A high-temperature heat dissipation temperature transmitter

Abstract

This invention discloses a high-temperature resistant heat-dissipating temperature transmitter, relating to the field of temperature measuring instrument technology. It includes a junction box containing a chip board; a protective tube connected to the bottom of the junction box; a heat sink near the upper end of the protective tube; piston cylinders on both sides of the heat sink; piston assemblies within each piston cylinder; and electrically operated telescopic rods connected to the outer walls of both sides of the protective tube. The reciprocating motion of the piston blocks within the piston cylinders facilitates the removal of hot air from the heat sink at the upper end of the protective tube and directs it to a diversion heat dissipation conduit assembly within the coolant storage box. The diversion heat dissipation conduit assembly rotates to facilitate rapid and effective heat exchange with the coolant, allowing the air to cool down and return to the heat sink for further heat absorption. This prevents heat from the temperature measuring end at the bottom of the protective tube from being transferred along the protective tube into the junction box, thus avoiding any impact on the chip control components within the junction box.

Description

Technical Field

[0001] This invention relates to the field of temperature measuring instrument technology, and specifically to a high-temperature heat dissipation temperature transmitter. Background Technology

[0002] Temperature transmitters are temperature measuring instruments widely used in industrial environments. To extend their service life, the temperature measuring element thermocouple in temperature transmitters is usually equipped with a protective tube with good thermal conductivity. When the temperature transmitter measures a high-temperature medium, the medium temperature will be conducted to the junction box along the protective tube and the wire connected to the cold junction of the thermocouple, causing the temperature inside the junction box to rise further, which seriously affects the measurement accuracy and service life of the temperature transmitter. Therefore, heat dissipation is required.

[0003] Chinese patent CN219368966U discloses a rapid heat dissipation temperature transmitter. The lower end face of the junction box is coated with thermal grease, and the wires extending into the inner cavity of the junction box are wrapped in the thermal grease. A heat dissipation chamber is provided outside the junction box, and the chamber is filled with coolant. This design relies on the thermal grease to rapidly transfer the temperature conducted from the thermocouple to the wires to the lower end face of the junction box and then to the outside, thus achieving heat dissipation.

[0004] The shortcomings of the above-mentioned existing technical solutions are as follows: Although the above solutions can dissipate heat at the junction box end of the temperature transmitter, they can only rely on the thermal grease placed at the bottom of the junction box for heat transfer. The heat transfer speed is slow, resulting in poor heat dissipation effect. In cases of high temperature, it is difficult to guarantee the heat dissipation effect, which can easily cause the control chip components inside the junction box to be damaged by high temperature. Summary of the Invention

[0005] The purpose of this invention is to provide a high-temperature heat-dissipating temperature transmitter to solve the technical problem that the heat dissipation effect of the temperature transmitter in the prior art is poor, which easily leads to damage to the control chip components in the junction box.

[0006] The technical problem to be solved by this invention can be achieved through the following technical solution:

[0007] A high-temperature heat dissipation temperature transmitter includes a junction box, inside which a chip board is installed; a protective tube is connected to the bottom of the junction box, and a thermocouple temperature sensing component electrically connected to the chip board is installed at the bottom of the inner side of the protective tube.

[0008] A heat dissipation box is provided near the upper end of the protective tube. Piston cylinders are provided on both sides of the heat dissipation box. Piston assemblies are provided in both piston cylinders. Electric telescopic rods are connected to the outer walls of both sides of the protective tube. A lifting ring is slidably sleeved on the outer wall of the protective tube and connected to the telescopic end of the electric telescopic rod. The lifting ring is connected to the piston assembly.

[0009] A one-way intake valve assembly is connected between the end of the piston cylinder near the protective tube and the heat sink box; a one-way exhaust valve assembly is provided on the lower side of the end of the piston cylinder near the protective tube; a coolant storage box is provided at the bottom of the one-way exhaust valve assembly.

[0010] The coolant storage box has a first pair of connecting pipe sleeves at its bottom, and a return air pipe is connected between the bottom side of the first pair of connecting pipe sleeves and the heat sink box; the bottom end of the one-way exhaust valve assembly is connected to a second pair of connecting pipe sleeves, and a diversion heat duct assembly is rotatably connected between the first pair of connecting pipe sleeves and the second pair of connecting pipe sleeves. A gear ring is coaxially connected to the diversion heat duct assembly. A ball screw is rotatably connected to the bottom of the coolant storage box, and a drive gear that meshes with the gear ring is connected to the upper end of the ball screw; the bottom of the lifting ring is connected to a screw sleeve that cooperates with the ball screw.

[0011] As a further aspect of the present invention: the heat dissipation conduit assembly includes a first rotating block, a second rotating block, and a heat dissipation pipe. The first rotating block is rotatably disposed within a second pair of connecting pipe sleeves, and the second rotating block is rotatably disposed within a first pair of connecting pipe sleeves. The heat dissipation pipe is disposed between the first rotating block and the second rotating block, and both ends of the heat dissipation pipe pass through the first rotating block and the second rotating block respectively. The heat dissipation pipe is a heat dissipation metal pipe.

[0012] As a further aspect of the present invention: multiple diverter pipes are provided, and the multiple diverter pipes are circumferentially distributed between the first rotating block and the second rotating block.

[0013] As a further aspect of the present invention: a cone-shaped body is provided at the middle position of the upper end face of the first rotating block.

[0014] As a further aspect of the present invention: both the inner walls of the first and second connecting sleeves are provided with annular grooves, and the first and second rotating blocks are slidably connected to the corresponding annular grooves.

[0015] As a further aspect of the present invention: rubber sealing rings are connected to the inner walls of both the first and second connecting sleeves, and the first and second rotating blocks respectively cooperate with the corresponding rubber sealing rings.

[0016] As a further embodiment of the present invention: the piston assembly includes a piston block, a linkage rod, and a push-pull rod. The piston block is slidably connected inside the piston cylinder. The push-pull rod is connected to the piston block and passes through the piston cylinder. The end of the push-pull rod away from the piston block is movably connected to the linkage rod via a hinge. The end of the linkage rod away from the push-pull rod is movably connected to the lifting ring via a hinge.

[0017] As a further aspect of the present invention: the coolant storage box is a heat-dissipating metal box.

[0018] The beneficial effects of this invention are:

[0019] 1. The present invention uses an electric telescopic rod on the outer wall of the protective tube to drive the lifting ring to reciprocate. The lifting ring, in turn, drives the piston block in the piston cylinder to reciprocate, which facilitates the removal of hot air from the heat sink box at the upper end of the protective tube and discharges it into the diversion heat sink assembly in the coolant storage box. During the reciprocating motion of the lifting ring driven by the electric telescopic rod, the lifting ring is driven by a ball screw to rotate the drive gear, which in turn drives the diversion heat sink assembly to rotate, so as to facilitate rapid and effective heat exchange with the coolant. After being cooled by the air, the air returns to the heat sink box to continue absorbing heat, thereby preventing the heat from the temperature measuring end at the bottom of the protective tube from being transferred to the junction box along the protective tube and affecting the chip control components in the junction box.

[0020] 2. The heat dissipation duct assembly of the present invention includes multiple circumferentially distributed ducts. The hot air discharged into the coolant storage box by the one-way exhaust valve assembly can be distributed into each duct. Each airflow can fully exchange heat with the coolant through the corresponding duct, thereby improving the heat dissipation effect. Attached Figure Description

[0021] The invention will now be further described with reference to the accompanying drawings.

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a partially enlarged structural diagram of the connection between the piston cylinder and the heat sink box in this invention;

[0024] Figure 3 yes Figure 2 Enlarged structural diagram at point A;

[0025] Figure 4 This is a three-dimensional structural diagram of the first rotating block, the second rotating block, and the shunt pipe connected in this invention;

[0026] Figure 5 This is a top view schematic diagram of the gear ring and the second rotating block connected in this invention.

[0027] In the diagram: 1. Junction box; 2. Protective tube; 3. Chip board; 4. Heat sink; 5. Thermocouple temperature measuring assembly; 6. Electric telescopic rod; 7. Lifting ring; 8. Screw sleeve; 9. Ball screw; 10. Linkage rod; 11. Piston cylinder; 12. Piston block; 13. Push-pull rod; 14. Drive gear; 15. Coolant storage box; 16. One-way intake valve assembly; 17. Second connecting pipe sleeve; 18. One-way exhaust valve assembly; 19. Annular groove; 20. Rubber sealing ring; 21. First rotating block; 22. Diverter pipe; 23. Second rotating block; 24. First connecting pipe sleeve; 25. Return pipe; 26. Gear ring. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] like Figures 1-5 As shown, a high-temperature heat dissipation temperature transmitter includes a junction box 1. A chip board 3 is installed inside the junction box 1, and a wiring hole is also provided on the junction box 1 to facilitate wiring of the chip board 3 to external devices and facilitate electrical signal transmission. A protective tube 2 is connected to the bottom of the junction box 1. A thermocouple temperature sensing component 5, which is electrically connected to the chip board 3, is installed at the bottom of the inner side of the protective tube 2. The thermocouple temperature sensing component 5 detects the temperature in the environment to be measured. During the detection process, a thermoelectric potential is generated in the thermocouple circuit and electrically connected to the chip board 3 through a wire. Then, the chip board 3 converts it into a standard electrical signal and transmits it to the external device to realize accurate temperature measurement and control.

[0030] A heat sink 4 is installed near the upper end of the protective tube 2. Piston cylinders 11 are installed on both sides of the heat sink 4. A one-way suction valve assembly 16 is connected between the end of the piston cylinder 11 near the protective tube 2 and the heat sink 4. The one-way suction valve assembly 16 allows air in the heat sink 4 to be drawn into the piston cylinder 11, but prevents air from entering the heat sink 4 from the piston cylinder 11. A one-way exhaust valve assembly 18 is installed on the lower side of the end of the piston cylinder 11 near the protective tube 2. The one-way exhaust valve assembly 18 allows air in the piston cylinder 11 to be discharged, but prevents backflow.

[0031] Both piston cylinders 11 are provided with piston assemblies. The piston assembly includes a piston block 12, a linkage rod 10 and a push-pull rod 13. The piston block 12 is slidably connected inside the piston cylinder 11. The push-pull rod 13 is connected to the piston block 12 and passes through the piston cylinder 11. The end of the push-pull rod 13 away from the piston block 12 is movably connected to the linkage rod 10 through a hinge.

[0032] Electric telescopic rods 6 are connected to the outer walls of both sides of the protective tube 2. The electric telescopic rods 6 can continuously reciprocate. A lifting ring 7 is slidably sleeved on the outer wall of the protective tube 2 and connected to the telescopic end of the electric telescopic rod 6. The lifting ring 7 is also connected to the piston assembly. Specifically, the end of the linkage rod 10 away from the push-pull rod 13 is movably connected to the lifting ring 7 through a hinge. Thus, when the electric telescopic rod 6 retracts, the lifting ring 7 reciprocates. During this process, the lifting ring 7 drives the push-pull rod 13 in the piston cylinders 11 on both sides to reciprocate laterally through the linkage rod 10. The push-pull rod 13 then drives the piston block. 12 moves laterally along the piston cylinder 11. When the piston block 12 moves away from the one-way suction valve assembly 16, the piston cylinder 11 draws air from the heat sink 4 through the one-way suction valve assembly 16. When the piston block 12 moves close to the one-way suction valve assembly 16, the air in the piston cylinder 11 is discharged through the one-way exhaust valve assembly 18. In this way, the heat transferred to the chip board 3 along the protective tube 2 or the internal wires can be drawn away with the air when it reaches the heat sink 4, and then discharged through the one-way exhaust valve assembly 18 to achieve heat dissipation and avoid the high temperature from affecting the chip board 3.

[0033] The bottom of the one-way vent valve assembly 18 is provided with a coolant storage box 15, and the one-way vent valve assembly 18 passes through the top of the coolant storage box 15. The coolant storage box 15 is a heat-dissipating metal box to facilitate heat dissipation. The coolant storage box 15 is filled with coolant, and the top and bottom of the coolant storage box 15 are respectively provided with a filling pipe end and a drain pipe end to facilitate the replacement of the internal coolant.

[0034] A first pair of connecting pipe sleeves 24 is provided at the bottom of the coolant storage box 15, and a return pipe 25 is connected between the bottom side of the first pair of connecting pipe sleeves 24 and the heat sink 4. The return pipe 25 connects the first pair of connecting pipe sleeves 24 and the heat sink 4. A second pair of connecting pipe sleeves 17 is connected to the bottom end of the one-way exhaust valve assembly 18. A diversion heat pipe assembly is rotatably connected between the first pair of connecting pipe sleeves 24 and the second pair of connecting pipe sleeves 17. The diversion heat pipe assembly includes a first rotating block 21, a second rotating block 23 and a diversion pipe 22. The first rotating block 21 is rotatably disposed inside the second pair of connecting pipe sleeves 17. The second rotating block 23 is rotatably disposed inside the first pair of pipe sleeves 24. The inner walls of the first pair of pipe sleeves 24 and the second pair of pipe sleeves 17 are provided with annular grooves 19. The first rotating block 21 and the second rotating block 23 are slidably connected to the corresponding annular grooves 19. The inner walls of the first pair of pipe sleeves 24 and the second pair of pipe sleeves 17 are connected with rubber sealing rings 20. The first rotating block 21 and the second rotating block 23 are respectively engaged with the corresponding rubber sealing rings 20. The rubber sealing rings 20 are used to ensure the sealing of the connection position of the first pair of pipe sleeves 24 and the second pair of pipe sleeves 17.

[0035] Multiple diverter pipes 22 are provided, and the multiple diverter pipes 22 are circumferentially distributed between the first rotating block 21 and the second rotating block 23. The two ends of the diverter pipe 22 pass through the first rotating block 21 and the second rotating block 23 respectively. The diverter pipe 22 connects to the return pipe 25 and the one-way exhaust valve assembly 18. The diverter pipe 22 is a heat dissipation metal pipe. A cone is provided at the middle of the upper end face of the first rotating block 21. The cone facilitates the diversion of hot air transmitted from the one-way exhaust valve assembly 18 into each diverter pipe 22, and then flows along each diverter pipe 22 to the return pipe 25. When the hot air is diverted into each diverter pipe 22, it is convenient to dissipate heat fully by the diverter pipe 22. The heat is absorbed by the coolant in the coolant storage box 15, and the heat absorbed by the coolant can be dissipated to the external environment by the coolant storage box 15. The dissipated air returns to the heat dissipation box 4 through the return pipe 25, which facilitates the reabsorption of heat. In this way, the air circulates, which facilitates the interception of heat transferred to the junction box 1 and dissipation.

[0036] A gear ring 26 is coaxially connected to the heat dissipation duct assembly. A ball screw 9 is rotatably connected to the bottom of the coolant storage box 15, and the upper end of the ball screw 9 passes through the bottom of the coolant storage box 15. The upper end of the ball screw 9 is connected to a drive gear 14 that meshes with the gear ring 26. A screw sleeve 8 is connected to the bottom of the lifting ring 7. The lower end of the ball screw 9 passes through the lifting ring and the screw sleeve 8 in sequence and is connected to the screw sleeve 8. When the extension end of the electric telescopic rod 6 drives the lifting ring 7 to move up and down, the screw sleeve 8 moves up and down accordingly. Since the ball screw 9 is connected to the screw sleeve 8, the ball screw 9 rotates when the screw sleeve 8 moves up and down. The rotating ball screw 9 drives the drive gear 14 to rotate, the drive gear 14 drives the gear ring 26 to rotate, and the gear ring 26 drives the heat dissipation duct assembly to rotate, which facilitates heat exchange between the hot air and coolant in each duct 22 and achieves rapid and effective heat dissipation.

[0037] It should be noted that a circulating heat pipe can also be installed on the outside of the coolant storage box 15, which is not shown in the figure. The coolant is drawn by the pump and circulates along the circulating heat pipe to promote the dissipation of heat.

[0038] The working principle of this invention: The thermocouple temperature measuring component 5 detects the temperature in the environment to be measured. During the detection process, a thermoelectric electromotive force is generated in the thermocouple circuit and electrically connected to the chip board 3 through wires. Then, the chip board 3 converts it into a standard electrical signal and transmits it to the external device to realize accurate temperature measurement and control.

[0039] During temperature measurement, the electric telescopic rod 6 extends and retracts, causing the lifting ring 7 to reciprocate. During this process, the lifting ring 7, through the linkage rod 10, drives the push-pull rod 13 inside the piston cylinders 11 on both sides to reciprocate laterally. The push-pull rod 13 then drives the piston block 12 to reciprocate laterally along the piston cylinder 11. When the piston block 12 moves away from the one-way intake valve assembly 16, the piston cylinder 11 draws air from the heat sink 4 through the one-way intake valve assembly 16. When the piston block 12 moves closer to the one-way intake valve assembly 16, the air inside the piston cylinder 11 is discharged through the one-way exhaust valve assembly 18. This allows the heat transferred to the chip board 3 along the protective tube 2 or the internal wires to be exchanged with the air upon reaching the heat sink 4 and drawn into the piston cylinder 11. The heat is then discharged through the one-way exhaust valve assembly 18 into each of the branch pipes 22 in the branch heat sink assembly, and then along each branch... The hot air flows from pipe 22 to return pipe 25. When the hot air is distributed into each branch pipe 22, the electric telescopic rod 6 drives the lifting ring 7 to move up and down, and the lead screw sleeve 8 moves up and down accordingly. Since the ball screw 9 is connected to the lead screw sleeve 8, the ball screw 9 rotates when the lead screw sleeve 8 moves up and down. The rotating ball screw 9 drives the drive gear 14 to rotate, and the drive gear 14 drives the gear ring 26 to rotate. The gear ring 26 drives the branch cooling duct assembly to rotate, which facilitates heat exchange between the hot air and coolant in each branch pipe 22, achieving rapid and effective heat dissipation. Since the coolant storage box 15 is a heat-dissipating metal box, it is convenient for the heat absorbed by the coolant to dissipate to the external environment. The cooled air returns to the heat sink box 4 through the return pipe 25, which is convenient for reabsorbing heat. In this way, the air circulation is convenient for intercepting the heat transferred to the junction box 1, effectively protecting the chip board 3.

[0040] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A high-temperature heat-dissipating temperature transmitter, comprising a junction box (1), wherein a chip board (3) is disposed inside the junction box (1); a protective tube (2) is connected to the bottom of the junction box (1), and a thermocouple temperature measuring component (5) electrically connected to the chip board (3) is disposed inside the bottom of the protective tube (2); characterized in that: The protective tube (2) is provided with a heat dissipation box (4) near the upper end. Both sides of the heat dissipation box (4) are provided with piston cylinders (11). Both piston cylinders (11) are provided with piston assemblies. Electric telescopic rods (6) are connected to the outer walls of both sides of the protective tube (2). A lifting ring (7) connected to the telescopic end of the electric telescopic rod (6) is slidably sleeved on the outer wall of the protective tube (2). The lifting ring (7) is connected to the piston assembly. A one-way intake valve assembly (16) is connected between the piston cylinder (11) near the protective tube (2) and the heat sink box (4); a one-way exhaust valve assembly (18) is provided on the lower side of the piston cylinder (11) near the protective tube (2); a coolant storage box (15) is provided at the bottom of the one-way exhaust valve assembly (18). The coolant storage box (15) is provided with a first pair of pipe sleeves (24) at the bottom, and a return pipe (25) is connected between the bottom side of the first pair of pipe sleeves (24) and the heat sink box (4); the bottom end of the one-way exhaust valve assembly (18) is connected to a second pair of pipe sleeves (17), and a diversion heat sink assembly is rotatably connected between the first pair of pipe sleeves (24) and the second pair of pipe sleeves (17). A gear ring (26) is coaxially connected to the diversion heat sink assembly. A ball screw (9) is rotatably connected to the bottom of the coolant storage box (15), and a drive gear (14) meshing with the gear ring (26) is connected to the upper end of the ball screw (9); the bottom of the lifting ring (7) is connected to a screw sleeve (8) that is engaged with the ball screw (9). The heat dissipation conduit assembly includes a first rotating block (21), a second rotating block (23), and a heat dissipation pipe (22). The first rotating block (21) is rotatably disposed within a second connecting pipe sleeve (17), and the second rotating block (23) is rotatably disposed within a first connecting pipe sleeve (24). The heat dissipation pipe (22) is disposed between the first rotating block (21) and the second rotating block (23), and both ends of the heat dissipation pipe (22) pass through the first rotating block (21) and the second rotating block (23) respectively. The heat dissipation pipe (22) is a heat dissipation metal pipe. Multiple diverter pipes (22) are provided, and the multiple diverter pipes (22) are circumferentially distributed between the first rotating block (21) and the second rotating block (23).

2. A high temperature, heat sink type temperature transmitter according to claim 1 wherein, A cone-shaped body is provided at the middle position of the upper end face of the first rotating block (21).

3. The high temperature, heat sinked temperature transmitter of claim 1 wherein, The inner walls of the first pair of pipe sleeves (24) and the second pair of pipe sleeves (17) are provided with annular grooves (19), and the first rotating block (21) and the second rotating block (23) are slidably connected to the corresponding annular grooves (19).

4. The high temperature, heat sinked temperature transmitter of claim 1 wherein, The inner walls of the first connecting sleeve (24) and the second connecting sleeve (17) are both connected with rubber sealing rings (20), and the first rotating block (21) and the second rotating block (23) respectively cooperate with the corresponding rubber sealing rings (20).

5. A high-temperature heat-dissipating temperature transmitter according to claim 1, characterized in that, The piston assembly includes a piston block (12), a linkage rod (10), and a push-pull rod (13). The piston block (12) is slidably connected inside the piston cylinder (11). The push-pull rod (13) is connected to the piston block (12) and passes through the piston cylinder (11). The end of the push-pull rod (13) away from the piston block (12) is movably connected to the linkage rod (10) via a hinge. The end of the linkage rod (10) away from the push-pull rod (13) is movably connected to the lifting ring (7) via a hinge.

6. A high-temperature heat-dissipating temperature transmitter according to claim 1, characterized in that, The coolant storage box (15) is a heat dissipation metal box.

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