Multi-point temperature measuring structure and high-temperature heating furnace

Abstract

The utility model belongs to the technical field of temperature measuring elements, and relates to a multi-point temperature measuring structure and a high-temperature heating furnace, the multi-point temperature measuring structure comprises an insulating sleeve, a sleeve and a plurality of thermocouple wire assemblies, the end part of the insulating sleeve is provided with a first hole and a plurality of second holes, and the plurality of second holes are distributed around the first hole; each thermocouple wire assembly comprises a positive electrode thermocouple wire and a negative electrode thermocouple wire, all the negative electrode thermocouple wires penetrate through the first holes, and each positive electrode thermocouple wire penetrates through the corresponding second hole; the sleeve is sleeved on the insulation sleeve. According to the multi-point temperature measurement structure, the first hole is formed in the insulation sleeve, the first hole accommodates the cathode thermocouple wires connected with the anode thermocouple wires, the installation is simple, all the cathode thermocouple wires are accommodated in the first hole, and all the cathode thermocouple wires are not insulated from one another, so that the occupied space of the insulation material is reduced, and the temperature in the insulation sleeve with the original size is reduced. Technicians can adopt the thermocouple wire with a larger diameter, so that the service life of the multi-point temperature measurement structure is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of temperature measuring elements, and in particular to a multi-point temperature measuring structure and a high-temperature furnace. Background Art

[0002] When the thermocouple is used to test the temperature at multiple points in a high-temperature furnace, a thermocouple is required for each temperature measurement point. Due to the limited space in the reaction chamber of the high-temperature furnace, multiple thermocouples of different lengths are isolated from the reaction chamber by a quartz tube. The thermocouples are insulated from each other, and a single thermocouple has positive and negative electrode wires, which are insulated from each other.

[0003] Existing thermocouples usually have two fine holes machined in a ceramic tube sleeve, and the positive and negative electrode wires are respectively perforated and connected at the temperature measurement point. However, the structure of the above thermocouple is complex, and the insulating material occupies more space, and the positive and negative electrode wires are often thinner and have a short service life. Utility Model Content

[0004] In view of this, it is necessary to provide a multi-point temperature measurement structure to improve the technical problems of the existing multi-point temperature measurement thermocouples, such as complex structure and short service life.

[0005] The first aspect of the present application provides a multi-point temperature measurement structure, which includes an insulating sleeve, a sleeve and a plurality of dual wire assemblies, wherein a first hole and a plurality of second holes are provided at the end of the insulating sleeve, and the first hole and the plurality of second holes both extend along the axial direction of the insulating sleeve; when observed along the axial direction of the insulating sleeve, the plurality of second holes are distributed around the first hole; each dual wire assembly includes a positive dual wire and a negative dual wire, all negative dual wires are passed through the first hole, and each positive dual wire is passed through a second hole; inside the insulating sleeve, each positive dual wire is welded to the corresponding negative dual wire to form a temperature measurement joint; the sleeve is sleeved on the insulating sleeve.

[0006] In the above-mentioned multi-point temperature measurement structure, a first hole is set in the insulating sleeve, and the first hole accommodates the negative electrode wire connected to multiple positive electrode wires. On the one hand, the technician does not need to repeatedly insert the negative electrode wire, but only needs to insert all the negative electrode wires into the first hole together, which reduces the repetitive operation steps and makes the installation of the negative electrode wire easier; on the other hand, since all the negative electrode wires are accommodated in the first hole and all the negative electrode wires are not insulated, the space occupied by the insulating material is reduced, so that in the insulating sleeve of the original size, the technician can use a wire with a larger diameter, thereby extending the life of the positive and negative electrode wires, and further extending the service life of the multi-point temperature measurement structure.

[0007] In at least one embodiment, a plurality of temperature measuring holes are opened on the peripheral wall of the insulating sleeve, each temperature measuring hole is connected to the first hole and a second hole; at the temperature measuring hole, each positive electrode wire is welded to the corresponding negative electrode wire to form the above-mentioned temperature measuring joint.

[0008] In at least one embodiment, a plurality of temperature measuring holes are spaced apart and distributed along the axis of the insulating sleeve.

[0009] In at least one embodiment, the depths of the plurality of second holes along the axial direction are different, and each temperature measuring hole is connected to the end of one of the second holes.

[0010] In at least one embodiment, the plurality of second holes are distributed in a circular array, and the axis of the first hole is located at the center of the circle.

[0011] In at least one embodiment, the sleeve is provided with an open end and a closed end opposite to each other, the open end is configured to allow the insulating sleeve to be inserted, and the closed end is configured to extend into the interior of the device to be measured.

[0012] In at least one embodiment, the sleeve is provided with a shoulder at the open end, the shoulder being configured to locate with the external joint.

[0013] In at least one embodiment, the insulating sleeve is a tube made of ceramic material.

[0014] In at least one embodiment, the sleeve is a transparent quartz sleeve.

[0015] A second aspect of the present application provides a high-temperature heat furnace, which includes a furnace body and the above-mentioned multi-point temperature measurement structure. The furnace body is provided with a reaction chamber, and the multi-point temperature measurement structure is installed in the reaction chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the cross-sectional structure of a multi-point thermocouple structure provided by an embodiment of the present application cut along the axial direction of the insulating sleeve;

[0017] Figure 2 yes Figure 1 A partial enlarged view of the middle A;

[0018] Figure 3 This is a schematic diagram of the structure of a multi-point thermocouple structure in a decomposed state provided by an embodiment of the present application;

[0019] Figure 4 It is a schematic diagram of the cross-sectional structure of a multi-point thermocouple structure provided by an embodiment of the present application cut along the radial direction of the insulating sleeve;

[0020] Figure 5 It is a structural block diagram of a high-temperature heat furnace provided in one embodiment of the present application.

[0021] Main component symbols

[0022] High temperature furnace 1

[0023] Multi-point temperature measurement structure 100

[0024] Insulation sleeve 10

[0025] First hole 11

[0026] Second hole 12

[0027] Temperature measuring hole 13

[0028] Even wire assembly 20

[0029] Positive electrode wire 21

[0030] Negative electrode wire 22

[0031] Temperature measuring connector 30

[0032] Casing 40

[0033] Open end 41

[0034] Closed end 42

[0035] Shoulder 43

[0036] Furnace 200

[0037] Reaction chamber 210

[0038] The following specific implementation methods will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0039] The following specific embodiments illustrate the implementation of the present application, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Although the description of the present application will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this application are limited to the implementation. On the contrary, the purpose of introducing the application in conjunction with the implementation is to cover other options or modifications that may be extended based on the claims of the present application. In order to provide a deep understanding of the present application, the following description will include many specific details. The present application can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present application, some specific details will be omitted in the description. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0040] Hereinafter, if used, the terms "first", "second", etc. are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the feature. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0041] In this application, if used, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0042] When the following embodiments are described in detail in conjunction with schematic diagrams, for ease of explanation, the diagrams showing the local structures of the devices will not be partially enlarged according to the general scale, and the schematic diagrams are only examples and should not limit the scope of protection of this application.

[0043] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0044] In a first aspect, an embodiment of the present application provides a multi-point temperature measurement structure 100, such as Figure 1 , Figure 2 and Figure 3 As shown, the multi-point temperature measurement structure 100 includes an insulating sleeve 10, a sleeve 40 and a plurality of even-wire assemblies 20. A first hole 11 and a plurality of second holes 12 are provided at the end of the insulating sleeve 10, and the first hole 11 and the plurality of second holes 12 both extend along the axial direction of the insulating sleeve 10. When observed along the axial direction of the insulating sleeve 10, the plurality of second holes 12 are distributed around the first hole 11.

[0045] In one embodiment, each of the dual wire assemblies 20 includes a positive dual wire 21 and a negative dual wire 22, all of the negative dual wires 22 are inserted through the first hole 11, and each of the positive dual wires 21 is inserted through a second hole 12. In other words, all of the negative dual wires 22 are accommodated in the first hole 11, and each of the positive dual wires 21 is accommodated in a second hole 12.

[0046] It should be noted that two adjacent positive electrode pairs 21 in the multiple pairs assemblies 20 are insulated from each other, and each positive electrode pair 21 is insulated from the corresponding negative electrode pair 22 , while all negative electrode pairs 22 in the multiple pairs assemblies 20 are not insulated from each other.

[0047] In one embodiment, if Figure 1 and Figure 2 As shown, the portion of each positive electrode wire 21 located in the first hole 11 is welded to the portion of the corresponding negative electrode wire 22 located in the second hole 12 to form a temperature measuring joint 30, which is used to measure the ambient temperature.

[0048] It should be noted that the positive electrode wire 21 and the negative electrode wire 22 in each wire assembly 20 are welded to each other to form a temperature measuring joint 30, and multiple wire assemblies 20 form multiple independent temperature measuring joints 30. In this way, the temperature measuring thermocouple structure can measure the temperature of multiple positions at the same time.

[0049] In one embodiment, the sleeve 40 is sleeved on the insulating sleeve 10 to protect the even-wire assembly 20 and the insulating sleeve 10 to provide a stable temperature measurement environment and reduce the interference of the external environment on the multi-point temperature measurement structure 100 .

[0050] In summary, compared with the traditional thermocouple in which the positive electrode wire 21 and the negative electrode wire 22 are respectively perforated and the positive electrode wire 21 and the negative electrode wire 22 are strictly insulated, the multi-point temperature measurement structure 100 in the present application is provided with a first hole 11 in the insulating sleeve 10, and the first hole 11 accommodates the negative electrode wire 22 connected to the plurality of positive electrode wires 21. On the one hand, the technician does not need to repeatedly insert the negative electrode wire 22, but only needs to insert all the negative electrode wires 22 together in the first hole 11, which reduces the repetitive operation steps and makes the installation of the negative electrode wire 22 easier.

[0051] On the other hand, since all the negative electrode wires 22 are accommodated in the first hole 11 and all the negative electrode wires 22 are not insulated, the space occupied by the insulating material is reduced, so that technicians can use wires with larger diameters in the insulating sleeve 10 of the original size, thereby extending the life of the positive electrode wire 21 and the negative electrode wire 22, and further extending the service life of the multi-point temperature measurement structure 100.

[0052] In one embodiment, if Figure 2 and Figure 3 As shown, the peripheral wall of the insulating sleeve 10 is provided with a plurality of temperature measuring holes 13, each of which is connected to the first hole 11 and a second hole 12. At the temperature measuring holes 13, each positive electrode wire 21 is welded to the corresponding negative electrode wire 22 to form the above-mentioned temperature measuring joint 30.

[0053] By setting up multiple temperature measuring holes 13, not only can the current transmission between the positive electrode wire 21 and the negative electrode wire 22 be ensured so that the multi-point temperature measurement structure 100 can measure the ambient temperature, but the multi-point temperature measurement structure 100 can also obtain temperature information of multiple positions at the same time to achieve multi-point temperature measurement.

[0054] In one embodiment, the temperature measuring joint 30 is exposed to the temperature measuring hole 13 to improve the sensitivity of the temperature measuring joint 30 to the temperature change of each temperature measuring point, thereby improving the accuracy of temperature measurement of the multi-point temperature measuring structure 100.

[0055] In one embodiment, a plurality of temperature measuring holes 13 are distributed at intervals along the axial direction of the insulating sleeve 10. This can, on the one hand, enable the multi-point temperature measuring structure 100 to measure the temperature at different positions in the axial direction of the insulating sleeve 10, thereby expanding the temperature measurement range; and on the other hand, it can reduce the mutual interference between two adjacent temperature measuring holes 13, making the temperature measurement results more reliable and stable.

[0056] In one embodiment, the depths of the plurality of second holes 12 along the axial direction are different, and each temperature measuring hole 13 is connected to the end of a second hole 12. Specifically, all the second holes 12 are blind holes, and the depths of the plurality of blind holes are different, and each temperature measuring hole 13 is connected to the closed end of a blind hole.

[0057] Thus, technicians can set the temperature measurement points at different positions by adjusting the depth of each second hole 12, so as to measure the temperature at different positions. For example, by setting a deeper second hole 12, the temperature at a deeper position inside the device to be measured can be measured.

[0058] It should also be noted that, compared with the through hole, the blind hole, the portion of the insulating sleeve 10 that is not penetrated, can provide additional support, thereby improving the strength and rigidity of the insulating sleeve 10 and reducing the risk of breakage or damage of the insulating sleeve 10.

[0059] In other embodiments, the second hole 12 may also be configured as a through hole, which is not limited in the present application and those skilled in the art may select according to actual conditions.

[0060] In one embodiment, if Figure 3 and Figure 4 As shown, the plurality of second holes 12 are distributed in a circular array, and the axis of the first hole 11 is located at the center of the circle. In other words, the plurality of second holes 12 are distributed in a circular array with the axis of the first hole 11 as the center. By distributing the plurality of second holes 12 in a circular array, the plurality of temperature measuring joints 30 can be evenly distributed in space, covering a wider range, thereby realizing the multi-point temperature measurement structure 100 to measure the internal temperature of the temperature measurement device (not shown) in an all-round manner.

[0061] In other embodiments, the second holes 12 may also be arranged in other ways such as a rectangular array, which is not limited in the present application and those skilled in the art may choose according to actual conditions.

[0062] In one embodiment, if Figure 1 and Figure 3 As shown, the sleeve 40 is provided with an open end 41 and a closed end 42 opposite to each other. The open end 41 is configured to allow the insulating sleeve 10 to be inserted, and the closed end 42 is configured to extend into the interior of the device to be measured. It can be understood that when assembling the multi-point temperature measurement structure 100, the technician needs to insert the insulating sleeve 10 with multiple even wire assemblies 20 into the interior of the sleeve 40 along the open end 41 of the sleeve 40. When measuring the device to be measured, the technician only needs to extend the closed end 42 of the sleeve 40 into the interior of the device to be measured.

[0063] It should be noted that, through the setting of the closed end 42, not only can the temperature measuring part of the thermocouple completely enter the interior of the temperature measurement device to obtain more accurate temperature measurement, but also the special gas inside the temperature measurement device can be isolated from the thermocouple inside the sleeve 40, thereby reducing the influence of the external environment and improving the stability and accuracy of the temperature measurement.

[0064] In one embodiment, the sleeve 40 is provided with a shoulder 43 at the open end 41, and the shoulder 43 is configured to be positioned with an external connector (not shown) to ensure the correct alignment and connection between the sleeve 40 and the external connector. Specifically, the shoulder 43 is a raised portion of the open end 41 of the sleeve 40, and the shape of the raised portion can be round or square.

[0065] It should be noted that, by setting the shoulder 43, on the one hand, it can provide a fixed position so that the external connector can be accurately inserted and positioned in the open end 41 of the sleeve 40; on the other hand, it can provide additional mechanical support and protection, enhance the structural stability of the sleeve 40, and reduce the risk of unnecessary movement and swinging of the sleeve 40 during the insertion and removal process, thereby improving the temperature measurement stability of the multi-point temperature measurement structure 100.

[0066] In one embodiment, the insulating sleeve 10 is a pipe made of ceramic material. It should be noted that, on the one hand, the ceramic material has good insulation performance, can effectively isolate the electrical contact between the thermocouple and the external environment, reduce current leakage and interference, and improve the purity and accuracy of the temperature measurement signal. On the other hand, the ceramic material has excellent high temperature resistance, can withstand thermal stress and thermal shock in a high temperature environment, and maintain the stability and integrity of the structure.

[0067] In one embodiment, the sleeve 40 is a transparent quartz sleeve 40. It should be noted that the transparent quartz tube is not only resistant to high temperatures and can withstand high temperatures, but also has low thermal conductivity, which can reduce the conduction and diffusion of heat, thereby improving the accuracy and sensitivity of temperature measurement. In addition, the transparent quartz tube also has a low thermal expansion coefficient, which can reduce stress and deformation caused by temperature changes.

[0068] In other embodiments, the insulating sleeve 10 and the sleeve 40 may also be made of other suitable materials, which is not limited in the present application, and those skilled in the art may choose according to actual conditions.

[0069] A second aspect of the present application provides a high temperature furnace 1, such as Figure 5 As shown, the high temperature furnace 1 includes a furnace body 200 and the above-mentioned multi-point temperature measurement structure 100 . The furnace body 200 is provided with a reaction chamber 210 , and the multi-point temperature measurement structure 100 is installed in the reaction chamber 210 .

[0070] Compared with the traditional thermocouple in which the positive electrode wire 21 and the negative electrode wire 22 are respectively perforated and strictly insulated from each other, the multi-point temperature measurement structure 100 is provided with a first hole 11 in the insulating sleeve 10, and the first hole 11 accommodates the negative electrode wire 22 connected to the plurality of positive electrode wires 21. On the one hand, the technician does not need to repeatedly insert the negative electrode wire 22, but only needs to insert all the negative electrode wires 22 into the first hole 11 together, which reduces the repetitive operation steps and makes the installation of the negative electrode wire 22 easier.

[0071] On the other hand, since all the negative electrode wires 22 are accommodated in the first hole 11 and all the negative electrode wires 22 are not insulated, the space occupied by the insulating material is reduced, so that technicians can use wires with larger diameters in the insulating sleeve 10 of the original size, thereby extending the life of the positive electrode wire 21 and the negative electrode wire 22, and further extending the service life of the high-temperature furnace 1.

[0072] The above description is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present application should be included in the disclosure scope of the present application.

Claims

1. A multi-point temperature measurement structure, characterized in that: The multi-point temperature measurement structure comprises: An insulating sleeve, wherein a first hole and a plurality of second holes are provided at an end of the insulating sleeve, wherein the first hole and the plurality of second holes both extend along the axial direction of the insulating sleeve; when viewed along the axial direction of the insulating sleeve, the plurality of second holes are distributed around the first hole; A plurality of even-wire assemblies, each of which includes a positive even-wire and a negative even-wire, all of the negative even-wires are inserted through the first holes, and each of the positive even-wires is inserted through one of the second holes; each of the positive even-wires is welded to the corresponding negative even-wire in the insulating sleeve to form a temperature measuring joint; A sleeve is sleeved on the insulating sleeve.

2. The multi-point temperature measurement structure according to claim 1, characterized in that: A plurality of temperature measuring holes are provided on the peripheral wall of the insulating sleeve, each of which is connected to the first hole and one of the second holes; at the temperature measuring holes, each of the positive electrode wires is welded to the corresponding negative electrode wire to form the temperature measuring joint.

3. The multi-point temperature measurement structure according to claim 2, characterized in that: The plurality of temperature measuring holes are distributed at intervals along the axis of the insulating sleeve.

4. The multi-point temperature measurement structure according to claim 3, characterized in that: The depths of the plurality of second holes along the axial direction are different, and each of the temperature measuring holes is connected to an end of one of the second holes.

5. The multi-point temperature measurement structure according to claim 4, characterized in that: The plurality of second holes are distributed in a circular array, and the axis of the first hole is located at the center of the circle.

6. The multi-point temperature measurement structure according to any one of claims 1 to 5, characterized in that: The sleeve is provided with an open end and a closed end opposite to each other, the open end is configured to allow the insulating sleeve to be inserted, and the closed end is configured to extend into the interior of the device to be measured.

7. The multi-point temperature measurement structure according to claim 6, characterized in that: The sleeve is provided with a shoulder at the open end, and the shoulder is configured to be positioned with an external joint.

8. The multi-point temperature measurement structure according to claim 1, characterized in that: The insulating sleeve is a pipe made of ceramic material.

9. The multi-point temperature measurement structure according to claim 1, characterized in that: The sleeve is a transparent quartz sleeve.

10. A high temperature furnace, characterized in that: The high-temperature heat furnace comprises a furnace body and the multi-point temperature measurement structure according to any one of claims 1 to 9, the furnace body is provided with a reaction chamber, and the multi-point temperature measurement structure is installed in the reaction chamber.

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