Thermocouple with buffer structure

Abstract

The utility model discloses a thermocouple with a buffer structure, which comprises a junction box, a fixed sleeve and a threaded sleeve, a thermode is arranged at the bottom of the junction box, a protective tube is arranged outside the thermode and at the bottom of the junction box, the bottom end of the fixed sleeve is fixedly mounted with the threaded sleeve, and the threaded sleeve is fixedly mounted on the fixed sleeve. According to the utility model, the protection tube is arranged outside the thermode to protect the thermode, meanwhile, the fixing sleeve is arranged at the bottom end of the protection tube, the threaded sleeve is arranged at the bottom of the fixing sleeve, and the buffer shell is in threaded connection with the outside of the threaded sleeve, so that the thermode is protected, and the service life of the thermode is prolonged. And when the buffer shell rotates towards the upper part of the threaded sleeve, the spring connected with the buffer shell is shrunk towards the interior of the connecting rod, so that the top end of the electrifying rod is in contact connection with the electrifying groove in the bottom end of the thermode, the thermode is protected, and the thermode is prevented from being damaged due to accidental falling of the exposed thermode.

Description

Technical Field

[0001] The utility model relates to the technical field of thermocouples, in particular to a thermocouple with a buffer structure. Background Art

[0002] Thermocouples are commonly used temperature measuring elements in temperature measuring instruments. They are usually composed of main parts such as thermocouples, insulating sleeve protection tubes and junction boxes. They are usually used in conjunction with display instruments, recording instruments and electronic regulators.

[0003] After searching, the prior art has a publication number of CN204630674U, which discloses a thermocouple with a buffering function, including a junction box and an insulating sleeve, wherein the junction box is arranged at the top of the insulating sleeve, a thermoelectrode is arranged in the insulating sleeve, the insulating sleeve is divided into an upper insulating sleeve and a lower insulating sleeve, the upper insulating sleeve and the lower insulating sleeve are connected by a stud nut, the stud is a hollow structure, the thermoelectrode passes through the stud, a ball head is arranged at the bottom of the upper insulating sleeve, a ball socket is arranged at the top of the lower insulating sleeve, the ball head is arranged in the ball socket, the stud passes through the ball head and the ball socket, and a spring washer is arranged between the nut and the stud. The beneficial effects of the utility model are: the utility model has a novel design and a simple structure, and the arrangement of the ball head and the ball socket plays a role in buffering and shock absorbing the insulating sleeve, improving the overall firmness and being more durable.

[0004] Thermocouples are mainly used to measure the temperature of liquid substances. In practical applications, thermocouples mostly use an exposed thermometer and a threaded connection to measure temperature, and convert the temperature signal into a thermoelectric potential signal, which is displayed on the instrument panel for inspection personnel to observe. However, the hot electrode at the end of the thermocouple is exposed and may be damaged if it falls accidentally. Therefore, a thermocouple with a buffer structure is needed. Utility Model Content

[0005] The purpose of the utility model is to provide a thermocouple with a buffer structure, by arranging a protection tube on the outside of the thermoelectrode, and a buffer shell that can move up and down is arranged at the bottom of the protection tube to protect the thermoelectrode. When the thermocouple needs to be used, the buffer shell is rotated toward the top of the threaded sleeve. When the buffer shell and the threaded sleeve are tightly threaded, the top end of the power-on rod and the power-on groove at the bottom end of the thermoelectrode are in conflict with each other, so as to achieve connection and measure the temperature, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A thermocouple with a buffer structure comprises a junction box, a fixed sleeve and a threaded sleeve, wherein a thermode is arranged at the bottom of the junction box, a protective tube is arranged outside the thermode at the bottom of the junction box, the bottom end of the protective tube is fixedly mounted to the fixed sleeve, the bottom end of the fixed sleeve is fixedly mounted to the threaded sleeve, the side wall of the threaded sleeve is threadedly connected with a buffer shell that can drive an energizing rod to move, the top end of the buffer shell is symmetrically arranged on the outside of the threaded sleeve with connecting components connected to the buffer shell, a circular hole is opened at the bottom end of the buffer shell, the inner wall of the circular hole is fixedly mounted to the side wall of the energizing rod, and the top end of the energizing rod located inside the buffer shell conflicts with the thermode.

[0008] Preferably, a power-conducting groove is provided at the bottom end of the hot electrode, and the power-conducting groove and the top end of the power-conducting rod located inside the buffer shell are in conflict with each other.

[0009] Preferably, an inner wall of the buffer shell is provided with an internal thread, and the internal thread is threadably connected to the threaded sleeve.

[0010] Preferably, an outer side wall of the buffer shell is provided with an external thread, and the external thread is threadably connected to an external device.

[0011] Preferably, the connecting assembly includes a rotating block and a telescopic module, the bottom surface of the fixed sleeve is located outside the threaded sleeve and is provided with a rotating groove, the bottom surface of the rotating block is fixedly installed with the connecting rod, the side walls of the rotating block and the connecting rod are respectively slidably connected with the inner walls of the rotating groove, the bottom end of the connecting rod is provided with a notch, the top surface of the notch is provided with a groove, and the notch is slidably connected with the telescopic module.

[0012] Preferably, the groove is located inside the connecting rod and the rotating block and passes through the rotating block and the connecting rod.

[0013] Preferably, the telescopic module includes a spring and an inner rod, the top end of the spring is fixedly mounted to the top surface of the inner groove of the rotating block, the other end of the spring is fixedly mounted to the inner rod, the top side wall of the inner rod is slidably connected to the groove, the lower side wall of the inner rod is slidably connected to the notch, and the bottom end of the inner rod is fixedly mounted to the buffer shell.

[0014] Preferably, the inner diameter of the notch is smaller than the inner diameter of the groove inside the connecting rod, the diameter of the top end of the inner rod is the same as the inner diameter of the groove, and the diameter of the side wall below the inner rod is the same as the notch.

[0015] Preferably, a wiring port for connecting to external equipment is also provided on one side of the junction box.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model provides a protection tube on the outside of the thermoelectrode to protect the thermoelectrode, and at the same time provides a fixing sleeve at the bottom end of the protection tube, and a threaded sleeve is provided at the bottom of the fixing sleeve, and the external thread of the threaded sleeve is connected with a buffer shell, and when the buffer shell rotates above the threaded sleeve, the spring connected to the buffer shell shrinks toward the inside of the connecting rod, so that the top end of the power-carrying rod and the power-carrying groove at the bottom end of the thermoelectrode are mutually contacted and connected, thereby protecting the thermoelectrode and preventing the thermoelectrode from being exposed and accidentally falling and causing damage to the thermoelectrode. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall external structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the overall cutaway structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of the buffer shell of the utility model;

[0021] Figure 4 This is a schematic diagram of the spring position structure of the utility model;

[0022] Figure 5 This is a schematic diagram of the power supply slot structure of the utility model.

[0023] In the figure: 1. junction box; 2. protective tube; 3. fixing sleeve; 4. wiring port; 5. rotating groove; 6. threaded sleeve; 7. connecting rod; 8. groove; 9. notch; 10. inner rod; 11. spring; 12. buffer shell; 13. external thread; 14. internal thread; 15. power rod; 16. round hole; 17. rotating block; 18. hot electrode; 19. power groove. DETAILED DESCRIPTION

[0024] 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.

[0025] See also Figures 1 to 5 , the utility model provides a technical solution:

[0026] A thermocouple with a buffer structure comprises a junction box 1, a fixed sleeve 3 and a threaded sleeve 6, a thermocouple 18 is arranged at the bottom of the junction box 1, a protective tube 2 is arranged outside the thermocouple 18 and located at the bottom of the junction box 1, the bottom end of the protective tube 2 is fixedly installed with the fixed sleeve 3, the bottom end of the fixed sleeve 3 is fixedly installed with the threaded sleeve 6, the side wall of the threaded sleeve 6 is threadedly connected with a buffer shell 12 which can drive an energizing rod 15 to move, the top end of the buffer shell 12 is located outside the threaded sleeve 6 and symmetrically provided with connecting components connecting the buffer shell 12, a circular hole 16 is provided at the bottom end of the buffer shell 12, the inner wall of the circular hole 16 is fixedly installed with the side wall of the energizing rod 15, the top end of the energizing rod 15 located inside the buffer shell 12 conflicts with the thermocouple 18, a energizing groove 19 is provided at the bottom end of the thermocouple 18, the energizing groove 19 conflicts with the top end of the energizing rod 15 located inside the buffer shell 12.

[0027] A fixing sleeve 3 is arranged to be installed at the bottom end of the protection tube 2 outside the thermoelectrode 18, and a threaded sleeve 6 is also arranged at the bottom end of the fixing sleeve 3, the threaded sleeve 6 is threadedly connected to the buffer shell 12, and a connecting assembly is also arranged on the outside of the threaded sleeve 6 on the bottom surface of the fixing sleeve 3 and fixedly installed with the buffer shell 12, so that the buffer shell 12 and the fixing sleeve 3 can be connected through the connecting assembly to protect the thermoelectrode 18 inside the protection tube 2 and prevent the thermoelectrode 18 from being hit. At the same time, when the buffer shell 12 rotates to the top of the threaded sleeve 6, the top end of the power-on rod 15 is connected to the power-on slot 19 at the bottom end of the thermoelectrode 18 in contact with each other, so as to measure the liquid and convert the temperature signal into a thermoelectromotive force signal for observation by the observer through the instrument panel.

[0028] The inner wall of the buffer shell 12 is provided with an internal thread 14, and the internal thread 14 is threadedly connected to the threaded sleeve 6. By providing the internal thread 14 on the inner wall of the buffer shell 12, the buffer shell 12 and the threaded sleeve 6 are threadedly connected, which further drives the power rod 15 to be connected to the hot electrode 18.

[0029] The outer wall of the buffer shell 12 is provided with an external thread 13, and the external thread 13 is threadedly connected to an external device. By providing the external thread 13 on the outer wall of the buffer shell 12, the buffer shell 12 is conveniently connected to an external device, so that the internal thermode 18 can measure the temperature.

[0030] The connecting assembly includes a rotating block 17 and a telescopic module. The bottom surface of the fixed sleeve 3 is located outside the threaded sleeve 6 and is provided with a rotating groove 5. The bottom surface of the rotating block 17 is fixedly installed with the connecting rod 7. The side walls of the rotating block 17 and the connecting rod 7 are respectively slidably connected with the inner walls of the rotating groove 5. A notch 9 is provided at the bottom end of the connecting rod 7, and a groove 8 is provided on the top surface of the notch 9. The notch 9 is slidably connected with the telescopic module.

[0031] The groove 8 is located inside the connecting rod 7 and the rotating block 17 and passes through the rotating block 17 and the connecting rod 7 .

[0032] The rotating block 17 is provided to be slidably connected with the rotating groove 5 opened on the bottom surface of the fixed sleeve 3, and the bottom end of the rotating block 17 is fixedly installed with the connecting rod 7, a notch 9 is opened on the bottom surface of the connecting rod 7, a groove 8 is opened on the top surface of the notch 9, and the groove 8 is located inside the connecting rod 7 and the rotating block 17 so that the connecting rod 7 and the rotating block 17 are interconnected, so that the telescopic module can accommodate the inner rod 10 when the buffer shell 12 rotates toward the top of the threaded sleeve 6.

[0033] The telescopic module includes a spring 11 and an inner rod 10. The top end of the spring 11 is fixedly installed on the top surface of the inner groove 8 of the rotating block 17, and the other end of the spring 11 is fixedly installed on the inner rod 10. The top side wall of the inner rod 10 is slidably connected to the groove 8, and the lower side wall of the inner rod 10 is slidably connected to the notch 9. The bottom end of the inner rod 10 is fixedly installed on the buffer shell 12. The inner diameter of the notch 9 is smaller than the inner diameter of the inner groove 8 of the connecting rod 7. The diameter of the top end of the inner rod 10 is the same as the inner diameter of the groove 8, and the diameter of the lower side wall of the inner rod 10 is the same as the notch 9.

[0034] A spring 11 is installed on the top surface of the internal groove 8 of the rotating block 17, and the other end of the spring 11 is fixedly installed on the inner rod 10. The top end of the inner rod 10 slides inside the groove 8, and the side wall of the inner rod 10 is slidably connected to the notch 9. At the same time, the diameter of the notch 9 is set to be smaller than the inner diameter of the groove 8, and the top diameter of the inner rod 10 is the same as the inner diameter of the groove 8, so as to prevent the inner rod 10 from falling out of the groove 8 and affecting the connection between the buffer shell 12 and the fixed sleeve 3.

[0035] A wiring port 4 for connecting to external equipment is also provided on one side of the junction box 1 .

[0036] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A thermocouple with a buffer structure, characterized in that: It comprises a junction box (1), a fixing sleeve (3) and a threaded sleeve (6), wherein; A thermode (18) is provided at the bottom of the junction box (1); a protective tube (2) is provided outside the thermode (18) and located at the bottom of the junction box (1); the bottom end of the protective tube (2) is fixedly mounted on a fixing sleeve (3); and the bottom end of the fixing sleeve (3) is fixedly mounted on a threaded sleeve (6); The side wall of the threaded sleeve (6) is threadedly connected to a buffer shell (12) capable of driving the energizing rod (15) to move, and the top end of the buffer shell (12) is located outside the threaded sleeve (6) and a connecting component connected to the buffer shell (12) is symmetrically arranged; A circular hole (16) is provided at the bottom end of the buffer shell (12), and the inner wall of the circular hole (16) is fixedly mounted to the side wall of the power rod (15). The top end of the power rod (15) located inside the buffer shell (12) contacts the hot electrode (18).

2. A thermocouple with a buffer structure according to claim 1, characterized in that: A current-carrying groove (19) is provided at the bottom end of the hot electrode (18), and the current-carrying groove (19) and the top end of the current-carrying rod (15) located inside the buffer shell (12) are in conflict with each other.

3. A thermocouple with a buffer structure according to claim 2, characterized in that: The inner wall of the buffer shell (12) is provided with an internal thread (14), and the internal thread (14) is threadedly connected to the threaded sleeve (6).

4. A thermocouple with a buffer structure according to claim 3, characterized in that: The outer wall of the buffer shell (12) is provided with an external thread (13), and the external thread (13) is threadably connected to an external device.

5. A thermocouple with a buffer structure according to claim 4, characterized in that: The connecting assembly comprises a rotating block (17) and a telescopic module. The bottom surface of the fixed sleeve (3) is located outside the threaded sleeve (6) and is provided with a rotating groove (5). The bottom surface of the rotating block (17) is fixedly mounted on the connecting rod (7). The side walls of the rotating block (17) and the connecting rod (7) are respectively slidably connected to the inner wall of the rotating groove (5). The bottom end of the connecting rod (7) is provided with a notch (9). The top surface of the notch (9) is provided with a groove (8). The notch (9) is slidably connected to the telescopic module.

6. A thermocouple with a buffer structure according to claim 5, characterized in that: The groove (8) is located inside the connecting rod (7) and the rotating block (17) and penetrates the rotating block (17) and the connecting rod (7).

7. A thermocouple with a buffer structure according to claim 6, characterized in that: The telescopic module comprises a spring (11) and an inner rod (10); the top end of the spring (11) is fixedly mounted on the top surface of the inner groove (8) of the rotating block (17); the other end of the spring (11) is fixedly mounted on the inner rod (10); the top side wall of the inner rod (10) is slidably connected to the groove (8); the lower side wall of the inner rod (10) is slidably connected to the notch (9); and the bottom end of the inner rod (10) is fixedly mounted on the buffer shell (12).

8. The thermocouple with a buffer structure according to claim 7, characterized in that: The inner diameter of the notch (9) is smaller than the inner diameter of the groove (8) inside the connecting rod (7), the diameter of the top end of the inner rod (10) is the same as the inner diameter of the groove (8), and the diameter of the side wall below the inner rod (10) is the same as the notch (9).

9. The thermocouple with a buffer structure according to claim 1, characterized in that: One side of the junction box (1) is also provided with a connection port (4) for connecting to external equipment.

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