An automatic temperature monitoring probe for high-temperature nitriding kilns

Abstract

This utility model relates to the field of temperature probe technology, specifically an automatic temperature monitoring probe for a high-temperature nitriding kiln. It includes a temperature sensor, a temperature probe tube at the bottom of the sensor, a protective mechanism on the outer wall of the temperature probe tube, and a furnace-kiln connection pipe at the bottom of the protective mechanism. The advantages are: by cooperating with the temperature probe tube, the protective mechanism, and the furnace-kiln connection pipe, when the insulation pad is damaged beyond repair, rotating the rotating nut and threaded pipe causes the bottom fixing ring to move on the outer wall of the temperature probe tube. This allows the extrusion plate to slide off the furnace-kiln connection pipe along the outer wall of the limiting component, enabling the insulation pad to be removed and replaced from the top of the bottom extrusion plate. This reduces cumbersome operations and improves maintenance efficiency. Furthermore, by providing two combinable protective shells on the outside of the temperature probe tube, the probe tube can be protected internally, preventing damage and safety hazards.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature measurement probes, and particularly relates to an automatic temperature measurement and monitoring probe for a high-temperature nitriding kiln. Background Technique

[0002] In various related industrial fields such as electric power, building materials, petrochemical, and metallurgy, various combustion processes are often the most important links in the entire production process. Achieving real-time monitoring of the combustion process has important value for preventing accidents, improving production safety rates and product quality, and realizing the efficient and economic operation of production process equipment. The automatic temperature measurement and monitoring probe for a high-temperature nitriding kiln is a key device for automatically monitoring temperature in a high-temperature environment. It usually includes core components such as a thermocouple element, a protective sleeve, and a signal transmission unit. The thermocouple element realizes temperature measurement through the principle of the thermoelectric effect and is suitable for extremely high-temperature environments. For example, a platinum-rhodium thermocouple is suitable for an environment of ≤1700°C, while a tungsten-rhenium alloy thermocouple can withstand a high temperature of ≤1800°C.

[0003] When a traditional temperature measurement probe is installed on a kiln furnace, the probe is inserted into the kiln furnace through a connecting pipe. An insulating pad is usually arranged between the connecting pipe and the temperature measurement instrument to avoid the dissipation of the high temperature of the kiln furnace. After long-term use, the insulating pad will carbonize and deform, and the sealing coating will fall off. To ensure qualified quality, replacing the sealing pad often requires cumbersome operations, which affects production efficiency. At the same time, the temperature measurement tube of the temperature measurement probe is generally long to avoid the temperature in the furnace being conducted to the temperature measurement instrument through the temperature measurement tube and reducing the life of the instrument. However, the temperature measurement tube exposed outside the kiln furnace is still relatively hot and fragile, which is likely to cause potential safety hazards and increase maintenance costs and safety risks. Content of the Utility Model

[0004] The purpose of the utility model is to provide an automatic temperature measurement and monitoring probe for a high-temperature nitriding kiln to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: An automatic temperature measurement and monitoring probe for a high-temperature nitriding kiln, including a temperature measurer, a temperature measurement probe tube is arranged at the bottom of the temperature measurer, a protection mechanism is arranged on the outer wall of the temperature measurement probe tube, and a furnace kiln docking tube is arranged at the bottom of the protection mechanism;

[0006] The protection mechanism includes a rotating nut, the inner wall of the rotating nut is threadedly connected with a threaded tube, the threaded tube is slidably connected with the outer wall of the temperature measurement probe tube, the top of the outer wall of the threaded tube is rotatably connected with a fixed ring, and the bottom of the outer wall of the fixed ring is fixedly connected with a bottom fixed ring.

[0007] Preferably: The bottom fixed ring is slidably connected with the outer wall of the temperature measurement probe tube, a pressing plate is fixedly connected to the bottom of the bottom fixed ring, and four limiting holes are formed through the top of the pressing plate.

[0008] Preferably, the furnace connecting pipe includes four limiting members, the outer walls of the four limiting members are inserted into the four limiting holes, the bottom end of the limiting members is fixedly connected to a bottom extrusion plate, the bottom of the bottom extrusion plate is fixedly connected to the connecting pipe, and the bottom of the connecting pipe is welded to the nitriding kiln.

[0009] Preferably, the bottom extrusion plate has two heat insulation pads on its top. When the four connecting rods are vertical, the tops of the two heat insulation pads are in contact with the protective springs, and the bottoms are in contact with the bottom extrusion plate.

[0010] Preferably, both sides of the fixing ring and the bottom fixing ring are fixedly connected to connecting members, and one side of each of the four connecting members is rotatably connected to a connecting rod. The connecting rods on the same side are grouped together, and the end of the connecting rod in the same group away from the connecting member is rotatably connected to a fixing member.

[0011] Preferably, a protective shell is fixedly connected to the opposite sides of the two fasteners. When the four connecting rods are vertical, the two protective shells are in contact with each other, and a protective spring is sleeved on the outer wall of the threaded tube.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This utility model proposes an automatic temperature monitoring probe for high-temperature nitriding kilns. It optimizes the existing temperature monitoring probe structure by cooperating with the temperature probe tube, protection mechanism, and furnace-kiln connection pipe. When the insulation pad is damaged beyond repair, rotating the rotating nut and threaded pipe causes the bottom fixing ring to move on the outer wall of the temperature probe tube. This allows the extrusion plate to slide off the outer wall of the limiting component and detach from the furnace-kiln connection pipe, enabling the insulation pad to be removed and replaced from the top of the bottom extrusion plate. This reduces cumbersome operations and improves maintenance efficiency. Furthermore, by providing two combinable protective shells on the outside of the temperature probe tube, it can be protected internally, preventing damage and safety hazards. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0016] Figure 3 This is a schematic diagram of the protective mechanism structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the furnace and kiln connecting pipe structure of this utility model.

[0018] In the diagram: 1. Temperature sensor; 2. Temperature probe; 3. Protection mechanism; 4. Furnace connecting pipe; 31. Rotating nut; 32. Threaded pipe; 33. Fixing ring; 34. Connecting piece; 35. Connecting rod; 36. Fixing piece; 37. Protective shell; 38. Bottom fixing ring; 39. Protective spring; 310. Extrusion plate; 311. Limiting hole; 41. Connecting pipe; 42. Bottom extrusion plate; 43. Limiting piece; 44. Insulation pad. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] Please see the appendix Figure 1-4 This application provides the following technical solutions.

[0021] An automatic temperature monitoring probe for a high-temperature nitriding kiln includes a thermometer 1, a temperature sensing tube 2 at the bottom of the thermometer 1, a protective mechanism 3 on the outer wall of the temperature sensing tube 2, and a furnace-kiln connection pipe 4 at the bottom of the protective mechanism 3. The protective mechanism 3 includes a rotating nut 31, a threaded tube 32 threadedly connected to the inner wall of the rotating nut 31, the threaded tube 32 being slidably connected to the outer wall of the temperature sensing tube 2, a fixing ring 33 rotatably connected to the top of the outer wall of the threaded tube 32, and a bottom fixing ring 33 fixedly connected to the bottom of the outer wall of the fixing ring 33. The bottom fixing ring 38 is slidably connected to the outer wall of the temperature measuring probe 2. The bottom of the bottom fixing ring 38 is fixedly connected to the extrusion plate 310. The top of the extrusion plate 310 is provided with four limiting holes 311. The furnace connecting pipe 4 includes four limiting members 43. The outer walls of the four limiting members 43 are correspondingly inserted into the four limiting holes 311. The bottom end of the limiting member 43 is fixedly connected to the bottom extrusion plate 42. The bottom of the bottom extrusion plate 42 is fixedly connected to the connecting pipe 41. The bottom of the connecting pipe 41 is welded to the nitriding kiln.

[0022] It should be noted that during use, the operator inserts the temperature probe 2 into the nitriding kiln through the connecting pipe 41. The temperature probe 2 contacts the high-temperature air inside the nitriding kiln, sending a signal to the thermometer 1, enabling the thermometer 1 to detect specific temperature data. However, the temperature probe 2 exposed outside the nitriding kiln remains at a high temperature and is relatively fragile. The operator rotates the nut 31, causing the threaded tube 32 to rotate within the fixing ring 33. This rotates the bottom fixing ring 38 upwards, shortening the distance between the fixing ring 33 and the bottom fixing ring 38. At this time, the connecting rod 35 rotates within the connecting member 34, causing the connecting rod 35 to gradually rotate from vertical to horizontal, pushing the fixing member 36 to move to both sides, causing the two protective shells 37 to unfold to both sides, compressing the protective spring 39, driving the extrusion plate 310 to move, causing the limiting member 43 to disengage from the inner wall of the limiting hole 311, so that the damaged insulation pad 44 at the top of the bottom extrusion plate 42 can be removed and replaced. The position of the new insulation pad 44 is determined by the limiting member 43, and the bottom fixing ring 38 is moved downward by rotating the rotating nut 31 until the extrusion plate 310 and the bottom extrusion plate 42 press and fix the insulation pad 44.

[0023] Two heat insulation pads 44 are provided on the top of the bottom extrusion plate 42. When the four connecting rods 35 are vertical, the top of the two heat insulation pads 44 are in contact with the protective spring 39, and the bottom is in contact with the bottom extrusion plate 42. The fixing ring 33 and the bottom fixing ring 38 are fixedly connected to the two sides of the connecting member 34. The four connecting members 34 are rotatably connected to the connecting rod 35 on one side. The connecting rods 35 on the same side are divided into a group. The end of the connecting rod 35 in the same group away from the connecting member 34 is rotatably connected to the fixing member 36. The opposite sides of the two fixing members 36 are fixedly connected to the protective shell 37. When the four connecting rods 35 are vertical, the two protective shells 37 are in contact. The outer wall of the threaded tube 32 is fitted with the protective spring 39.

[0024] It should be noted that during use, the operator inserts the temperature probe 2 into the nitriding kiln through the connecting pipe 41. The temperature probe 2 contacts the high-temperature air inside the nitriding kiln and sends a signal to the thermometer 1, enabling the thermometer 1 to detect specific temperature data. However, the temperature probe 2 exposed outside the nitriding kiln is still at a high temperature and is relatively fragile. The operator rotates the nut 31, causing the nut 31 to move in a threaded motion with the threaded pipe 32. Through the fixing part 36, the two protective shells 37 are driven to merge and protect the temperature probe 2 inside, avoiding any safety hazards.

[0025] In use, the operator inserts the temperature probe 2 into the nitriding kiln through the connecting pipe 41. The temperature probe 2 contacts the high-temperature air inside the kiln, sending a signal to the temperature sensor 1, enabling the sensor 1 to detect specific temperature data. However, the temperature probe 2 exposed outside the kiln remains hot and fragile. The operator rotates the nut 31, causing it to thread with the threaded tube 32. This rotates the threaded tube 32 within the fixing ring 33, causing the bottom fixing ring 38 to move upwards, shortening the distance between the fixing ring 33 and the bottom fixing ring 38. At this time, the connecting rod 35 rotates within the connecting piece 34, connecting... The rod 35 gradually rotates from vertical to horizontal, pushing the fixing part 36 to move to both sides, causing the two protective shells 37 to unfold to both sides, compressing the protective spring 39, and driving the extrusion plate 310 to move, causing the limiting part 43 to disengage from the inner wall of the limiting hole 311. The damaged insulation pad 44 at the top of the bottom extrusion plate 42 can be removed and replaced. The position of the new insulation pad 44 is determined by the limiting part 43. Then, by rotating the rotating nut 31, the bottom fixing ring 38 moves downward until the extrusion plate 310 and the bottom extrusion plate 42 press and fix the insulation pad 44. The fixing part 36 drives the two protective shells 37 to merge and protect the temperature measuring probe 2 inside, avoiding safety hazards.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic temperature monitoring probe for a high-temperature nitriding kiln, comprising a thermometer (1), a temperature probe tube (2) provided at the bottom of the thermometer (1), a protection mechanism (3) provided on the outer wall of the temperature probe tube (2), and a furnace-kiln connecting pipe (4) provided at the bottom of the protection mechanism (3). Its features are: The protective mechanism (3) includes a rotating nut (31), the inner wall of which is threadedly connected to a threaded tube (32), the threaded tube (32) is slidably connected to the outer wall of the temperature probe (2), a fixing ring (33) is rotatably connected to the top of the outer wall of the threaded tube (32), and a bottom fixing ring (38) is fixedly connected to the bottom of the outer wall of the fixing ring (33). Both sides of the fixed ring (33) and the bottom fixed ring (38) are fixedly connected to the connectors (34), and one side of each of the four connectors (34) is rotatably connected to the connecting rod (35). The connecting rods (35) on the same side are divided into a group, and the end of the connecting rod (35) in the same group away from the connector (34) is rotatably connected to the fixing member (36). The furnace connecting pipe (4) includes four limiting members (43), the outer walls of the four limiting members (43) are correspondingly inserted into the four limiting holes (311), the bottom end of the limiting member (43) is fixedly connected to a bottom extrusion plate (42), the bottom of the bottom extrusion plate (42) is fixedly connected to the connecting pipe (41), and the bottom of the connecting pipe (41) is welded to the nitriding kiln. The bottom extrusion plate (42) has two heat insulation pads (44) on its top. When the four connecting rods (35) are vertical, the top of the two heat insulation pads (44) are in contact with the protective spring (39), and the bottom is in contact with the bottom extrusion plate (42).

2. The automatic temperature measuring monitoring probe of the high-temperature nitriding furnace according to claim 1, characterized in that: The bottom fixing ring (38) is slidably connected to the outer wall of the temperature measuring probe (2), and the bottom of the bottom fixing ring (38) is fixedly connected to the extrusion plate (310), and the top of the extrusion plate (310) is provided with four limiting holes (311).

3. The automatic temperature measuring monitoring probe of the high-temperature nitriding furnace according to claim 1, characterized in that: The two fasteners (36) are fixedly connected to protective shells (37) on opposite sides. When the four connecting rods (35) are vertical, the two protective shells (37) are in contact with each other. The outer wall of the threaded tube (32) is fitted with a protective spring (39).

Images