Detection device for thermocouple production

Abstract

The utility model discloses a detection device for thermocouple production, which belongs to the technical field of thermocouple detection and comprises a thermocouple verification furnace, and a detection hole is arranged on one side of the thermocouple verification furnace. According to the utility model, through the arrangement of the thermocouple verification furnace, a thermocouple can be detected in the production process, and during detection, a user can clamp and fix the sealing block on one side of the thermocouple verification furnace through the clamping assembly to seal the detection hole on the surface of the thermocouple verification furnace; through the arrangement of the device, multiple groups of thermocouples can be detected at the same time at a time, the sealing performance among the multiple groups of thermocouples is ensured, gaps among the multiple groups of thermocouples are prevented, and through the cooperative use of the auxiliary supporting assembly and the telescopic connecting assembly, the detection efficiency is improved. The part, located outside the thermocouple verification furnace, of the thermocouple can be supported in an auxiliary mode, so that the stability of thermocouple detection is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of thermocouple detection, in particular to a detection device for thermocouple production. Background Art

[0002] Thermocouples are commonly used temperature measuring elements in temperature measuring instruments. They directly measure temperature and convert temperature signals into thermoelectric potential signals, which are then converted into the temperature of the medium being measured through electrical instruments (secondary instruments). The appearance of various thermocouples is often very different due to needs, but their basic structure is roughly the same. They are usually composed of main parts such as hot electrodes, insulating sleeve protection tubes and junction boxes. In addition, thermocouples are generally connected to the object being measured through flanges set on them. Thermocouples need to be calibrated regularly after factory inspection or after being used for a period of time to ensure the accuracy of the measurement.

[0003] A Chinese patent with the publication (announcement) number CN217687600U discloses a thermocouple calibration fixture. It includes a detection furnace body and a fixing assembly. The fixing assembly is arranged on the side of the detection furnace body with a detection hole, and an array is evenly arranged around the detection hole. The fixing assembly includes a fixing block, a limit block, a guide column and a spring. The fixing block is arranged on the side of the detection furnace body, and the limit block and the fixed block are connected by a guide column. The spring is sleeved on the guide column, and its two ends are respectively abutted against the limit block and the fixed block. The limit block can be compressed along the axis of the guide column toward the direction of the fixed block. It compresses the spring through the limit block, and the spring will provide a reaction force to the limit block, so that the limit block presses the thermocouple in the detection hole, so that there is no gap between the thermocouples; when the thermocouple is heated, the position will not move, thereby improving the accuracy of the detection.

[0004] The thermocouple calibration fixture involved in the above patent still has some obvious shortcomings in actual use. In the device, the thermocouple in the detection hole is pressed by a limit block, but the thermocouple is cylindrical. Even if it is squeezed together, there will still be some gaps between adjacent thermocouples, resulting in poor sealing of the detection hole. Therefore, we need to propose a detection device for thermocouple production. Utility Model Content

[0005] The purpose of the utility model is to provide a detection device for thermocouple production, which has the advantage of being able to detect multiple groups of thermocouples at one time so that there will be no gaps between the groups of thermocouples to ensure the sealing of the detection holes, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides a detection device for thermocouple production, including a thermocouple calibration furnace, a detection hole is opened on one side of the thermocouple calibration furnace, a sealing block is inserted into the inner cavity of the detection hole, a plug hole compatible with the thermocouple is opened on the surface of the sealing block, a fixing plate is fixedly installed on the surface of the sealing block and located outside the thermocouple calibration furnace, a clamping assembly is arranged between the fixing plate and the thermocouple calibration furnace, the sealing block is fixed to the inner cavity of the detection hole through the clamping assembly, the thermocouple calibration furnace is located on one side of the detection hole and is also provided with an auxiliary support assembly for auxiliary support of the thermocouple, a retractable connection assembly is arranged between the auxiliary support assembly and the thermocouple calibration furnace, and the auxiliary support assembly is movably installed on one side of the thermocouple calibration furnace through the retractable connection assembly.

[0007] Preferably, the clamping assembly includes positioning blocks fixedly installed on both sides of a fixed plate, a positioning plate fixedly installed on one side of the thermocouple calibration furnace and located outside the two groups of positioning blocks, a spring plunger is embedded in the surface of the positioning block, and a clamping hole is opened on the surface of the positioning plate at a position corresponding to the spring plunger, and the clamping end of the spring plunger is clamped with the inner wall of the clamping hole.

[0008] Preferably, an oblique guide groove connected to the clamping hole is provided on one side of the positioning plate, and the clamping end of the spring plunger is slidably connected to the inner wall of the oblique guide groove.

[0009] Preferably, the auxiliary support assembly includes a support plate arranged on one side of the thermocouple calibration furnace, a support seat is fixedly installed on the top of the support plate, a positioning seat is arranged on the top of the support seat, the positioning seat is locked and fixed to the top of the support seat by a locking assembly, a support block adapted to the sealing block is fixed between the support seat and the positioning seat by a limiting assembly, and a support hole corresponding to the jack is opened on the surface of the support block.

[0010] Preferably, the locking assembly includes locking rods arranged on both sides of the top of the positioning seat, and a locking hole is opened at the top of the support seat and at the corresponding position of the locking rod. The bottom end of the locking rod passes through the positioning seat and extends to the bottom of the positioning seat and is threadedly connected to the inner wall of the locking hole.

[0011] Preferably, a countersunk hole is provided at the top of the positioning seat and at a position corresponding to the locking rod, and the top end of the locking rod is hidden in the inner cavity of the countersunk hole.

[0012] Preferably, the limiting assembly includes a limiting ring fixedly mounted on the surface of the support block, the top of the support seat and the bottom of the positioning seat are both provided with limiting grooves adapted to the limiting ring, and the surface of the limiting ring is clamped with the inner wall of the limiting groove.

[0013] Preferably, the retractable connection assembly includes slide rails fixedly mounted on both sides of the bottom of the thermocouple calibration furnace, the inner cavity of the slide rails being slidably connected with a slide rod, one end of the slide rod passing through the slide rails and extending to the outside of the slide rails and fixedly connected to the surface of the support plate, and a positioning assembly for positioning the use position of the slide rod is also installed at the bottom of the slide rails.

[0014] Preferably, the positioning assembly includes a positioning tube fixedly mounted on the bottom of the slide rail, the bottom of the positioning tube is threadedly connected with a positioning rod, one end of the positioning rod passes through the positioning tube and the slide rail in sequence and extends to the inner cavity of the slide rail to fit with the surface of the slide rod.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model can detect thermocouples during the production process by setting up a thermocouple calibration furnace. During the detection, the user can clamp and fix the sealing block to one side of the thermocouple calibration furnace through the clamping assembly to seal the detection hole on the surface of the thermocouple. The thermocouple can be inserted into the jack on the surface of the sealing block and then inserted into the interior of the thermocouple calibration furnace. Through the setting of this device, multiple groups of thermocouples can be detected at one time, and the sealing between several groups of thermocouples can be guaranteed to prevent gaps therebetween. Through the coordinated use of the auxiliary support assembly and the retractable connection assembly, the part of the thermocouple located outside the thermocouple calibration furnace can be auxiliary supported to improve the stability of the thermocouple detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the positioning component of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the clamping assembly of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the auxiliary support assembly of the utility model.

[0021] In the figure: 1. Thermocouple calibration furnace; 2. Detection hole; 3. Sealing block; 4. Socket; 5. Fixing plate; 6. Positioning block; 7. Positioning plate; 8. Spring plunger; 9. Clamping hole; 10. Oblique guide groove; 11. Support plate; 12. Support seat; 13. Positioning seat; 14. Support block; 15. Support hole; 16. Locking rod; 17. Locking hole; 18. Countersunk hole; 19. Limiting ring; 20. Limiting groove; 21. Slide rail; 22. Slide rod; 23. Positioning tube; 24. Positioning rod. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-Figure 4 The utility model provides a detection device for thermocouple production, including a thermocouple calibration furnace 1, a detection hole 2 is opened on one side of the thermocouple calibration furnace 1, a sealing block 3 is inserted into the inner cavity of the detection hole 2, and a plug hole 4 compatible with the thermocouple is opened on the surface of the sealing block 3.

[0024] In this embodiment, the thermocouple is tested during the production process by the thermocouple testing furnace 1. The thermocouple testing furnace 1 is an existing mature product, and its specific working principle is not described here. By setting the sealing block 3, the detection hole 2 on one side of the thermocouple testing furnace 1 can be sealed. During the testing process, one end of the thermocouple will be inserted into the interior of the thermocouple testing furnace 1 through the jack 4. By setting the sealing block 3, a gap can be prevented from existing between the thermocouple and the detection hole 2, and a gap can be prevented from existing between several groups of thermocouples.

[0025] Preferably, a fixing plate 5 is fixedly installed on the surface of the sealing block 3 and located outside the thermocouple calibration furnace 1, a clamping assembly is arranged between the fixing plate 5 and the thermocouple calibration furnace 1, the sealing block 3 is fixed to the inner cavity of the detection hole 2 through the clamping assembly, the clamping assembly includes positioning blocks 6 fixedly installed on both sides of the fixing plate 5, a positioning plate 7 is fixedly installed on one side of the thermocouple calibration furnace 1 and located outside the two groups of positioning blocks 6, a spring plunger 8 is embedded on the surface of the positioning block 6, a clamping hole 9 is provided on the surface of the positioning plate 7 and located at the corresponding position of the spring plunger 8, the clamping end of the spring plunger 8 is clamped with the inner wall of the clamping hole 9, an inclined guide groove 10 connected with the clamping hole 9 is provided on one side of the positioning plate 7, and the clamping end of the spring plunger 8 is slidably connected with the inner wall of the inclined guide groove 10.

[0026] By setting the snap-fit ​​assembly, the sealing block 3 can be snap-fitted and fixed in the inner cavity of the detection hole 2. When installing the sealing block 3, the user can insert the sealing block 3 into the inner cavity of the detection hole 2. When the sealing block 3 moves, the positioning blocks 6 on both sides of the fixed plate 5 will be driven to move. The movement of the positioning blocks 6 will drive the spring plunger 8 to move. The snap-fitting end of the spring plunger 8 will slide in the inner cavity of the inclined guide groove 10. When the sealing block 3 is fully inserted into the inner cavity of the detection hole 2, the spring plunger 8 will move to the corresponding position of the snap-fitting hole 9. At this time, its snap-fitting end will pop out and snap-fit ​​into the inner cavity of the snap-fitting hole 9, thereby snap-fitting and fixing the installation position of the sealing block 3.

[0027] Among them, the thermocouple calibration furnace 1 is also provided with an auxiliary support assembly for auxiliary support of the thermocouple on one side of the detection hole 2, and the auxiliary support assembly includes a support plate 11 arranged on one side of the thermocouple calibration furnace 1, and a support seat 12 is fixedly installed on the top of the support plate 11, and a positioning seat 13 is arranged on the top of the support seat 12. The positioning seat 13 is locked and fixed to the top of the support seat 12 through a locking assembly. The locking assembly includes locking rods 16 arranged on both sides of the top of the positioning seat 13, and a locking hole 17 is opened at the top of the support seat 12 and at the corresponding position of the locking rod 16. The bottom end of the locking rod 16 passes through the positioning seat 13 and extends to the bottom of the positioning seat 13. The square is threadedly connected to the inner wall of the locking hole 17, a countersunk hole 18 is provided at the top of the positioning seat 13 and at the corresponding position of the locking rod 16, and the top of the locking rod 16 is hidden in the inner cavity of the countersunk hole 18. A support block 14 compatible with the sealing block 3 is fixed between the support seat 12 and the positioning seat 13 through a limiting component. The limiting component includes a limiting ring 19 fixedly mounted on the surface of the support block 14, and a limiting groove 20 compatible with the limiting ring 19 is provided on the top of the support seat 12 and the bottom of the positioning seat 13. The surface of the limiting ring 19 is clamped with the inner wall of the limiting groove 20, and a support hole 15 corresponding to the jack 4 is provided on the surface of the support block 14.

[0028] Through the setting of the auxiliary support component, when installing the thermocouple to be tested, one end of it will be inserted into the inner cavity of the thermocouple calibration furnace 1, and the other end will be inserted into the inner cavity of the support hole 15 to provide auxiliary support for the thermocouple to improve the stability of its detection. When installing the support block 14, the user can insert the limiting ring 19 on the surface of the support block 14 into the inner cavity of the limiting groove 20, and then tighten the locking rod 16 to lock the positioning seat 13 and the support seat 12 together to fix the position of the support block 14. Through the setting of the countersunk hole 18, the flatness of the surface of the positioning seat 13 can be improved.

[0029] It is worth mentioning that a retractable connection assembly is arranged between the auxiliary support assembly and the thermocouple calibration furnace 1, and the auxiliary support assembly is movably installed on one side of the thermocouple calibration furnace 1 through the retractable connection assembly, and the retractable connection assembly includes a slide rail 21 fixedly installed on both sides of the bottom of the thermocouple calibration furnace 1, and the inner cavity of the slide rail 21 is slidably connected with a slide rod 22, one end of the slide rod 22 penetrates the slide rail 21 and extends to the outside of the slide rail 21 and is fixedly connected to the surface of the support plate 11, and a positioning assembly for positioning the use position of the slide rod 22 is also installed at the bottom of the slide rail 21, and the positioning assembly includes a positioning tube 23 fixedly installed at the bottom of the slide rail 21, and the bottom of the positioning tube 23 is threadedly connected with a positioning rod 24, and one end of the positioning rod 24 penetrates the positioning tube 23 and the slide rail 21 in turn and extends to the inner cavity of the slide rail 21 and fits with the surface of the slide rod 22.

[0030] By setting up the retractable connection assembly, the auxiliary support assembly can be movably installed on the thermocouple calibration furnace 1. When in use, the user can pull the support plate 11 outward, and the movement of the support plate 11 will drive the slide rod 22 to slide in the inner cavity of the slide rail 21. After adjusting the use position of the auxiliary support assembly, the user can tighten the positioning rod 24 to lock and fix the use position of the auxiliary support assembly.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A thermocouple production detection device, comprising a thermocouple calibration furnace (1), characterized in that: A detection hole (2) is provided on one side of the thermocouple calibration furnace (1), a sealing block (3) is inserted into the inner cavity of the detection hole (2), a plug hole (4) adapted to the thermocouple is provided on the surface of the sealing block (3), a fixing plate (5) is fixedly installed on the surface of the sealing block (3) and located outside the thermocouple calibration furnace (1), a snap-fit ​​assembly is provided between the fixing plate (5) and the thermocouple calibration furnace (1), the sealing block (3) is fixed to the inner cavity of the detection hole (2) via the snap-fit ​​assembly, the thermocouple calibration furnace (1) is also provided with an auxiliary support assembly for auxiliary support of the thermocouple on one side of the detection hole (2), a retractable connection assembly is provided between the auxiliary support assembly and the thermocouple calibration furnace (1), and the auxiliary support assembly is movably installed on one side of the thermocouple calibration furnace (1) via the retractable connection assembly.

2. A thermocouple production detection device according to claim 1, characterized in that: The clamping assembly comprises positioning blocks (6) fixedly mounted on both sides of a fixing plate (5); a positioning plate (7) fixedly mounted on one side of the thermocouple calibration furnace (1) and located outside the two groups of positioning blocks (6); a spring plunger (8) is embedded on the surface of the positioning block (6); a clamping hole (9) is provided on the surface of the positioning plate (7) at a position corresponding to the spring plunger (8); and a clamping end of the spring plunger (8) is clamped with an inner wall of the clamping hole (9).

3. A thermocouple production detection device according to claim 2, characterized in that: An oblique guide groove (10) communicating with the clamping hole (9) is provided on one side of the positioning plate (7), and the clamping end of the spring plunger (8) is slidably connected to the inner wall of the oblique guide groove (10).

4. A thermocouple production detection device according to claim 1, characterized in that: The auxiliary support assembly comprises a support plate (11) arranged on one side of the thermocouple calibration furnace (1); a support seat (12) is fixedly mounted on the top of the support plate (11); a positioning seat (13) is arranged on the top of the support seat (12); the positioning seat (13) is locked and fixed to the top of the support seat (12) by a locking assembly; a support block (14) adapted to the sealing block (3) is fixed between the support seat (12) and the positioning seat (13) by a limiting assembly; a support hole (15) corresponding to the insertion hole (4) is provided on the surface of the support block (14).

5. A thermocouple production detection device according to claim 4, characterized in that: The locking assembly comprises locking rods (16) arranged on both sides of the top of the positioning seat (13); a locking hole (17) is provided at the top of the support seat (12) and at a position corresponding to the locking rod (16); the bottom end of the locking rod (16) passes through the positioning seat (13) and extends to the bottom of the positioning seat (13) and is threadedly connected to the inner wall of the locking hole (17).

6. A thermocouple production detection device according to claim 5, characterized in that: A countersunk hole (18) is provided at the top of the positioning seat (13) and at a position corresponding to the locking rod (16), and the top end of the locking rod (16) is hidden in the inner cavity of the countersunk hole (18).

7. A thermocouple production detection device according to claim 4, characterized in that: The limiting assembly comprises a limiting ring (19) fixedly mounted on the surface of the support block (14); the top of the support seat (12) and the bottom of the positioning seat (13) are both provided with a limiting groove (20) adapted to the limiting ring (19); the surface of the limiting ring (19) is snap-fitted to the inner wall of the limiting groove (20).

8. A thermocouple production detection device according to claim 4, characterized in that: The retractable connection assembly comprises slide rails (21) fixedly mounted on both sides of the bottom of the thermocouple calibration furnace (1); the inner cavity of the slide rails (21) is slidably connected to a slide rod (22); one end of the slide rod (22) passes through the slide rail (21) and extends to the outside of the slide rail (21) to be fixedly connected to the surface of the support plate (11); and a positioning assembly for positioning the use position of the slide rod (22) is also installed at the bottom of the slide rail (21).

9. A thermocouple production detection device according to claim 8, characterized in that: The positioning assembly comprises a positioning tube (23) fixedly mounted on the bottom of the slide rail (21); the bottom of the positioning tube (23) is threadedly connected with a positioning rod (24); one end of the positioning rod (24) passes through the positioning tube (23) and the slide rail (21) in sequence and extends to the inner cavity of the slide rail (21) to fit with the surface of the slide rod (22).

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