Composite explosion-proof thermocouple

Abstract

The utility model discloses a composite explosion-proof thermocouple, comprising a main body structure; the main body structure comprises a shell and a thermocouple body installed in the shell, and a junction box is installed at the upper end of the shell; the heat dissipation mechanism is arranged outside the thermocouple body; the heat dissipation mechanism comprises a heat conduction pipe and heat dissipation fins integrally formed on the outer wall of the heat conduction pipe, the heat conduction pipe is located in the shell and sleeves the thermocouple body, the multiple sets of heat dissipation fins are distributed on the outer wall of the large heat pipe at equal intervals in a surrounding mode, and the heat dissipation fins are connected to the shell in a sealed and inserted mode; the end portions of the cooling fins extend to the outside of the shell, and ventilation structures are arranged on the cooling fins. The device can form cooling protection for the thermocouple by arranging the heat dissipation structure, thereby prolonging the service life of the thermocouple, reducing the maintenance cost and replacement frequency, improving the economic benefit, reducing the influence on a sensitive element, and improving the measurement precision and stability of the thermocouple.

Description

Technical Field

[0001] The utility model relates to the technical field of thermocouple equipment, in particular to a composite explosion-proof thermocouple. Background Art

[0002] The working principle of the thermocouple is that the two ends of the conductors of two different components are welded to form a loop. The end that directly measures the temperature is called the measuring end, and the terminal end is called the reference end. When there is a temperature difference between the measuring end and the reference end, a thermal current will be generated in the loop. When connected to a display instrument, the corresponding temperature value of the thermoelectric potential generated by the thermocouple will be indicated on the instrument. The thermoelectric potential of the thermocouple will increase as the temperature of the measuring end increases. The size of the thermoelectric potential is only related to the material of the thermocouple conductor and the temperature difference between the two ends, and has nothing to do with the length and diameter of the thermoelectrode.

[0003] In the prior art, after searching, the Chinese patent application number is: CN201710259620.0 discloses a thermocouple structure, including a terminal block, a terminal box is provided on the top of the terminal block, a protective sleeve is provided on the bottom, a heat-conducting seat is provided in the lower part of the protective sleeve, and the left and right sides of the heat-conducting seat are slidably assembled in the slide groove of the side wall of the protective sleeve. A pair of thermocouple wires are also vertically provided in the protective sleeve, and the lower ends of the two thermocouple wires extend into the heat-conducting seat and are connected as a whole in the heat-conducting seat to form a measuring end. The center of the terminal block slides A sliding column is slidably installed in the through hole, and a wiring terminal is provided on the top of the sliding column. The upper ends of the two thermocouple wires are inserted into the sliding column and connected to the wiring terminal. The thermal conductive seat is connected to the sliding column as a whole through a connecting rod. A threaded hole is provided on the right side of the thermal conductive seat, and a screw rod is assembled in the threaded hole. The lower end of the screw rod is rotatably installed on the wall of the pipe mouth at the lower end of the protective sleeve. The upper end of the screw rod is inserted into the junction box and fixedly installed with gear one. Gear two on the junction seat is meshed with gear one. A knob is also rotatably installed on the top of the junction box and is coaxially connected with gear two as a whole.

[0004] The above technical solution still has defects. In actual use, the detection end of the thermocouple is often inserted into a high-temperature environment. The sensitive elements of the thermocouple are easily affected by thermal shock and mechanical stress, resulting in reduced measurement accuracy or even damage. Therefore, we need to propose a composite explosion-proof thermocouple. Utility Model Content

[0005] The purpose of the utility model is to provide a composite explosion-proof thermocouple. The device has a simple structure and is easy to use. By arranging a heat dissipation structure, it can provide cooling protection for the thermocouple, thereby extending the service life of the thermocouple, reducing maintenance costs and replacement frequency, and improving economic benefits. At the same time, it reduces the impact on sensitive components and improves the measurement accuracy and stability of the thermocouple 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 composite explosion-proof thermocouple, comprising:

[0008] Main structure;

[0009] The main structure comprises a shell and a thermocouple body installed inside the shell, and a junction box is installed at the upper end of the shell;

[0010] A heat dissipation mechanism disposed outside the thermocouple body;

[0011] Among them, the heat dissipation mechanism includes a heat pipe and a heat sink integrally formed on the outer wall of the heat pipe, the heat pipe is located inside the shell and is sleeved on the outside of the thermocouple body, the heat sink is evenly distributed in multiple groups around the outer wall of the large heat pipe, the heat sink is sealed and plugged into the shell, and the end of the heat sink extends to the outside of the shell, and a ventilation structure is provided on the heat sink.

[0012] Preferably, the ventilation structure includes ventilation holes and heat dissipation gaps arranged on the heat sink, and the ventilation holes and heat dissipation gaps are distributed in an array in multiple groups on the heat sink.

[0013] Preferably, it also includes an auxiliary mechanism arranged outside the shell to improve the heat dissipation capacity of the equipment, and the auxiliary mechanism includes a jacket.

[0014] Preferably, an air inlet connected to the interior of the jacket is provided on a side wall of the lower end of the jacket, and an air outlet connected to the interior of the jacket is provided on an outer wall of one side of the upper end of the jacket.

[0015] Preferably, a fixing frame is provided inside the air outlet, and a fan is installed on the fixing frame.

[0016] Preferably, a threaded sleeve is installed on the internal thread of the air inlet, and a dustproof net is arranged inside the threaded sleeve.

[0017] Preferably, a knob is integrally formed at the end of the threaded sleeve, and an inner wall of the air inlet is provided with an internal thread section that matches the threaded sleeve.

[0018] Preferably, a flange is provided on the shell, and a fixing hole is opened on the flange.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] The utility model is provided with a main body structure including a shell and a thermocouple body, a heat dissipation mechanism including a heat conducting pipe and a heat sink is provided in the shell, the heat conducting pipe is sleeved on the outside of the thermocouple body, and the heat sink with a ventilation structure on the heat conducting pipe extends to the outside of the shell. The device has a simple structure and is easy to use. By providing the heat dissipation structure, cooling protection can be formed for the thermocouple, thereby extending the service life of the thermocouple, reducing maintenance costs and replacement frequency, and improving economic benefits. At the same time, the influence on sensitive elements is reduced, and the measurement accuracy and stability of the thermocouple are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 It is a structural schematic diagram of the housing of the utility model;

[0023] Figure 3 It is a structural schematic diagram of the detection end of the utility model;

[0024] Figure 4 It is a structural schematic diagram of the heat dissipation mechanism of the utility model;

[0025] Figure 5 It is a structural schematic diagram of the ventilation structure of the utility model;

[0026] Figure 6 It is a structural schematic diagram of the auxiliary mechanism of the utility model.

[0027] In the figure: 1. Shell; 2. Thermocouple body; 3. Detection end; 4. Terminal; 5. Junction box; 6. Wiring tube; 7. Box cover; 8. Heat pipe; 9. Heat sink; 10. Ventilation hole; 11. Heat dissipation gap; 12. Jacket; 13. Air inlet; 14. Air outlet; 15. Fixing bracket; 16. Fan; 17. Threaded sleeve; 18. Internal thread section; 19. Dust net. DETAILED DESCRIPTION

[0028] 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.

[0029] See also Figure 1-5 , the utility model provides a technical solution:

[0030] A composite explosion-proof thermocouple, comprising:

[0031] Main structure;

[0032] The main structure comprises a shell 1 and a thermocouple body 2 installed inside the shell 1 , a junction box 5 is installed at the upper end of the shell 1 ; a flange is arranged on the shell 1 , and a fixing hole is opened on the flange.

[0033] Specifically, a box cover 7 is installed on the top of the junction box 5, and a wiring tube 6 for connecting the wires is arranged on the side wall of the junction box 5. A detection end 3 is arranged at the lower end of the thermocouple body 2, and the upper end of the thermocouple body 2 extends into the junction box 5 and is connected to a terminal 4. The equipment is installed in a suitable position through a flange, and the detection end 3 of the thermocouple body 2 is inserted into the area to be detected. The box cover 7 of the junction box 5 is opened, and the wire is connected to the terminal 4 of the thermocouple body 2 after passing through the wiring sleeve, and then the box cover 7 is closed. After the wire is connected, the area to be detected can be detected.

[0034] A heat dissipation mechanism arranged outside the thermocouple body 2;

[0035] Among them, the heat dissipation mechanism includes a heat pipe 8 and a heat sink 9 integrally formed on the outer wall of the heat pipe 8. The heat pipe 8 is located inside the shell 1 and is sleeved on the outside of the thermocouple body 2. There are multiple groups of heat sinks 9 distributed equidistantly around the outer wall of the large heat pipe. The heat sink 9 is sealed and plugged into the shell 1, and the end of the heat sink 9 extends to the outside of the shell 1. A ventilation structure is provided on the heat sink 9.

[0036] Specifically, the material of the heat pipe 8 and the heat sink 9 is copper or aluminum. During the use of the equipment, the heat pipe 8 absorbs the heat in the thermocouple and conducts it to the outside of the shell 1 through the heat sink 9 for heat dissipation, thereby forming cooling protection for the thermocouple, thereby extending the service life of the thermocouple, reducing maintenance costs and replacement frequency, and improving economic benefits. At the same time, it reduces the impact on sensitive components and improves the measurement accuracy and stability of the thermocouple.

[0037] For further information, see Figure 4-5 :

[0038] The ventilation structure includes ventilation holes 10 and heat dissipation gaps 11 arranged on the heat sink 9 . The ventilation holes 10 and the heat dissipation gaps 11 are arranged in an array on the heat sink 9 in a plurality of groups.

[0039] The heat sink 9 is provided with a ventilation structure including a plurality of ventilation holes 10 and a plurality of heat dissipation gaps 11. When the heat sink 9 contacts the air for heat dissipation, the ventilation holes 10 and the heat dissipation gaps 11 can increase the contact area, thereby improving the heat dissipation and cooling capacity.

[0040] In addition, see 1-3 and Figure 6 In order to further improve the heat dissipation and cooling capacity of the device, the present application may also make the following designs:

[0041] The device also includes an auxiliary mechanism disposed outside the housing 1 to improve the heat dissipation capacity of the device, and the auxiliary mechanism includes a jacket 12. An air inlet 13 connected to the inside of the jacket 12 is disposed on a side wall of the lower end of the jacket 12, and an air outlet 14 connected to the inside of the jacket 12 is disposed on an outer wall of one side of the upper end of the jacket 12. A fixing frame 15 is disposed inside the air outlet 14, and a fan 16 is mounted on the fixing frame 15.

[0042] An auxiliary mechanism including a jacket 12 is arranged outside the housing 1, an air outlet 14 is arranged at the upper end of the jacket 12, an air inlet 13 is arranged at the lower end, and a fan 16 is arranged in the air outlet 14. The jacket 12 surrounds the protruding heat sink 9. The fan 16 draws external air from the air inlet 13 and discharges it through the air outlet 14. In this process, the air contacts the heat sink 9 and forms convection heat exchange to take away the heat, thereby improving the heat dissipation and cooling capacity of the device.

[0043] The air inlet 13 is arranged at the bottom and the air outlet 14 is arranged at the top, so that the convection capacity can be improved by utilizing the principle that hot air rises.

[0044] For further information, see Figure 6 :

[0045] The air inlet 13 has a threaded sleeve 17 installed on its internal thread, and a dust screen 19 is arranged inside the threaded sleeve 17. A knob is integrally formed at the end of the threaded sleeve 17, and an internal thread section 18 matching the threaded sleeve 17 is arranged on the inner wall of the air inlet 13.

[0046] An internal threaded section 18 is provided on the inner wall of the air inlet 13 for installing a threaded sleeve 17 with a dustproof net 19. During the use of the equipment, the fan 16 draws air into the jacket 12 for heat exchange. When the air passes through the threaded sleeve 17, it can be filtered through the dustproof net 19, thereby preventing external dust and impurities from entering and preventing dust from adhering to the heat sink 9 and affecting its heat dissipation capacity.

[0047] 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 composite explosion-proof thermocouple, characterized in that: include: Main structure; The main structure comprises a housing (1) and a thermocouple body (2) installed inside the housing (1); a junction box (5) is installed at the upper end of the housing (1); A heat dissipation mechanism arranged outside the thermocouple body (2); The heat dissipation mechanism comprises a heat pipe (8) and a heat sink (9) integrally formed and arranged on the outer wall of the heat pipe (8); the heat pipe (8) is located inside the outer shell (1) and sleeved on the outside of the thermocouple body (2); a plurality of heat sinks (9) are evenly distributed around the outer wall of the large heat pipe; the heat sink (9) is sealed and plugged into the outer shell (1), and the end of the heat sink (9) extends to the outside of the outer shell (1); and a ventilation structure is arranged on the heat sink (9).

2. A composite explosion-proof thermocouple according to claim 1, characterized in that: The ventilation structure comprises ventilation holes (10) and heat dissipation gaps (11) arranged on the heat sink (9), and the ventilation holes (10) and heat dissipation gaps (11) are arranged in an array in a plurality of groups on the heat sink (9).

3. A composite explosion-proof thermocouple according to claim 1, characterized in that: It also includes an auxiliary mechanism arranged outside the housing (1) for improving the heat dissipation capacity of the device, and the auxiliary mechanism includes a jacket (12).

4. A composite explosion-proof thermocouple according to claim 3, characterized in that: An air inlet (13) connected to the interior of the jacket (12) is provided on a side wall at the lower end of the jacket (12), and an air outlet (14) connected to the interior of the jacket (12) is provided on an outer wall at one side of the upper end of the jacket (12).

5. A composite explosion-proof thermocouple according to claim 4, characterized in that: A fixing frame (15) is arranged inside the air outlet (14), and a fan (16) is mounted on the fixing frame (15).

6. A composite explosion-proof thermocouple according to claim 4, characterized in that: The air inlet (13) is threadedly mounted with a threaded sleeve (17), and a dustproof net (19) is disposed inside the threaded sleeve (17).

7. A composite explosion-proof thermocouple according to claim 6, characterized in that: The end of the threaded sleeve (17) is integrally formed with a knob, and the inner wall of the air inlet (13) is provided with an internal thread section (18) that matches the threaded sleeve (17).

8. The composite explosion-proof thermocouple according to claim 1, characterized in that: The housing (1) is provided with a flange, and the flange is provided with a fixing hole.

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