diagram of the present invention;

[0030] Figure 2 It is a main structural diagram of the present invention;

[0031] Figure 3 It is a top view of the structure of the present invention;

[0032] Figure 4 This is a schematic diagram of a long test piece test of the present invention;

[0033] Figure 5 This is a schematic diagram of a short test piece test of the present invention;

[0034] Figure 6 This is a top view of the structure during testing of the present invention;

[0035] Figure 7 This is an enlarged structural diagram of point A of the present invention.

[0036] Figure markings: 10, base; 20, forward and backward moving assembly; 21, first mounting seat; 22, second mounting seat; 23, first guide rod; 24, first slider; 25, first threaded rod; 26, handwheel; 30, pre-tightening assembly; 31, sleeve; 32, first spring; 33, sleeve; 34, guide tube; 35, thermocouple; 40, locking assembly; 41, guide column; 42, third mounting seat; 43, locking knob; 44, fixing block; 50, up and down adjustment assembly; 51, second threaded rod; 52, fourth mounting seat; 53, connecting plate; 54, second guide rod; 60, angle adjustment assembly; 61, third threaded rod; 62, second slider; 63, second spring; 64, rotating plate; 65, mounting plate; 70, high temperature furnace; 90, test piece. DETAILED DESCRIPTION

[0037] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are to be considered as illustrative in nature and not restrictive.

[0038] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0039] like Figure 1 As shown in FIG-7 , an embodiment of the present invention provides a high-temperature mechanical test direct-insertion temperature measuring device, comprising a base 10 , above which are disposed a pre-tightening assembly 30 and an angle adjustment assembly 60 . The pre-tightening assembly 30 comprises a sleeve 31 , a first spring 32 , a sliding sleeve 33 , a guide tube 34 , and a thermocouple 35 .

[0040] The sliding sleeve 33 is slidably connected to the interior of the sleeve 31. The first spring 32 is disposed inside the sleeve 31. One end of the first spring 32 is fixedly connected to the sliding sleeve 33. The guide tube 34 is fixedly connected to one side of the sliding sleeve 33. The thermocouple 35 is fixedly connected to the interior of the sliding sleeve 33.

[0041] The angle adjustment assembly 60 includes a third threaded rod 61, a second slider 62, a second spring 63, a rotating plate 64 and a mounting plate 65;

[0042] The second slider 62 is rotatably connected to one end of the third threaded rod 61 . Four second springs 63 are symmetrically fixedly connected to one side of the mounting plate 65 . The rotating plate 64 is fixedly connected to one end of the second spring 63 .

[0043] In this embodiment, specifically: a forward and backward moving component 20 is provided on the rear surface of the base 10, a locking component 40 is provided on the top of the forward and backward moving component 20, an upper and lower adjustment component 50 is provided on the top of the locking component 40, a test piece 90 is provided at one end of the pre-tightening component 30, a high-temperature furnace 70 is provided on the outside of the test piece 90, and the test piece 90 is set as two test pieces of different lengths.

[0044] In this embodiment, specifically: the forward and backward moving assembly 20 includes a first mounting base 21, a second mounting base 22, two first guide rods 23, a first slider 24, a first threaded rod 25 and a hand wheel 26;

[0045] The first mounting seat 21 is fixedly connected to the rear surface of the base 10 by bolts, and the second mounting seat 22 is fixedly connected to the rear surface of the first mounting seat 21 .

[0046] In this embodiment, specifically: the second mounting seat 22 is symmetrically fixedly connected to one end of the two first guide rods 23 on one side close to the base 10, the first slider 24 is slidably connected to the outer wall of the first guide rod 23, the first threaded rod 25 is rotatably connected to the side of the second mounting seat 22 close to the base 10, the handwheel 26 is fixedly connected to the end of the first threaded rod 25 away from the base 10, and the first slider 24 is slidably connected to the outer wall of the first threaded rod 25. Through the above settings, rotating the handwheel 26 causes the first threaded rod 25 to rotate, driving the first slider 24 to move back and forth, thereby causing multiple components including the thermocouple 35 on the top of the first slider 24 to move back and forth.

[0047] In this embodiment, specifically: the locking assembly 40 includes a guide post 41, a third mounting seat 42, a locking knob 43 and a fixing block 44;

[0048] The third mounting seat 42 is fixedly connected to the top of the second mounting seat 22 , and the guide post 41 is slidably connected to the inside of the third mounting seat 42 .

[0049] In this embodiment, specifically: the fixing block 44 is fixedly connected to one end of the guide column 41, the locking knob 43 is threadedly connected to the front surface of the fixing block 44, and the pre-tightening assembly 30 is installed in the fixing block 44. At this time, the sleeve 31 can move back and forth, and manually tightening the locking knob 43 can ensure that the sleeve 31 does not move.

[0050] In this embodiment, specifically, the sleeve 31 is slidably connected to the interior of the fixing block 44 .

[0051] In this embodiment, specifically: the up and down adjustment assembly 50 includes a second threaded rod 51, a fourth mounting seat 52, a connecting plate 53 and a second guide rod 54;

[0052] Two second guide rods 54 are symmetrically fixedly connected to the top of the third mounting seat 42 , and the fourth mounting seat 52 is slidably connected to the outer side walls of the second guide rods 54 .

[0053] In this embodiment, specifically: the second threaded rod 51 is rotatably connected to the top of the fourth mounting seat 52, the connecting plate 53 is fixedly connected to the front surface of the fourth mounting seat 52, and a cotter pin is installed at the end of the second threaded rod 51 to facilitate manual rotation of the screw and fine-tune up and down. When adjusting, the second threaded rod 51 is rotated to drive the fourth mounting seat 52 to move up and down.

[0054] In this embodiment, specifically: the third threaded rod 61 is rotatably connected to the inside of the connecting plate 53, the second slider 62 is slidably connected to the rear surface of the connecting plate 53, the mounting plate 65 is fixedly connected to the rear surface of the connecting plate 53, the rotating plate 64 is fixedly connected to the outer wall of the guide column 41, the guide column 41 is rotatably connected to the inside of the connecting plate 53, and a cotter pin is installed at the end of the third threaded rod 61 to facilitate manual rotation of the third threaded rod 61 to drive the second slider 62 to move back and forth. The rotating plate 64 is tightened by the second spring 63 and always rests on the second slider 62. When the second slider 62 moves back and forth, it drives the rotating plate 64 to rotate, and the rotating plate 64 is connected to the guide column 41, thereby realizing the angle adjustment function.

[0055] The present invention is in operation: the base 10 mainly plays a supporting role, the mounting hole on the base 10 is designed as a strip hole, which can realize left and right fine adjustment, the front and rear moving assembly 20 can realize the adjustment of the front and rear distance of the device, and the adjustable distance is 70mm. It can be adjusted according to needs during the test. The main function of the pre-tightening assembly 30 is to provide a pre-tightening force that always pushes forward when the thermocouple 35 is on top of the test piece, ensuring that the thermocouple 35 is always in close contact with the surface of the test piece during the test. The main function of the locking assembly 40 is to maintain the pre-tightening force when the thermocouple 35 pushes the test piece forward. When the thermocouple 35 pushes forward, the first spring inside the pre-tightening assembly 30 The spring 32 contracts, and there is a rebound force causing the thermocouple 35 to retreat. At this time, it is fixed by the locking knob 43 of the locking assembly 40 to ensure that the first spring 32 is always in a compressed state, providing a preload force to the thermocouple 35. The main function of the upper and lower adjustment assembly 50 is to adjust the relative position of the thermocouple 35 and the test piece by fine-tuning the upper and lower parts when the position of the thermocouple 35 relative to the test piece cannot be guaranteed to be absolutely aligned during the installation of the test piece. The function of the angle adjustment assembly 60 is to adjust the angles of the upper and lower thermocouples 35 to meet the temperature measurement requirements of test pieces of different specifications, such as Figure 4 and Figure 5 As shown, since the test piece 90 is set as two test pieces of different lengths, the test can be completed by adjusting the angle of the thermocouple 35.

[0056] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various modifications and substitutions within the technical scope disclosed in the present invention, and such modifications and substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A high-temperature mechanical test direct-insertion temperature measuring device, comprising a base (10), characterized in that: A pre-tightening assembly (30) and an angle adjustment assembly (60) are provided above the base (10), wherein the pre-tightening assembly (30) comprises a sleeve (31), a first spring (32), a sliding sleeve (33), a guide tube (34) and a thermocouple (35); The sliding sleeve (33) is slidably connected to the interior of the sleeve (31), the first spring (32) is arranged inside the sleeve (31), one end of the first spring (32) is fixedly connected to the sliding sleeve (33), the guide tube (34) is fixedly connected to one side of the sliding sleeve (33), and the thermocouple (35) is fixedly connected to the interior of the sliding sleeve (33); The angle adjustment assembly (60) comprises a third threaded rod (61), a second slider (62), a second spring (63), a rotating plate (64) and a mounting plate (65); The second slider (62) is rotatably connected to one end of the third threaded rod (61), four second springs (63) are symmetrically fixedly connected to one side of the mounting plate (65), and the rotating plate (64) is fixedly connected to one end of the second spring (63); A front-to-back moving assembly (20) is provided on the rear surface of the base (10), a locking assembly (40) is provided on the top of the front-to-back moving assembly (20), an up-down adjustment assembly (50) is provided on the top of the locking assembly (40), a test piece (90) is provided at one end of the pre-tightening assembly (30), and a high-temperature furnace (70) is provided on the outside of the test piece (90); The locking assembly (40) includes a guide column (41), a third mounting seat (42), a locking knob (43) and a fixing block (44); The third mounting seat (42) is fixedly connected to the top of the second mounting seat (22), and the guide column (41) is slidably connected to the inside of the third mounting seat (42); The fixing block (44) is fixedly connected to one end of the guide column (41), and the locking knob (43) is threadedly connected to the front surface of the fixing block (44); The sleeve (31) is slidably connected to the interior of the fixing block (44); The guide tube (34) is a high-temperature Y-shaped positioning tube to prevent the thermocouple (35) from slipping when in point-to-point contact with the test piece (90).

2. A high-temperature mechanical test direct-insertion temperature measuring device according to claim 1, characterized in that: The forward and backward moving assembly (20) comprises a first mounting seat (21), a second mounting seat (22), two first guide rods (23), a first slider (24), a first threaded rod (25) and a hand wheel (26); The first mounting seat (21) is fixedly connected to the rear surface of the base (10) by means of bolts, and the second mounting seat (22) is fixedly connected to the rear surface of the first mounting seat (21).

3. A high-temperature mechanical test direct-insertion temperature measuring device according to claim 2, characterized in that: The second mounting seat (22) is symmetrically fixedly connected to one end of the two first guide rods (23) on one side close to the base (10), the first slider (24) is slidably connected to the outer side wall of the first guide rod (23), the first threaded rod (25) is rotatably connected to the side of the second mounting seat (22) close to the base (10), the hand wheel (26) is fixedly connected to one end of the first threaded rod (25) away from the base (10), and the first slider (24) is slidably connected to the outer side wall of the first threaded rod (25).

4. The high-temperature mechanical test direct-insertion temperature measuring device according to claim 1, characterized in that: The up and down adjustment assembly (50) comprises a second threaded rod (51), a fourth mounting seat (52), a connecting plate (53) and a second guide rod (54); Two second guide rods (54) are symmetrically fixedly connected to the top of the third mounting seat (42), and the fourth mounting seat (52) is slidably connected to the outer side wall of the second guide rod (54).

5. The high-temperature mechanical test direct-insertion temperature measuring device according to claim 4, characterized in that: The second threaded rod (51) is rotatably connected to the top of the fourth mounting seat (52), and the connecting plate (53) is fixedly connected to the front surface of the fourth mounting seat (52).

6. The high-temperature mechanical test direct insertion temperature measuring device according to claim 5, characterized in that: The third threaded rod (61) is rotatably connected to the inside of the connecting plate (53), the second slider (62) is slidably connected to the rear surface of the connecting plate (53), the mounting plate (65) is fixedly connected to the rear surface of the connecting plate (53), the rotating plate (64) is fixedly connected to the outer side wall of the guide column (41), and the guide column (41) is rotatably connected to the inside of the connecting plate (53).

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