Device for detecting internal temperature of graphite furnace
By designing a temperature detection device that can switch the temperature measurement probe, the problem that the probe cannot monitor the temperature increase process and PID curve when the traditional graphite furnace is below 1000℃, and the effect of normal operation of experiments below 1000℃ is achieved.
Patent Information
- Application Number
- CN202421251771.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-03
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-06-03
AI Technical Summary
When a traditional graphite furnace is below 1000℃, the high-temperature detection probe cannot monitor the heating process and PID curve, resulting in experiments below 1000℃ that cannot be performed in the graphite furnace.
A temperature detection device that can switch temperature measurement probes is designed. When the internal temperature of the graphite furnace is lower than 1000℃, a low-temperature probe is used to measure the temperature. When the temperature rises above 1000℃, a high-temperature probe is quickly switched for temperature measurement.
The effect of normally monitoring the heating process and PID curve at below 1000°C was achieved, so that experiments below 1000°C could be carried out normally in the graphite furnace.
Smart Images
Figure CN222598547U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of graphite furnace temperature detection, in particular to a graphite furnace internal temperature detection device. Background Art
[0002] Graphite furnace is a heating equipment commonly used in laboratories, industries and research fields. It is usually used for high temperature experiments and material heat treatment. Graphite furnace has the advantages of high temperature stability, rapid heating and cooling, high temperature reaction environment, corrosion resistance, flexibility and environmental protection and energy saving. Therefore, it is widely used in material heat treatment, analytical chemistry, powder metallurgy, crystal growth and laboratory research.
[0003] The prior art has the following deficiencies: the internal temperature of a traditional graphite furnace is extremely high during operation, and a high-temperature detection probe is installed inside the furnace to monitor the temperature of the inner tank of the graphite furnace in real time. Since the lowest temperature value that the high-temperature probe can detect is relatively high, when the internal temperature of the graphite furnace is below 1000°C, the high-temperature detection probe cannot monitor the heating process and the PID curve. Only when the internal temperature of the graphite furnace rises to more than 1000°C can the temperature inside the furnace be detected, resulting in the problem that experiments below 1000°C cannot be carried out in the graphite furnace.
[0004] Therefore, it is necessary to invent a device for detecting the internal temperature of a graphite furnace. Utility Model Content
[0005] To this end, the utility model provides a device for detecting the internal temperature of a graphite furnace. Through a temperature detection device capable of switching temperature measuring probes, a low-temperature probe is used to measure the temperature when the internal temperature of the graphite furnace is lower than 1000°C. When the internal temperature of the graphite furnace rises to above 1000°C, the high-temperature probe is quickly switched to measure the temperature, so as to solve the problem that when the internal temperature of a traditional graphite furnace is below 1000°C, the probe cannot monitor the heating process and PID curve. Only when the internal temperature of the graphite furnace rises to more than 1000°C can the furnace temperature be detected, resulting in the problem that experiments below 1000°C cannot be conducted in the graphite furnace.
[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for detecting the internal temperature of a graphite furnace, comprising an outer furnace shell, one end of the outer furnace shell is open, an end plate is fixedly installed on the inner wall of the open end of the outer furnace shell, the end plate is in a circular ring structure, a graphite inner shell is fixedly installed on the inner wall of the end plate, an end of the graphite inner shell away from the end plate extends to the inside of the outer furnace shell and is fixedly connected to an end sealed with the inner wall of the outer furnace shell, a temperature detection device is installed between the inner wall of the outer furnace shell and the outer wall of the graphite inner shell, the temperature detection device includes a low-temperature probe and a high-temperature probe, and the temperature detection device can extend the low-temperature probe or the high-temperature probe into the inside of the graphite inner shell for temperature measurement.
[0007] Preferably, the temperature detection device comprises a rotating seat, the outer wall of the graphite inner shell is provided with grooves around it, and the rotating seat is fixedly installed at the center of both sides of the grooves on the outer wall of the graphite inner shell.
[0008] Preferably, the tail of the low-temperature probe is fixedly connected to the tail of the high-temperature probe, and the connection between the low-temperature probe and the high-temperature probe is rotatably installed between the rotating seats on both sides of the groove of the graphite inner shell, and the low-temperature probe or the high-temperature probe can be rotated to extend into the inner wall of the graphite inner shell.
[0009] Preferably, the temperature detection device includes a ring, which is sleeved on the outside of the graphite inner shell and arranged at the groove of the outer wall of the graphite inner shell. A first sliding ring is arranged on the side of the ring close to the end plate, and a second sliding ring is arranged on the side of the ring away from the end plate.
[0010] Preferably, the first sliding ring and the second sliding ring are both slidably mounted on the outer wall of the graphite inner shell, a connecting plate is fixedly connected between the sleeve ring, the first sliding ring and the second sliding ring, a side of the first sliding ring and the second sliding ring close to each other is set as a curved surface, and the first sliding ring and the second sliding ring are provided with grooves near the grooves of the graphite inner shell.
[0011] Preferably, the temperature detection device comprises a slide bar, and the slide bar is fixedly mounted on both sides of one end of the low-temperature probe close to the rotating seat, and on both sides of one end of the high-temperature probe close to the rotating seat.
[0012] Preferably, a hydraulic push rod is fixedly mounted on one side of the end plate close to the inner wall of the outer furnace shell, and one end of the hydraulic push rod away from the end plate is fixedly connected to a side of the first sliding ring away from the second sliding ring.
[0013] Preferably, a hatch is rotatably mounted on one end of the opening of the outer furnace shell, the hatch can be rotated to close the end plate, and a base is fixedly mounted on the bottom surface of the outer furnace shell.
[0014] The beneficial effect of the utility model is that: through the temperature detection device capable of switching temperature measuring probes, a low-temperature probe is used to measure the temperature when the temperature inside the graphite furnace is lower than 1000°C, and when the temperature inside the graphite furnace rises to above 1000°C, the high-temperature probe is quickly switched to measure the temperature, so as to achieve the effect of normally monitoring the heating process and the PID curve below 1000°C, so that experiments below 1000°C can be carried out normally in the graphite furnace. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a front view of a graphite furnace internal temperature detection device provided by the utility model;
[0016] Figure 2 An exploded diagram of a graphite furnace internal temperature detection device provided by the utility model;
[0017] Figure 3 A cross-sectional view of an outer furnace shell of a graphite furnace internal temperature detection device provided by the utility model;
[0018] Figure 4 A cross-sectional view of a temperature detection device of a graphite furnace internal temperature detection device provided by the utility model;
[0019] Figure 5 A cross-sectional view of a temperature detection device of a graphite furnace internal temperature detection device provided by the utility model.
[0020] In the figure: outer furnace shell 11, end plate 12, graphite inner shell 13, hatch 14, base 15, swivel seat 21, low temperature probe 22, high temperature probe 23, slide bar 24, hydraulic push rod 25, collar 26, connecting plate 27, first sliding ring 28, second sliding ring 29. DETAILED DESCRIPTION
[0021] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.
[0022] Example 1
[0023] like Figure 1-Figure 3 As shown, a graphite furnace internal temperature detection device in an embodiment of the first aspect of the utility model comprises an outer furnace shell 11, one end of the outer furnace shell 11 is open, an end plate 12 is fixedly installed on the inner wall of the open end of the outer furnace shell 11, the end plate 12 is a circular ring structure, a graphite inner shell 13 is fixedly installed on the inner wall of the end plate 12, one end of the graphite inner shell 13 away from the end plate 12 extends to the inside of the outer furnace shell 11 and is fixedly connected to the end sealed with the inner wall of the outer furnace shell 11, a temperature detection device is installed between the inner wall of the outer furnace shell 11 and the outer wall of the graphite inner shell 13, the temperature detection device comprises a low-temperature probe 22 and a high-temperature probe 23, and the temperature detection device can extend the low-temperature probe 22 or the high-temperature probe 23 into the inside of the graphite inner shell 13 for temperature measurement.
[0024] In the above embodiment, it should be noted that the outer furnace shell 11 is made of metal, the inner diameter of the outer furnace shell 11 is larger than the diameter of the graphite inner shell 13, the temperature measuring range of the low-temperature probe 22 is (0-1200°C), and the temperature measuring range of the high-temperature probe 23 is (above 1000°C). By using a temperature detection device capable of switching the temperature measuring probes, the low-temperature probe 22 is used to measure the temperature when the temperature inside the graphite furnace is lower than 1000°C. When the temperature inside the graphite furnace rises to above 1000°C, the high-temperature probe 23 is quickly switched to measure the temperature, so as to achieve the effect of normally monitoring the heating process and the PID curve below 1000°C, so that experiments below 1000°C can be carried out normally in the graphite furnace.
[0025] Example 2
[0026] like Figure 1-Figure 5 As shown, a device for detecting the internal temperature of a graphite furnace includes all the contents of Example 1. In addition, the temperature detection device includes a rotating seat 21. The outer wall of the graphite inner shell 13 is provided with grooves around it. The rotating seat 21 is fixedly installed at the center of both sides of the grooves on the outer wall of the graphite inner shell 13. The tail of the low-temperature probe 22 is fixedly connected to the tail of the high-temperature probe 23. The connection between the low-temperature probe 22 and the high-temperature probe 23 is rotatably installed between the rotating seats 21 on both sides of the grooves of the graphite inner shell 13. The low-temperature probe 22 or the high-temperature probe 23 can be rotated to extend into the inner wall of the graphite inner shell 13.
[0027] In the above embodiment, it should be noted that the rotating seat 21 is a metal rotating seat. By rotating the low-temperature probe 22 and the high-temperature probe 23, the low-temperature probe 22 or the high-temperature probe 23 is extended from the groove of the outer wall of the graphite inner shell 13 into the inner wall of the graphite inner shell 13, so as to achieve the effect of switching the temperature probe 22 and the high-temperature probe 23 by rotation.
[0028] Example 3
[0029] like Figure 1-Figure 5 As shown, a graphite furnace internal temperature detection device includes all the contents of embodiment 2. In addition, the temperature detection device includes a collar 26, the collar 26 is sleeved on the outside of the graphite inner shell 13, the collar 26 is arranged at the groove of the outer wall of the graphite inner shell 13, the collar 26 is provided with a first sliding ring 28 on the side close to the end plate 12, and the collar 26 is provided with a second sliding ring 29 on the side away from the end plate 12. The first sliding ring 28 and the second sliding ring 29 are both slidably installed on the outer wall of the graphite inner shell 13, and a connecting plate 2 is fixedly connected between the collar 26, the first sliding ring 28 and the second sliding ring 29. 7. The side where the first sliding ring 28 and the second sliding ring 29 are close to each other is set as a curved surface. The first sliding ring 28 and the second sliding ring 29 are provided with grooves near the grooves of the graphite inner shell 13. The temperature detection device includes a sliding rod 24. The sliding rod 24 is fixedly installed on both sides of one end of the low-temperature probe 22 close to the rotating seat 21, and on both sides of one end of the high-temperature probe 23 close to the rotating seat 21. A hydraulic push rod 25 is fixedly installed on one side of the end plate 12 close to the inner wall of the outer furnace shell 11. The end of the hydraulic push rod 25 away from the end plate 12 is fixedly connected to the side of the first sliding ring 28 away from the second sliding ring 29.
[0030] In the above embodiment, it should be noted that the slide bar 24 can slide along the curved surface of the first slide ring 28 or the second slide ring 29. The first slide ring 28 is pushed to slide along the outer wall of the graphite inner shell 13 by starting the hydraulic push rod 25, and the sleeve ring 26, the connecting plate 27 and the second slide ring 29 are driven to slide along the outer wall of the graphite inner shell 13. When the first slide ring 28 drives the sleeve ring 26, the connecting plate 27 and the second slide ring 29 to slide toward the side close to the end plate 12, the sleeve ring 26 squeezes the low-temperature probe 22 to rotate with the high-temperature probe 23 and keep it parallel to the outer wall of the graphite inner shell 13. Then one end of the high-temperature probe 23 and the rotating seat 21 extend into the groove of the second slide ring 29, and at the same time, the slide bar 24 slides along the curved surface of the second slide ring 29. The first sliding ring 28 drives the sleeve ring 26, the connecting plate 27 and the second sliding ring 29 to slide to the side away from the end plate 12, the sleeve ring 26 squeezes the high-temperature probe 23 to rotate with the low-temperature probe 22 and keep it parallel to the outer wall of the graphite inner shell 13, and then one end of the low-temperature probe 22 and the rotating seat 21 extend into the slot of the first sliding ring 28, and at the same time, the sliding rod 24 slides along the curved surface of the first sliding ring 28 and drives the low-temperature probe 22 and the high-temperature probe 23 to rotate, so that the high-temperature probe 23 rotates downward and extends into the inner wall of the graphite inner shell 13, so as to achieve the effect of switching the low-temperature probe 22 and the high-temperature probe 23.
[0031] Example 4
[0032] like Figure 1 As shown, a graphite furnace internal temperature detection device includes all the contents of Example 1. In addition, a hatch 14 is rotatably installed at one end of the opening of the outer furnace shell 11, and the hatch 14 can rotate to close the end plate 12. The bottom surface of the outer furnace shell 11 is fixedly installed with a base 15.
[0033] In the above embodiment, it should be noted that a sealing structure is provided between the hatch 14 and the end plate 12 , and the hatch 14 can be connected to the end plate 12 by rotating the hatch 14 to achieve the effect of closing the outer furnace shell 11 and the graphite inner shell 13 .
[0034] The use process of the utility model is as follows: a technician in this field turns and opens the hatch 14 to place the experimental material in the graphite inner shell 13, closes the hatch 14 and heats the inside of the graphite inner shell 13. When the temperature inside the graphite furnace is lower than 1000°C, the hydraulic push rod 25 is started to push the first sliding ring 28 to slide along the outer wall of the graphite inner shell 13, and drives the first sliding ring 28 to drive the sleeve ring 26, the connecting plate 27 and the second sliding ring 29 to slide toward the side close to the end plate 12. The sleeve ring 26 squeezes the low-temperature probe 22 to rotate with the high-temperature probe 23 and keep it parallel to the outer wall of the graphite inner shell 13. Then one end of the high-temperature probe 23 and the rotating seat 21 extend into the slot of the second sliding ring 29. At the same time, the sliding rod 24 slides along the curved surface of the second sliding ring 29 and drives the high-temperature probe 23 and the low-temperature probe 22 to rotate, so that the low-temperature probe 22 rotates downward and extends When the temperature inside the graphite furnace rises to above 1000°C, the hydraulic push rod 25 is started to push the first sliding ring 28 to slide along the outer wall of the graphite inner shell 13, and the first sliding ring 28 drives the sleeve ring 26, the connecting plate 27 and the second sliding ring 29 to slide to the side away from the end plate 12. The sleeve ring 26 squeezes the high-temperature probe 23 to rotate with the low-temperature probe 22 and keep it parallel to the outer wall of the graphite inner shell 13. Then one end of the low-temperature probe 22 and the rotating seat 21 extend into the slot of the first sliding ring 28. At the same time, the sliding rod 24 slides along the curved surface of the first sliding ring 28 and drives the low-temperature probe 22 and the high-temperature probe 23 to rotate, so that the high-temperature probe 23 rotates downward and extends into the inner wall of the graphite inner shell 13. At this point, the switching of the low-temperature probe 22 and the high-temperature probe 23 is completed, and the real-time detection of the temperature inside the graphite inner shell 13 is achieved.
[0035] The above is only a preferred embodiment of the utility model. Any person skilled in the art may modify the utility model by using the above technical solution or modify it into an equivalent technical solution. Therefore, any simple modification or equivalent replacement based on the technical solution of the utility model shall fall within the scope of protection claimed by the utility model.
Claims
1. A graphite furnace internal temperature detection device, comprising an outer furnace shell (11), one end of the outer furnace shell (11) is open, an end plate (12) is fixedly mounted on the inner wall of the open end of the outer furnace shell (11), the end plate (12) is in a circular ring structure, a graphite inner shell (13) is fixedly mounted on the inner wall of the end plate (12), an end of the graphite inner shell (13) away from the end plate (12) extends to the inside of the outer furnace shell (11) and is fixedly connected to an end of the inner wall of the outer furnace shell (11) that is sealed, characterized in that: A temperature detection device is installed between the inner wall of the outer furnace shell (11) and the outer wall of the graphite inner shell (13), wherein the temperature detection device comprises a low-temperature probe (22) and a high-temperature probe (23). The temperature detection device can extend the low-temperature probe (22) or the high-temperature probe (23) into the interior of the graphite inner shell (13) to measure the temperature.
2. A graphite furnace internal temperature detection device according to claim 1, characterized in that: The temperature detection device comprises a rotating seat (21), the outer wall of the graphite inner shell (13) is provided with grooves around its periphery, and the rotating seat (21) is fixedly mounted at the center of both sides of the grooves on the outer wall of the graphite inner shell (13).
3. A graphite furnace internal temperature detection device according to claim 2, characterized in that: The tail of the low-temperature probe (22) is fixedly connected to the tail of the high-temperature probe (23); the connection between the low-temperature probe (22) and the high-temperature probe (23) is rotatably mounted between the rotating seats (21) on both sides of the groove of the graphite inner shell (13); the low-temperature probe (22) or the high-temperature probe (23) can be rotatably extended into the inner wall of the graphite inner shell (13).
4. A graphite furnace internal temperature detection device according to claim 3, characterized in that: The temperature detection device comprises a sleeve (26), the sleeve (26) being sleeved on the outside of the graphite inner shell (13), the sleeve (26) being arranged at a groove on the outer wall of the graphite inner shell (13), a first sliding ring (28) being arranged on a side of the sleeve (26) close to the end plate (12), and a second sliding ring (29) being arranged on a side of the sleeve (26) away from the end plate (12).
5. A graphite furnace internal temperature detection device according to claim 4, characterized in that: The first sliding ring (28) and the second sliding ring (29) are both slidably mounted on the outer wall of the graphite inner shell (13); a connecting plate (27) is fixedly connected between the sleeve ring (26), the first sliding ring (28) and the second sliding ring (29); a side of the first sliding ring (28) and the second sliding ring (29) close to each other is arranged as a curved surface; and the first sliding ring (28) and the second sliding ring (29) are arranged with grooves near the grooves of the graphite inner shell (13).
6. A graphite furnace internal temperature detection device according to claim 5, characterized in that: The temperature detection device comprises a sliding rod (24), and the sliding rod (24) is fixedly mounted on both sides of one end of the low-temperature probe (22) close to the rotating seat (21), and on both sides of one end of the high-temperature probe (23) close to the rotating seat (21).
7. A graphite furnace internal temperature detection device according to claim 6, characterized in that: A hydraulic push rod (25) is fixedly mounted on one side of the end plate (12) close to the inner wall of the outer furnace shell (11), and one end of the hydraulic push rod (25) away from the end plate (12) is fixedly connected to one side of the first sliding ring (28) away from the second sliding ring (29).
8. A graphite furnace internal temperature detection device according to claim 1, characterized in that: A hatch (14) is rotatably mounted on one open end of the outer furnace shell (11), and the hatch (14) can rotatably close the end plate (12). A base (15) is fixedly mounted on the bottom surface of the outer furnace shell (11).