System for monitoring temperature of steel material in heating furnace

Abstract

A system for monitoring the temperature of a steel material in a heating furnace belongs to the technical field of metal material heat treatment related equipment, and comprises a test part arranged on the outer side surface of the steel material and in heat transfer contact with the steel material, and a galvanic couple is arranged in the test part; the recorder is connected with the galvanic couple; the testing part is made of a high-temperature-resistant material, and the temperature of the testing part is consistent with that of the steel material. The test component and the steel material are heated together, and meanwhile, the test component and the steel material are attached together to form a heat transfer connection relation with the steel material, so that the temperature of the steel material and the temperature of the test component are kept consistent, and the accurate temperature of the steel material can be obtained by obtaining the temperature of the test component. The device has the advantages that the monitored steel material is not damaged, the cost is lower, and the device can stably run for a long time. The device has already been put into practical application and is implemented for multiple times in the production of hot high-temperature alloy and high-strength steel materials, the monitoring process is stable, the heated material is not damaged, and the monitoring cost is lower.

Description

Technical Field

[0001] The utility model relates to the technical field of equipment for heat treatment of metal materials, and more specifically, to a system for monitoring the temperature of steel materials in a heating furnace. Background Art

[0002] When steel materials are heated in a heating furnace, generally, only the thermocouples installed on the furnace wall, furnace top and other parts of the heating furnace can be used to detect the temperature inside the furnace, and the actual temperature of the steel materials cannot be monitored. For materials with a narrow heating temperature range, such as the superalloy GH4169, only the detection of the local temperature inside the heating furnace cannot represent the actual temperature of the heated materials, which has a certain negative impact on the product quality of the heated materials. Summary of the Utility Model

[0003] (1) Technical Problem:

[0004] In summary, how to obtain the actual temperature of the heated materials without damaging the heated materials has become an urgent problem to be solved by those skilled in the art.

[0005] (2) Technical Solution:

[0006] In order to achieve the above object, the utility model provides the following technical solution:

[0007] The utility model provides a system for monitoring the temperature of steel materials in a heating furnace. In the utility model, the system for monitoring the temperature of steel materials in a heating furnace includes:

[0008] A test component for being arranged on the outer side surface of the steel material and in heat transfer contact with the steel material, and the test component has an accommodation space;

[0009] A thermocouple that can be assembled into the accommodation space for real-time temperature monitoring;

[0010] A recorder connected to the thermocouple for recording real-time temperature monitoring information;

[0011] Wherein, the test component is made of high-temperature resistant materials, and in the heating furnace, the temperature of the test component is consistent with the temperature of the steel material.

[0012] Preferably, in the system for monitoring the temperature of steel materials in a heating furnace provided by the utility model, the manufacturing material of the test component is the same as that of the steel material.

[0013] Preferably, in the system for monitoring the temperature of steel materials in a heating furnace provided by the utility model, the test component is a heat-resistant steel pipe.

[0014] Preferably, in the system for monitoring the temperature of steel materials in a heating furnace provided by the utility model, the axis of the test component is parallel to the axis of the steel material.

[0015] Preferably, in the system for monitoring the temperature of the steel material in the heating furnace provided by the present utility model, the thermocouple is arranged at the head end of the thermocouple of the part inside the test part, and the head end of the thermocouple is coaxially arranged with the test part.

[0016] Preferably, in the system for monitoring the temperature of the steel material in the heating furnace provided by the present utility model, the front end of the test part is closed, the rear end of the test part is provided with an opening for loading the thermocouple, and heat insulation material is arranged at the rear end of the test part.

[0017] Preferably, in the system for monitoring the temperature of the steel material in the heating furnace provided by the present utility model, the front end of the test part is a flat opening and is closed by welding.

[0018] Preferably, in the system for monitoring the temperature of the steel material in the heating furnace provided by the present utility model, the recorder is a paperless recorder.

[0019] Preferably, in the system for monitoring the temperature of the steel material in the heating furnace provided by the present utility model, one thermocouple and one test part form a test unit, and a plurality of test units form a test group for monitoring the temperature of one steel material.

[0020] Preferably, in the system for monitoring the temperature of the steel material in the heating furnace provided by the present utility model, a plurality of the test groups are provided for simultaneously monitoring the temperatures of a plurality of steel materials.

[0021] (III) Beneficial effects:

[0022] The present utility model provides a system for monitoring the temperature of the steel material in the heating furnace. In the present utility model, the system for monitoring the temperature of the steel material in the heating furnace includes: a test part for being arranged on the outer side surface of the steel material in heat transfer contact with the steel material, the test part having an accommodation space; a thermocouple that can be assembled into the accommodation space for performing real-time temperature monitoring; a recorder connected to the thermocouple for recording real-time temperature monitoring information; wherein, the test part is made of a high-temperature resistant material, and in the heating furnace, the temperature of the test part is consistent with the temperature of the steel material.

[0023] The utility model uniquely additionally provides a test component, which is closely attached to the steel material and heated together with the steel material. During the heating process, the test component and the steel material are heated and raised in temperature simultaneously. At the same time, the test component and the steel material are attached together to form a heat transfer connection relationship with the steel material. In this way, the temperature of the steel material is consistent with the temperature of the test component. By obtaining the temperature of the test component, the accurate temperature of the steel material can be obtained. The advantages of the utility model are that it does not damage the monitored steel material, has a low cost, and can operate stably for a long time. The utility model has been put into practical application and has been implemented multiple times in the production of hot high-temperature alloys and high-strength steel materials. Its monitoring process is stable, does not damage the heated material, and has a low monitoring cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings forming a part of this application are used to provide a further understanding of the utility model. The schematic embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an improper limitation to the utility model. Among them:

[0025] Figure 1 It is a schematic structural diagram of a system for monitoring the temperature of steel materials in a heating furnace in an embodiment of the utility model;

[0026] Figure 2 It is a practical photo of the thermocouple used in an embodiment of the utility model;

[0027] Figure 3 It is a practical photo of the test component used in an embodiment of the utility model;

[0028] Figure 4 It is a practical photo of the paperless recorder used in an embodiment of the utility model;

[0029] Figure 5 It is a practical photo of the test component fixed to the steel material in an embodiment of the utility model;

[0030] Figure 6 It is a practical photo of multiple steel materials in a heating furnace in an embodiment of the utility model.

[0031] In Figure 1 the corresponding relationship between the component names and the reference numerals of the drawings is as follows:

[0032] Steel material 1, test component 2, thermocouple 3, heat-resistant steel wire 4, high-temperature heat-insulating material 5,

[0033] Paperless recorder 6. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] The present utility model will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. Each example is provided by way of explanation of the present utility model rather than a limitation thereof. In fact, those skilled in the art will appreciate that modifications and variations can be made to the present utility model without departing from the scope or spirit thereof. For example, features shown or described as part of one embodiment can be used in another embodiment to yield yet another embodiment. Accordingly, it is desirable that the present utility model encompass such modifications and variations that fall within the scope of the appended claims and their equivalents.

[0035] In the description of the present utility model, the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model rather than requiring the present utility model to be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present utility model. The terms "connected" and "coupled" used in the present utility model should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be directly connected or indirectly connected through an intermediate component. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0036] Please refer to Figures 1 to 6 , wherein, Figure 1 is a schematic structural diagram of a system for monitoring the temperature of steel materials in a heating furnace in an embodiment of the present utility model; Figure 2 is a practical photo of the thermocouple used in an embodiment of the present utility model; Figure 3 is a practical photo of the test component used in an embodiment of the present utility model; Figure 4 is a practical photo of the paperless recorder used in an embodiment of the present utility model; Figure 5 is a practical photo of the test component fixed to the steel material in an embodiment of the present utility model; Figure 6 is a practical photo of multiple steel materials in the heating furnace in an embodiment of the present utility model.

[0037] The present utility model provides a system for monitoring the temperature of steel materials in a heating furnace. In the present utility model, the system for monitoring the temperature of steel materials in the heating furnace includes: a test component for being arranged on the outer side surface of the steel material in heat transfer contact with the steel material, the test component having an accommodation space; a thermocouple that can be assembled into the accommodation space for performing real-time temperature monitoring; a recorder connected to the thermocouple for recording real-time temperature monitoring information; wherein, the test component is made of a high-temperature resistant material, and in the heating furnace, the temperature of the test component is consistent with the temperature of the steel material.

[0038] The utility model creatively additionally provides a test component which is closely attached to the steel material and heated together with the steel material. During the heating process, the test component and the steel material are heated together and the temperature rises. At the same time, the test component and the steel material are attached together to form a heat transfer connection relationship with the steel material, so that the temperature of the steel material is consistent with the temperature of the test component. By obtaining the temperature of the test component, the accurate temperature of the steel material can be obtained. The advantages of the utility model are that it does not damage the monitored steel material, has a low cost and can operate stably for a long time. The utility model has been put into practical application and has been implemented many times in the production of hot high-temperature alloys and high-strength steel materials. Its monitoring process is stable, does not damage the heated material, and has a low monitoring cost.

[0039] Based on the above system for monitoring the temperature of steel materials in a heating furnace, in the actual operation process of the utility model, the method for real-time temperature monitoring of steel materials is as follows: In the utility model, a test component 2 capable of heat transfer with the steel material 1 is arranged on the outer side surface of the steel material 1. The test component 2 is made of high-temperature resistant materials. In the heating furnace, the temperature of the test component 2 is consistent with the temperature of the steel material 1. An electric couple 3 for real-time monitoring of the temperature of the test component 2 is installed in the test component 2, and before the steel material 1 enters the furnace, the test component 2 and the electric couple 3 are fixed to the steel material 1 and enter the furnace together with the steel material 1.

[0040] In the above method, the core concept of the utility model is: arranging a test component 2, the test component 2 is made of the same material as the steel material 1 (the heated material), the test component 2 is closely attached to the steel material 1 and heated together with the steel material 1, and there is heat transfer contact between the test component 2 and the steel material 1, so that the real-time temperature of the test component 2 and the steel material 1 can be guaranteed to be consistent to the greatest extent. By obtaining the real-time temperature inside the test component 2, the real-time temperature of the steel material 1 can be obtained. The requirements for the test component 2 in the utility model are as follows: 1. In terms of materials, it should be both high-temperature resistant and have excellent heat transfer performance. If the above conditions cannot be met, it is necessary to ensure that the manufacturing material of the test component 2 is the same as that of the steel material 1; 2. In terms of setting, the test component 2 is closely attached to the steel material 1, so that the heating environment where the test component 2 is located is the same as that of the steel material 1; 3. In terms of structure, the test component 2 should have a cavity structure for installing the electric couple 3, and at the same time, the cavity structure of the test component 2 for installing the electric couple 3 should also be a closed space to prevent the electric couple 3 from being exposed to the heating environment, so as to improve the credibility of the data obtained by the electric couple 3.

[0041] In a specific embodiment of the utility model:

[0042] 1. The manufacturing material of the test component 2 is the same as that of the steel material 1;

[0043] 2. The test component 2 is a long straight pipe structure. One end of the test component 2 is closed and the other end is open. The front end of the test component 2 is closed. The head end (i.e., the hot end) of the thermocouple 3 (in the present utility model, the hot end of the thermocouple 3 is arranged inside the test component 2, and the other parts of the metal wires of the thermocouple 3 are located outside the test component 2) is inserted into the inside of the test component 2 from the rear end of the test component 2. The rear end of the test component 2 is provided with a high-temperature resistant heat insulation material 5 (the high-temperature resistant heat insulation material 5 is a commonly used high-temperature resistant heat insulation blanket in the prior art) to block its rear end. Specifically, the test component 2 is a heat-resistant short steel pipe, and the front end of the test component 2 is a flat structure and the opening is closed by welding. An opening structure is reserved at the other end of the test component 2. After the thermocouple 3 is installed, the other end also needs to be closed by certain technical means, such as setting a high-temperature resistant heat insulation material to block the opening, or setting a metal plug to block the opening with the metal plug. Further, the diameter of the cavity structure of the test component 2 should not be too large, and it is optimal to be just able to insert the thermocouple 3 (specifically referring to being just able to insert the hot end of the thermocouple 3). At the same time, the maximum diameter of the test component 2 should not be too large, and the optimal design is not to exceed twice the diameter of the cavity structure;

[0044] 3. The test component 2 is fixed on the outer side surface of the steel material 1 by a heat-resistant steel wire 4 or a waste thermocouple in a bundling manner. This facilitates the adjustment of the fixed position of the test component 2 on the steel material 1, and at the same time can realize the secondary utilization of the test component 2 and the thermocouple 3. Such a design will not cause structural damage to the steel material 1;

[0045] 4. The thermocouple 3 extends out of the heating furnace in a long straight state. The thermocouple 3 is fixed on the outer side surface of the steel material 1 by a heat-resistant steel wire 4 or a waste thermocouple 3 in a bundling manner. Specifically, the thermocouple 3 is a thermocouple, including metal wires. One end of the metal wires is the hot end, and the hot end is arranged inside the test component 2. The long straight state of the thermocouple 3 means that the part of the metal wires corresponding to the steel material 1 is in a long straight state. Without affecting the temperature measurement, the shapes of the other parts of the metal guides of the thermocouple 3 are arbitrary.

[0046] 5. The axis of the test component 2 is parallel to the axis of the steel material 1, and the axis of the thermocouple 3 is parallel to the axis of the steel material 1;

[0047] 6. When heating a steel material 1 in the same heating furnace, the present utility model can simultaneously set multiple test components 2 on this steel material 1. Along the axis of the steel material 1, the multiple test components 2 are arranged at equal intervals. One thermocouple 3 is installed in each test component 2. Additionally, when multiple steel materials 1 are arranged in the heating furnace for simultaneous heating, at least one test component 2 needs to be set on each steel material 1, and one thermocouple 3 needs to be installed in each test component 2. In an embodiment where multiple steel materials 1 are loaded into the heating furnace and one test component 2 is set on each steel material 1, all the steel materials 1 are arranged at intervals in the heating furnace and their axes are parallel, while the test components 2 are arranged in a staggered manner (for example: when three steel materials 1 are arranged in the heating furnace, one test component 2 is set near the front end of the first steel material 1, one test component 2 is set at the middle position of the second steel material 1, and one test component 2 is set near the rear end of the third steel material 1).

[0048] 7. Set up a paperless recorder 6 connected to the thermocouple 3 for recording the real-time monitored temperature information obtained by the thermocouple 3. It should be noted that when multiple thermocouples 3 are set, the corresponding relationship of "thermocouple 3 - corresponding steel material 1 - set position" must be clearly and detailedly recorded.

[0049] In an embodiment of the present utility model, one thermocouple and one test component form a test unit. For a steel material, it can use one side test unit for temperature monitoring. When using one test unit for temperature monitoring, the test unit (test component) is set at the middle of the steel material or near the front end of the steel material. In another embodiment of the present utility model, multiple test units form a test group, and one test group can conduct temperature monitoring on a steel material. In this embodiment, one test group includes three test units, which are respectively set at the middle of the steel material and near both ends. And when the steel material lies horizontally in the heating furnace, the test units are all located on the upper surface of the steel material (there can be a slight position deviation to provide a space for the extension of the thermocouple).

[0050] Furthermore, multiple test groups are set up for simultaneous temperature monitoring of multiple steel materials. This setting method is applied to the embodiment where multiple steel materials are arranged in the heating furnace simultaneously.

[0051] Based on the above method for monitoring the temperature of the steel material 1 in the heating furnace, the present utility model provides a system for monitoring the temperature of the steel material 1 in the heating furnace. In this system, the present utility model includes: a test component 2 configured to be in heat transfer contact with the outer side surface of the steel material 1, the test component 2 having an accommodation space; a thermocouple 3 that can be assembled into the accommodation space for real-time temperature monitoring; and a recorder connected to the thermocouple 3 for recording real-time temperature monitoring information. Among them, the test component 2 is made of high-temperature resistant material, and in the heating furnace, the temperature of the test component 2 is consistent with the temperature of the steel material 1.

[0052] Specifically, the manufacturing material of the test component 2 is the same as that of the steel material 1; the test component 2 is a heat-resistant short steel pipe, and the axis of the test component 2 is parallel to the axis of the steel material 1; the front end of the test component 2 is closed, and the rear end of the test component 2 is for the insertion of the thermocouple 3 and is sealed with high-temperature resistant heat insulation material 5.

[0053] As is known from the prior art, during the heating process of the material to be heated using a heating furnace, the temperature at the furnace wall or furnace top of the heating furnace is always obtained, and there is a certain deviation between the obtained temperature value and the actual temperature of the material to be heated. If the accurate actual temperature of the material to be heated is to be obtained, it is necessary to drill a hole in the material to be heated and then bury the temperature-measuring thermocouple 3 into the hole to obtain the temperature of the material to be heated, but this method will cause damage to the structure of the material to be heated.

[0054] For materials with a relatively narrow heating temperature range, during the heating process of the material, the heat preservation temperature range of the material to be heated is also relatively narrow (generally between 1020 and 1200 °C), and at the same time, its heat preservation time is also relatively long (the required maximum heat preservation time can reach more than 100 hours). During the monitoring process, methods such as drilling cannot be used to damage the monitored material (the material to be heated), and it is also required that the monitoring system can operate stably.

[0055] To meet the above requirements, the present utility model provides a new method for monitoring the temperature of the steel material 1 in the heating furnace. In this method, the main steps are as follows:

[0056] 1. Materials required for preparation before detection: the thermocouple 3 for testing, a paperless recorder 6 for monitoring / recording temperature, a heat-resistant short steel pipe, heat-resistant steel wire 4 or a used thermocouple 3. Among them, the heat-resistant short steel pipe for testing is required to have one end flattened and welded and sealed, and the other end is sealed with a heat preservation blanket after inserting the thermocouple 3. The axis of the heat-resistant short steel pipe is parallel to the axis of the material to be heated, and the heat-resistant short steel pipe is tied to the outer side surface of the material to be heated through the heat-resistant steel wire 4 or the used thermocouple 3. The flattened and welded and sealed end of the heat-resistant short steel pipe faces forward, and the other end faces backward. The thermocouple 3 extends outward in a direction parallel to the axis of the material to be heated. The heat-resistant short steel pipe is fixed by at least one heat-resistant steel wire 4 or a used thermocouple 3, and the outward-extending thermocouple 3 is fixed by at least one heat-resistant steel wire 4 or a used thermocouple 3.

[0057] 2. Install the test thermocouple 3 into the heat-resistant short steel pipe (from the unclosed opening at the rear end of the heat-resistant short steel pipe). Weld and seal one end of the heat-resistant short steel pipe, and use a heat-insulating blanket to seal the other end of the heat-resistant short steel pipe. Then, use the heat-resistant steel wire 4 or the waste thermocouple 3 to tie the heat-resistant short steel pipe to the material to be heated. Next, load the material to be heated into the furnace, and insert the corresponding thermocouple 3 into the test channel of the material recorder according to the thermocouple 3 number on the test plan.

[0058] 3. Turn on the paperless recorder 6 and check whether the temperature in the channel with the corresponding number is normally displayed. If the display is normal, start the test. If the channel with the corresponding number cannot be normally displayed, find out the reason and start the test after restoring it to normal.

[0059] Taking two thermocouples 3 as an example for illustration: Connect two test thermocouples 3, use channels 0001 and 0002, set the holding temperature of the heating furnace thermocouple 3 to 1190 °C, and monitor through the two thermocouples 3. The temperatures displayed by the material temperature monitoring thermocouples 3 are 1188.2 °C and 1191.1 °C.

[0060] As can be seen from the above, the present invention provides a method for monitoring the temperature of the steel material 1 in a heating furnace. In this method, a test component 2 capable of heat transfer with the steel material 1 is arranged on the outer side surface of the steel material 1. The test component 2 is made of high-temperature resistant material. In the heating furnace, the temperature of the test component 2 is kept consistent with the temperature of the steel material 1. An electric couple 3 for real-time monitoring of the temperature of the test component 2 is installed in the test component 2, and before the steel material 1 enters the furnace, the test component 2 and the electric couple 3 are fixed to the steel material 1 and enter the furnace together with the steel material 1. The present invention also provides a system for monitoring the temperature of the steel material 1 in a heating furnace. The system includes: a test component 2 for being arranged on the outer side surface of the steel material 1 and in heat transfer contact with the steel material 1, the test component 2 having an accommodation space; an electric couple 3 that can be assembled into the accommodation space for real-time temperature monitoring; a recorder connected to the electric couple 3 for recording real-time temperature monitoring information; wherein, the test component 2 is made of high-temperature resistant material, and in the heating furnace, the temperature of the test component 2 is kept consistent with the temperature of the steel material 1. The present invention creatively provides a method for monitoring the temperature of the steel material 1 in a heating furnace. Through the design of its method, the advantages of the present invention are that it does not damage the steel material 1 to be monitored, has a low cost, and can operate stably for a long time. The present invention has been put into practical application and has been implemented multiple times in the production of heat-resistant superalloys and high-strength steel materials 1. Its monitoring process is stable, does not damage the material to be heated, and has a low monitoring cost.

[0061] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A system for monitoring the temperature of steel in a heating furnace, characterized in that: include: A test component used to be arranged on the outer surface of the steel material and in heat transfer contact with the steel material, wherein the test component has a receiving space; A thermocouple that can be assembled into the receiving space for real-time temperature monitoring; A recorder connected to the thermocouple for recording real-time temperature monitoring information; Wherein, the test component is made of high temperature resistant material, and in the heating furnace, the temperature of the test component is consistent with the temperature of the steel material.

2. The system for monitoring the temperature of steel in a heating furnace according to claim 1, characterized in that: The test parts were made of the same material as the steel.

3. The system for monitoring the temperature of steel in a heating furnace according to claim 1, characterized in that: The test component is a heat-resistant steel pipe.

4. The system for monitoring the temperature of steel in a heating furnace according to claim 3, characterized in that: The axis of the test component is parallel to the axis of the steel material.

5. The system for monitoring the temperature of steel in a heating furnace according to claim 4, characterized in that: The thermocouple is arranged at a thermocouple head end in the test component, and the thermocouple head end is coaxially arranged with the test component.

6. The system for monitoring the temperature of steel in a heating furnace according to claim 4, characterized in that: The front end of the test component is closed, the rear end of the test component is provided with an opening for loading the thermocouple, and a heat-insulating material is provided at the rear end of the test component.

7. The system for monitoring the temperature of steel in a heating furnace according to claim 6, characterized in that: The front end of the test component is a flat opening and is closed by welding.

8. The system for monitoring the temperature of steel in a heating furnace according to claim 1, characterized in that: The recorder is a paperless recorder.

9. The system for monitoring the temperature of steel in a heating furnace according to any one of claims 1 to 8, characterized in that: One thermocouple and one test component form a test unit, and a plurality of test units form a test group for temperature monitoring of a steel material.

10. The system for monitoring the temperature of steel in a heating furnace according to claim 1, characterized in that: There are multiple test groups for simultaneously monitoring the temperature of multiple steel materials.

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