Thermocouple and vacuum tempering furnace

Abstract

The utility model relates to the technical field of thermocouples, in particular to a thermocouple and a vacuum tempering furnace, and the thermocouple comprises a temperature measuring section and a fixed section, the temperature measuring section is provided with a measuring end and a connecting end which are opposite, the connecting end of the temperature measuring section is connected with one end of the fixed section, the temperature measuring section can rotate around the joint of the connecting end and the fixed section, a reference surface is formed at one end, connected with the connecting end, of the fixed section, and the measuring end of the temperature measuring section can rotate around the joint of the connecting end and the fixed section on one side of the reference surface; therefore, the position of the measuring end is adjusted. According to the thermocouple provided by the utility model, the temperature measurement range of the measurement end can be improved, so that the overall applicability of the thermocouple is improved. Meanwhile, the vacuum tempering furnace provided by the utility model adopts the thermocouple, and the temperature measuring range of the thermocouple is effectively improved, so that the temperature of each position in the vacuum tempering furnace can be controlled more easily, and the use reliability is improved conveniently.

Description

Technical Field

[0001] This utility model relates to the field of thermocouple technology, specifically to a thermocouple and a vacuum tempering furnace. Background Technology

[0002] A thermocouple is a temperature sensor based on the thermoelectric effect, widely used in temperature measurement in industrial, laboratory, and household appliances.

[0003] Currently, most thermocouples used in vacuum tempering furnaces on the market are made of rigid metal tubes of equal diameter. Thermocouples have a measuring end and a reference end. Because thermocouples are made of rigid metal tubes, the measuring end of the thermocouple cannot be adjusted in position and can only measure in one direction. This means that the measuring end can only measure temperature in one fixed direction, resulting in a very limited temperature measurement range. Utility Model Content

[0004] (I) This utility model provides a thermocouple that alleviates the technical problem of limited temperature measurement range of the measuring end of the thermocouple in the prior art.

[0005] (II) Technical Solution

[0006] To solve the above-mentioned technical problems, embodiments of this utility model provide a thermocouple, including a temperature measuring section and a fixing section;

[0007] The temperature measuring segment has a measuring end and a connecting end. The connecting end of the temperature measuring segment is connected to one end of the fixed segment. The temperature measuring segment can rotate around the connection point between the connecting end and the fixed segment. The end of the fixed segment connected to the connecting end forms a reference surface. The measuring end of the temperature measuring segment can rotate around the connection point between the connecting end and the fixed segment on one side of the reference surface to adjust the position of the measuring end.

[0008] Furthermore, the temperature measuring section is a flexible alloy hose, and the fixing section is a rigid metal tube.

[0009] Furthermore, the diameter of the temperature measuring section is smaller than the diameter of the fixed section.

[0010] Furthermore, the connecting end of the temperature measuring section is welded to one end of the fixed section.

[0011] Furthermore, a connecting seat is provided at the connection point between the temperature measuring section and the fixed section. The fixed section is fixed on one side of the connecting seat, and the temperature measuring section is fixed on the other side.

[0012] Furthermore, the length of the temperature measuring section is less than the length of the fixed section.

[0013] Furthermore, the thermocouple also includes a temperature measuring point and a thermocouple wire. The temperature measuring point is located at the measuring end, and the thermocouple wire is located inside the fixed section and the temperature measuring section, and is arranged along the extension direction of the fixed section and the temperature measuring section to the temperature measuring point.

[0014] Furthermore, an integrated temperature gauge 3 is provided at the end of the fixed section away from the temperature measuring section.

[0015] Furthermore, the integrated temperature gauge 3 is connected to the temperature measurement point signal.

[0016] An embodiment of this utility model also provides a vacuum tempering furnace, including a furnace chamber, a furnace door, and the aforementioned thermocouple;

[0017] The furnace chamber has an opening, the furnace door covers the opening, and the side wall of the furnace chamber is also provided with a measuring port. The thermocouple passes through the measuring port and extends into the furnace chamber to measure the temperature.

[0018] The beneficial effects of this utility model are:

[0019] This utility model provides a thermocouple comprising a temperature measuring section and a fixed section. The temperature measuring section has a measuring end and a connecting end, with the connecting end connected to one end of the fixed section. This allows the temperature measuring section to be inserted into the furnace for temperature monitoring during use. Since the connecting end and the fixed section form a reference plane, the measuring end can rotate around the connection point between the connecting end and the fixed section on one side of the reference plane. This allows the position of the measuring end to be adjusted and changed. Specifically, before inserting the measuring end of the temperature measuring section into the furnace, the measuring end can be adjusted and changed within a certain range. After adjusting to the appropriate position, it is inserted into the furnace for temperature monitoring, thereby increasing the temperature measuring range of the measuring end within the furnace and enhancing the overall applicability of the thermocouple.

[0020] This utility model also provides a vacuum tempering furnace, including a furnace chamber, a furnace door, and the aforementioned thermocouple. By setting a measuring port on the side wall of the furnace chamber, the thermocouple is adjusted to the required measuring section and then inserted into the furnace chamber through the measuring port and fixed, so as to monitor the temperature at the corresponding position in the furnace chamber. Due to the use of the aforementioned thermocouple, the temperature measuring range of the thermocouple is effectively improved, making it easier to control the temperature at various positions in the vacuum tempering furnace, thereby improving the reliability of use and ensuring the stability of the tempering process used in the vacuum tempering furnace. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 A schematic diagram of the overall structure of a thermocouple provided for an embodiment of the utility model;

[0023] Figure 2 A schematic diagram of temperature measurement section adjustment of a thermocouple is provided for an embodiment of the utility model.

[0024] icon:

[0025] 100 - Temperature measuring section; 101 - Fixed section; 102 - Temperature measuring point;

[0026] 200 - Integrated Temperature Gauge. Detailed Implementation

[0027] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] In the description of this utility model, it should be noted that the terms "upper" and "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0030] like Figures 1 to 2 As shown, this utility model provides a thermocouple, including a temperature measuring section 100 and a fixed section 101;

[0031] The temperature measuring section 100 has a measuring end and a connecting end. The connecting end of the temperature measuring section 100 is connected to one end of the fixed section 101. The temperature measuring section 100 can rotate around the connection between the connecting end and the fixed section 101. The end of the fixed section 101 connected to the connecting end forms a reference surface. The measuring end of the temperature measuring section 100 can rotate around the connection between the connecting end and the fixed section 101 on one side of the reference surface to adjust the position of the measuring end.

[0032] In this embodiment, the thermocouple includes a temperature measuring section 100 and a fixed section 101. The temperature measuring section 100 has a measuring end and a connecting end, and the connecting end is connected to one end of the fixed section 101. This allows the temperature measuring section 100 to be inserted into the furnace for temperature monitoring during use. Since the connecting end and the fixed section 101 are connected to form a reference surface, the measuring end can rotate around the connection between the connecting end and the fixed section on one side of the reference surface. This allows the position of the measuring end to be adjusted and changed. That is, before the measuring end of the temperature measuring section 100 is inserted into the furnace, the measuring end can be adjusted and changed within a certain range. After being adjusted to the appropriate position, it is inserted into the furnace for temperature monitoring, thereby increasing the temperature measuring range of the measuring end in the furnace and achieving the effect of increasing the overall applicability of the thermocouple.

[0033] According to one embodiment provided by this utility model, such as Figure 1 and Figure 2 As shown, the temperature measuring section 100 is a flexible alloy hose, and the fixing section 101 is a rigid metal tube.

[0034] In this embodiment, the temperature measuring section 100 is made of a flexible alloy hose, such as a copper alloy hose, and the fixing section 101 is made of a rigid metal tube, such as a stainless steel rigid tube.

[0035] By combining the alloy flexible tube with the end of the metal rigid tube, the alloy flexible tube has a certain degree of plasticity, which can ensure that the end position of the alloy flexible tube (i.e., the temperature measuring section 100) away from the metal rigid tube (i.e., the fixed section 101) can be freely adjusted and changed, and the adjusted position can be kept unchanged. This allows the end of the temperature measuring section 100 to change position within a certain range, making the temperature measuring range of the temperature measuring section 100 wider and also having good stability.

[0036] Of course, the thermocouple provided in this embodiment is mainly used in vacuum tempering furnaces. The temperature of vacuum tempering furnaces is generally between 300-800℃. Therefore, there is no need to consider the influence of the furnace temperature on the position of the alloy hose.

[0037] According to one embodiment provided by this utility model, such as Figure 1 and Figure 2 As shown, the diameter of the temperature measuring section 100 is smaller than the diameter of the fixed section 101.

[0038] In this embodiment, in order to ensure the stability of the temperature measuring section 100 adjustment, the diameter of the temperature measuring section 100 is set to be smaller than the diameter of the fixed section 101, thereby ensuring that the temperature measuring section 100 can remain stable after adjustment when it extends into the furnace, and avoiding the situation where the temperature measurement result is not stable due to deviation during the temperature measurement process.

[0039] Optionally, taking the 8mm diameter rigid metal tube currently used to manufacture thermocouples as an example, in order to ensure the stability of the temperature measuring section 100 and the fixed section 101 after adjustment, the diameter of the temperature measuring section 100 can be set in the range of 2.5-3.5mm. Of course, preferably, the temperature measuring section 100 is made of a flexible alloy tube with a diameter of 3mm.

[0040] The diameter of the temperature measuring section 100 can also be 2.5mm, 2.8mm, 3.1mm or other sizes in the range of 2.5-3.5mm. As long as the design concept of this utility model is not deviated from, it should be within the protection scope of this utility model.

[0041] According to one embodiment provided by this utility model, such as Figure 1 and Figure 2 As shown, the connecting end of the temperature measuring section 100 is welded to one end of the fixed section 101.

[0042] In this embodiment, the ends of the temperature measuring section 100 and the fixed section 101 can be fixed by welding, so that the relative position of the temperature measuring section 100 and the fixed section 101 can be adjusted before the thermocouple is inserted into the furnace, thereby increasing the temperature measuring range of the temperature measuring section 100. The welding process used is existing technology and will not be described in detail.

[0043] According to one embodiment of the present invention, a connecting seat is provided at the connection point between the connecting end of the temperature measuring section 100 and the fixed section 101. The fixed section 101 is fixed on one side of the connecting seat, and the temperature measuring section 100 is fixed on the other side.

[0044] In this embodiment, in addition to the above-mentioned method of directly fixing the ends of the temperature measuring section 100 and the fixed section 101 by welding, a connecting seat can also be provided at the connection point between the connecting end of the temperature measuring section 100 and the fixed section 101. One side of the connecting seat is fixed to the fixed section 101, which can be fixed by welding or directly integrally cast. The other end of the connecting seat is fixed to the temperature measuring section 100 by welding, so as to fix the temperature measuring section 100 and the fixed section 101 in a fixed connection.

[0045] According to one embodiment provided by this utility model, such as Figure 1 and Figure 2 As shown, the length of the temperature measuring section 100 is less than the length of the fixed section 101.

[0046] In this embodiment, in order to further ensure the stability of the temperature measuring section 100 adjustment, the length of the temperature measuring section 100 is set to be less than the length of the fixed section 101, so as to ensure that the temperature measuring section 100 can remain stable after adjustment when it extends into the furnace. This can avoid the situation where the temperature measuring result is not stable due to the excessive length of the temperature measuring section 100 during the temperature measurement process.

[0047] Optionally, taking the 8mm diameter rigid metal tube currently used to manufacture thermocouples as an example, when the length of the fixed section 101 is set to 350mm, the length of the temperature measuring section 100 can be set in the range of 120-180mm. Preferably, the temperature measuring section 100 is made of a flexible alloy tube with a length of 150mm.

[0048] The length of the temperature measuring section 100 can also be 120mm, 140mm, 160mm or other dimensions within the range of 120-180mm. As long as the design concept of this utility model is not deviated from, it should fall within the protection scope of this utility model.

[0049] According to one embodiment provided by this utility model, such as Figure 1 and Figure 2 As shown, the thermocouple also includes a temperature measuring point 102 and a thermocouple wire. The temperature measuring point 102 is located at the measuring end, and the thermocouple wire is located inside the fixed section 101 and the temperature measuring section 100, and is arranged along the extension direction of the fixed section 101 and the temperature measuring section 100 to the temperature measuring point 102.

[0050] In this embodiment, a temperature measuring point 102 is provided at the measuring end. Before the thermocouple is inserted into the furnace, the position of the temperature measuring point 102 can be changed by adjusting the position of the temperature measuring section 100 to increase the temperature measuring range of the temperature measuring point 102. At the same time, thermocouple wires are provided inside the fixed section 101 and the temperature measuring section 100. The thermocouple wires are laid out to the temperature measuring point 102 in one go along the extension direction of the fixed section 101 and the temperature measuring section 100, so that the temperature measuring point 102 can measure the temperature and generate a signal for transmission. Since the diameter and length of the temperature measuring section 100 are smaller than the diameter and length of the fixed section 101, the temperature transfer efficiency of the temperature measuring section 100 can also be improved, further improving the temperature measured by the thermocouple temperature measuring point 102 to be closer to the actual temperature inside the furnace when displayed.

[0051] According to one embodiment provided by this utility model, such as Figure 1 and Figure 2 As shown, an integrated temperature gauge 200 is provided at the end of the fixed section 101 that is away from the temperature measuring section 100.

[0052] In this embodiment, in order to facilitate direct observation of the temperature value measured by the thermocouple provided in this embodiment, an integrated temperature meter 200 is also provided at the end of the fixed section 101 away from the temperature measuring section 100, so that the digital temperature can be directly output.

[0053] According to one embodiment provided by this utility model, such as Figure 1 and Figure 2 As shown, the integrated temperature gauge 200 is connected to the temperature measuring point 102 via signal connection.

[0054] In this embodiment, the integrated temperature gauge 200 and the temperature measuring point 102 at the end of the temperature measuring section 100 are connected by a temperature measuring circuit signal. The thermocouple provided in this embodiment measures the temperature inside the furnace through the temperature measuring point 102 and generates a temperature signal that is transmitted to the integrated temperature gauge 200, thereby directly generating temperature data.

[0055] Of course, the integrated temperature gauge 200 and the temperature measuring point 102 of the thermocouple are integrated through a miniature temperature measuring circuit. Since this part is existing technology, it will not be described in detail.

[0056] This utility model also provides a vacuum tempering furnace, including a furnace chamber, a furnace door, and the aforementioned thermocouple;

[0057] The furnace chamber has an opening, and the furnace door is closed to the opening. The side wall of the furnace chamber is also equipped with a measuring port, through which a thermocouple is inserted into the furnace chamber to measure the temperature.

[0058] In this embodiment, the vacuum tempering furnace includes a furnace chamber, a furnace door, and the aforementioned thermocouple. By setting a measuring port on the side wall of the furnace chamber, the thermocouple is adjusted to the required measuring section and then inserted into the furnace chamber through the measuring port and fixed in place, so as to monitor the temperature at the corresponding position in the furnace chamber. Due to the use of the aforementioned thermocouple, the temperature measuring range of the thermocouple is effectively improved, making it easier to control the temperature at various positions inside the vacuum tempering furnace, thereby improving the reliability of use and ensuring the stability of the tempering process used in the vacuum tempering furnace.

[0059] Of course, preferably, a vacuum flange is provided in the area where the thermocouple is located outside the furnace. The thermocouple is fixed to the measuring port by using the vacuum flange to ensure the stability of the temperature measurement process.

[0060] Optionally, to prevent the thermocouples from deteriorating due to frequent high temperatures and cooling in the vacuum tempering furnace, it is necessary to calibrate or replace the thermocouples.

[0061] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A thermocouple, characterized in that, It includes a temperature measuring section (100) and a fixed section (101); The temperature measuring section (100) has a measuring end and a connecting end. The connecting end of the temperature measuring section (100) is connected to one end of the fixed section (101). The temperature measuring section (100) can rotate around the connection between the connecting end and the fixed section (101). The end of the fixed section (101) connected to the connecting end forms a reference surface. The measuring end of the temperature measuring section (100) can rotate around the connection between the connecting end and the fixed section (101) on one side of the reference surface to adjust the position of the measuring end.

2. The thermocouple according to claim 1, characterized in that, The temperature measuring section (100) is a flexible alloy hose, and the fixing section (101) is a rigid metal tube.

3. The thermocouple according to claim 1, characterized in that, The diameter of the temperature measuring section (100) is smaller than the diameter of the fixed section (101).

4. The thermocouple according to any one of claims 1 to 3, characterized in that, The connecting end of the temperature measuring section (100) is welded to one end of the fixed section (101).

5. The thermocouple according to any one of claims 1 to 3, characterized in that, A connecting seat is provided at the connection point between the connecting end of the temperature measuring section (100) and the fixed section (101). The fixed section (101) is fixed on one side of the connecting seat, and the temperature measuring section (100) is fixed on the other side.

6. The thermocouple according to claim 2, characterized in that, The length of the temperature measuring section (100) is less than the length of the fixed section (101).

7. The thermocouple according to claim 1, characterized in that, The thermocouple also includes a temperature measuring point (102) and a thermocouple wire. The temperature measuring point (102) is located at the measuring end, and the thermocouple wire is located inside the fixed section (101) and the temperature measuring section (100), and is arranged along the extension direction of the fixed section (101) and the temperature measuring section (100) to the temperature measuring point (102).

8. The thermocouple according to claim 7, characterized in that, An integrated temperature gauge (200) is provided at the end of the fixed section (101) away from the temperature measuring section (100).

9. The thermocouple according to claim 8, characterized in that, The integrated temperature gauge (200) is signal-connected to the temperature measuring point (102).

10. A vacuum tempering furnace, characterized in that, Includes a furnace chamber, a furnace door, and a thermocouple as described in any one of claims 1-9; The furnace chamber has an opening, the furnace door covers the opening, and the side wall of the furnace chamber is also provided with a measuring port. The thermocouple passes through the measuring port and extends into the furnace chamber to measure the temperature.

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