Temperature measuring equipment used in tubular furnace
By combining a thermal radiation receiver with a type K thermocouple in the temperature measuring device, the problem of poor thermal matching between the temperature probe and the reaction tube was solved, resulting in more accurate temperature measurement and enhanced accuracy of the temperature measuring device.
Patent Information
- Application Number
- CN202423285731.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-30
AI Technical Summary
In existing temperature measurement equipment, the mismatch between the temperature probe and the reaction tube leads to poor temperature measurement accuracy, especially at low temperatures where the contact is limited and at high temperatures where the radiation receiving capacity is weak, affecting the consistency of temperature measurement.
The heat radiation receiver is combined with the detection end of a K-type thermocouple. The heat radiation receiver is brought into contact with the outer wall of the reaction tube through a ceramic sheath. The heat radiation receiver's thermal conductivity is used to quickly transfer heat and increase the area of heat radiation to improve the accuracy of temperature measurement.
By increasing the contact surface and the heated area, the accuracy of the temperature measuring equipment was improved, the problem of poor thermal matching between the temperature probe and the reaction tube was solved, and more accurate temperature measurement was achieved.
Smart Images
Figure CN223597019U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to temperature measuring equipment technical field especially is related to a kind of for pipe furnace internal temperature measuring equipment. BACKGROUND
[0002] Pipe furnace catalytic evaluation device is a kind of reaction evaluation equipment commonly used in laboratory, corresponding temperature probe is generally arranged in the furnace hearth and reaction tube of pipe furnace, for monitoring and controlling reaction temperature condition. Since the temperature probe in the furnace hearth has fast response speed and high sensitivity, it is often used as control temperature probe, and the temperature probe in the reaction tube is often used for monitoring temperature due to heat transfer and temperature lag. The consistency of temperature measurement of the two becomes a key indicator.
[0003] In the existing temperature measuring process, straight cannula is mostly used, temperature probe (thermocouple or thermal resistance, etc.) is placed in the cannula, and the temperature probe is inserted into the furnace from the outside of the furnace body and directly contacts the reaction tube. The above-mentioned temperature measuring temperature probe has the problem of matching with the reaction tube, that is, there is obvious difference in heating mode between the two; at low temperature, the proportion of convective heat transfer is large, the contact between the temperature measuring point of the temperature probe and the reaction tube is limited, and the temperature measuring point is in a non-uniform temperature field, causing the temperature measured by the temperature probe to be higher than the outer wall temperature of the reaction tube; at high temperature, the proportion of radiation heat transfer is large, and radiation heat transfer has a certain direction shape, the radiation receiving capacity of the temperature probe is weak compared with the reaction tube, causing the temperature measured by the temperature probe to be lower than the outer wall temperature of the reaction tube, and even lower than the temperature in the pipe.
[0004] Therefore, there is an urgent need for a temperature measuring equipment for pipe furnace that can effectively improve the temperature measuring accuracy. UTILITY MODEL CONTENT
[0005] The utility model aims at providing a temperature measuring equipment for pipe furnace, solving the technical problem that the temperature measuring temperature probe in the prior art has the problem of matching with the reaction tube, that is, there is obvious difference in heating mode between the two, which affects the temperature measuring accuracy. The preferred technical solutions in many technical solutions provided by the utility model can produce many technical effects, which are described in detail below.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions:
[0007] The utility model provides a temperature measuring equipment for pipe furnace, which comprises:
[0008] The first end of the ceramic sleeve is inserted into the pipe furnace.
[0009] The detection end of the K-type thermocouple passes through the ceramic sleeve and is arranged in close contact with the reaction tube.
[0010] A heat radiation receiver is arranged at the detecting end of the K-type thermocouple, and a receiving surface of the heat radiation receiver is arranged corresponding to the heat radiation direction of the reaction tube.
[0011] Preferably, the heat radiation receiver is arranged as an arc surface close to the side surface of the reaction tube, and the arc surface is arranged in close contact with the outer side wall of the reaction tube.
[0012] Preferably, the heat radiation receiver is a sheet body arranged in close contact with the reaction tube.
[0013] Preferably, the heat radiation receiver is a semi-ring structure arranged in close contact with the reaction tube.
[0014] Preferably, the heat radiation receiver is a semi-ring structure arranged in close contact with the reaction tube.
[0015] A spring is sleeved on the K-type thermocouple and located in the ceramic sleeve, one end of the heat radiation receiver away from the reaction tube is fixedly connected with a connecting rod, the detecting end of the K-type thermocouple is fixedly penetrated into the connecting rod, the ceramic sleeve is sleeved on the connecting rod, and the spring is abutted between one end of the connecting rod away from the heat radiation receiver and the inner side wall of the ceramic sleeve.
[0016] Preferably, the heat radiation receiver is a semi-ring structure arranged in close contact with the reaction tube.
[0017] A plurality of reserved holes are circumferentially arranged on the side wall of the connecting rod and are in communication with the connecting rod;
[0018] A ring-shaped clip is clamped into the reserved hole and clamped on the K-type thermocouple.
[0019] Preferably, the heat radiation receiver is a semi-ring structure arranged in close contact with the reaction tube.
[0020] A fixing plate is fixedly connected to the second end of the ceramic sleeve by a plurality of screws and is also fixedly connected to the outer side wall of the tubular furnace, and the K-type thermocouple penetrates through the fixing plate.
[0021] Preferably, the heat radiation receiver is a semi-ring structure arranged in close contact with the reaction tube.
[0022] A plurality of first through holes are arranged on the fixing plate, and the screws penetrate through the first through holes.
[0023] Preferably, the heat radiation receiver is a semi-ring structure arranged in close contact with the reaction tube.
[0024] A second through hole is arranged in the connecting rod, and the K-type thermocouple penetrates into the second through hole.
[0025] Preferably, the heat radiation receiver is a semi-ring structure arranged in close contact with the reaction tube.
[0026] The technical scheme provided by the utility model discloses a heat radiation receiver is adopted, and the heat radiation receiver is in contact with the detection end of the K-type thermocouple, the heat radiation receiver is contacted to the outer lateral wall of the reaction tube through the ceramic sleeve, and is matched with the outer lateral wall of the reaction tube, the heat of the reaction tube is quickly transmitted to the detection end of the K-type thermocouple through the heat conduction performance of the heat radiation receiver, the temperature of the reaction tube is accurately detected by increasing the contact area, and the conduction heat transfer is effectively improved, and the detection end of the K-type thermocouple is in contact with the reaction tube by increasing the heat radiation area, so that the pipe wall temperature is accurately measured. BRIEF DESCRIPTION OF DRAWINGS
[0027] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the following description drawings are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creating creative labor.
[0028] Figure 1 It is the connection schematic diagram of K-type thermocouple, ceramic sleeve and heat radiation receiver in the utility model embodiment 1 and 3;
[0029] Figure 2 It is the cross-sectional schematic diagram of K-type thermocouple, ceramic sleeve and heat radiation receiver in the utility model embodiment 1 and 3;
[0030] Figure 3 It is the heat radiation receiver schematic diagram in the utility model embodiment 2;
[0031] Figure 4 It is the cross-sectional schematic diagram of ceramic sleeve and connecting rod in the utility model embodiment 2;
[0032] Figure 5 It is the heat radiation receiver schematic diagram in the utility model embodiment 4.
[0033] 1, K-type thermocouple;2, fixed plate;3, spring;4, ceramic sleeve;5, connecting rod;6, heat radiation receiver;7, first through hole;8, second through hole. DETAILED DESCRIPTION
[0034] In order to make the purpose, technical scheme and advantage of the utility model more clear, the following will be described in detail to the technical scheme of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other implementation manners obtained by those skilled in the art without creating creative labor belong to the range of protection of the utility model.
[0035] Embodiment 1, reference Figures 1-2 The utility model discloses a specific embodiment provides a kind of for tubular furnace internal temperature measuring equipment, comprising:
[0036] Ceramic sleeve 4, the first end of ceramic sleeve 4 is worn into tubular furnace inside;
[0037] K-type thermocouple 1, the detection end of K-type thermocouple 1 passes through ceramic sleeve 4, and correspondingly arranged with reaction tube;
[0038] Heat radiation receiver 6, heat radiation receiver 6 is arranged at the detection end of K-type thermocouple 1, and the receiving surface of heat radiation receiver 6 is correspondingly arranged with the heat radiation direction of reaction tube.
[0039] Existing temperature measuring process, most use straight sleeve, place temperature probe (thermocouple or thermal resistance etc.) in sleeve, from furnace body outside side and insert into furnace, directly point contact reaction tube.The above-mentioned temperature measuring temperature probe is relatively thin, and there is matching problem with reaction tube, that is, the heating mode of both is obviously different;At low temperature, the proportion of convection heat transfer is large, the contact of temperature probe temperature measuring point and reaction tube is limited, and is in non-uniform temperature field, causes temperature probe to measure temperature higher than reaction tube outer wall temperature;At high temperature, the proportion of radiation heat transfer is large, and radiation heat transfer has certain direction shape, and compared with reaction tube, the radiation receiving capacity of temperature probe is weak, causes temperature probe to measure temperature lower than reaction tube outer wall temperature, even lower than pipe temperature.The heat radiation receiver 6 is used in the application, and the heat radiation receiver 6 is arranged at the detection end of K-type thermocouple 1, and the heat radiation receiver 6 is contacted to the outer side wall of reaction tube through ceramic sleeve 4, and is adapted with the outer side wall of reaction tube, and the radiation heat of reaction tube is quickly transferred to the detection end of K-type thermocouple 1 through the heat conduction performance of heat radiation receiver 6;In this way, by increasing the contact surface, the temperature of reaction tube is more accurately detected, the conduction heat transfer is effectively improved, and the detection end of K-type thermocouple 1 is contacted with reaction tube by increasing the heat radiation area, to accurately measure the temperature of pipe wall.
[0040] Further optimization scheme further includes:
[0041] Fixed plate 2, fixed plate 2 is fixedly connected on the second end of ceramic sleeve 4 through a plurality of screws, and is also fixedly connected on the outer side wall of tubular furnace, and K-type thermocouple 1 passes through fixed plate 2.
[0042] The main role of fixed plate 2 is to fixedly connect ceramic sleeve 4 located outside tubular furnace on the outer side wall of tubular furnace.
[0043] Further optimization scheme further includes:
[0044] First through hole 7, a plurality of first through holes 7 are arranged on fixed plate 2, and screw passes through first through hole 7.
[0045] The screw is screwed with the outer side wall of the tube furnace after passing through the first through hole 7 on the fixing plate 2, and the ceramic sleeve 4 is fixed on the outer side wall of the tube furnace through the fixing plate 2.
[0046] Embodiment 2, reference Figures 3-4 The difference between this embodiment and embodiment 1 is only that the side surface of the heat radiation receiver 6 close to the reaction tube is provided as an arc surface, and the arc surface is arranged in abutment with the outer side wall of the reaction tube; wherein the receiving surface area of the heat radiation receiver 6 is designed according to the temperature field distribution in the reaction tube to avoid affecting the temperature measurement accuracy.
[0047] The side surface of the heat radiation receiver 6 close to the reaction tube is provided as an arc surface, which further ensures the close contact between the heat radiation receiver 6 and the reaction tube, that is, effectively improves the accuracy of temperature measurement.
[0048] Further optimization scheme, also includes:
[0049] The spring 3 is sleeved on the K-type thermocouple 1 and located in the ceramic sleeve 4, the heat radiation receiver 6 is fixedly connected with the connecting rod 5 at one end away from the reaction tube, the detection end of the K-type thermocouple 1 is fixedly penetrated into the connecting rod 5, the ceramic sleeve 4 is sleeved on the connecting rod 5, and the spring 3 is abutted between one end of the connecting rod 5 away from the heat radiation receiver 6 and the inner side wall of the ceramic sleeve 4.
[0050] In the initial state, the spring 3 is in a free state; when the ceramic sleeve 4 is inserted into the tube furnace until the heat radiation receiver 6 contacts the reaction tube, in order to ensure the close contact between the heat radiation receiver 6 and the reaction tube, the ceramic sleeve 4 is continuously pushed, at this time, the spring 3 is gradually compressed, and the heat radiation receiver 6 is in abutment with the reaction tube, and then the second end of the ceramic sleeve 4 is fixedly connected to the outer side wall of the tube furnace.
[0051] Further optimization scheme,
[0052] Further optimization scheme, also includes:
[0053] The plurality of reserved holes are circumferentially arranged on the side wall of the connecting rod 5 and communicate with the connecting rod 5;
[0054] The annular clip is clamped into the reserved hole and clamped on the K-type thermocouple 1.
[0055] Before the ceramic sleeve 4 is inserted into the tube furnace; after the detection end of the K-type thermocouple 1 is penetrated into the connecting rod 5 and arranged in contact with the heat radiation receiver 6, the annular clip is clamped into the reserved hole, and then clamped on the K-type thermocouple 1, to prevent the relative movement between the K-type thermocouple 1 and the connecting rod 5, and affect the effective contact between the detection end of the K-type thermocouple 1 and the heat radiation receiver 6.
[0056] Further optimization scheme, also includes:
[0057] The second through hole 8 is arranged in the connecting rod 5, and the K-type thermocouple 1 penetrates into the second through hole 8.
[0058] The K-type thermocouple 1 penetrates into the second through hole 8 until it is in contact with the heat radiation receiver 6, and then is clamped by the annular clip, so that the position of the K-type thermocouple 1 in the second through hole 8 is relatively fixed, thereby achieving the purpose of effective contact between the detection end of the K-type thermocouple 1 and the heat radiation receiver 6. The spring 3 is sleeved on the K-type thermocouple 1.
[0059] In a further optimization scheme, the heat radiation receiver 6 is made of the same material as the reaction tube or a similar material, so as to ensure accurate heat conduction effect.
[0060] Embodiment 3, for reference Figures 1-2 The difference between the present embodiment and the embodiment 1 is that the heat radiation receiver 6 is a sheet body, and the sheet body is arranged in close contact with the reaction tube. The sheet body can be a thin sheet body with good heat conductivity and a certain elasticity. The receiving surface area of the heat radiation receiver 6 is designed according to the temperature field distribution in the reaction tube, so as to avoid affecting the temperature measurement accuracy.
[0061] Embodiment 4, for reference Figure 5 The difference between the present embodiment and the embodiment 1 is that the heat radiation receiver 6 is a semi-annular structure, and the semi-annular structure is arranged in close contact with the reaction tube. The semi-annular structure can be made of a heat conductive material.
[0062] It should be noted that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicated in the description herein indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplification of the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0063] In the description herein, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific circumstances.
[0064] The above merely describes a specific implementation of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A temperature measuring device for use in a tubular furnace, characterized in that, include: Ceramic sleeve (4), the first end of which is inserted into the tube furnace; K-type thermocouple (1), the detection end of the K-type thermocouple (1) passes through the ceramic sleeve (4) and is fitted to the reaction tube; A heat radiation receiver (6) is provided with the detection end of the K-type thermocouple (1), and the receiving surface of the heat radiation receiver (6) is arranged in accordance with the heat radiation direction of the reaction tube.
2. The temperature measuring device for a tubular furnace according to claim 1, characterized in that, The side of the heat radiation receiver (6) near the reaction tube is set as an arc-shaped surface, and the arc-shaped surface is fitted to the outer wall of the reaction tube.
3. The temperature measuring device for a tubular furnace according to claim 1, characterized in that, The heat radiation receiver (6) is a sheet, which is attached to the reaction tube.
4. The temperature measuring device for a tubular furnace according to claim 1, characterized in that, The heat radiation receiver (6) has a semi-annular structure, and the semi-annular structure is fitted to the reaction tube.
5. The temperature measuring device for a tubular furnace according to claim 2, characterized in that, Also includes: A spring (3) is sleeved on the K-type thermocouple (1) and located inside the ceramic sleeve (4). A connecting rod (5) is fixedly connected to the end of the heat radiation receiver (6) away from the reaction tube. The detection end of the K-type thermocouple (1) is fixedly inserted into the connecting rod (5). The ceramic sleeve (4) is sleeved on the connecting rod (5). The spring (3) abuts against the end of the connecting rod (5) away from the heat radiation receiver (6) and the inner wall of the ceramic sleeve (4).
6. The temperature measuring device for a tubular furnace according to claim 5, characterized in that, Also includes: Reserved holes, a plurality of the reserved holes are circumferentially opened on the side wall of the connecting rod (5) and communicate with the inside of the connecting rod (5); A ring-shaped clip is inserted into the reserved hole and clamped onto the K-type thermocouple (1).
7. The temperature measuring device for a tubular furnace according to any one of claims 2-4, characterized in that, Also includes: The fixing plate (2) is fixedly connected to the second end of the ceramic sleeve (4) by several screws, and is also fixedly connected to the outer wall of the tubular furnace. The K-type thermocouple (1) passes through the fixing plate (2).
8. The temperature measuring device for a tubular furnace according to claim 7, characterized in that, Also includes: A first through hole (7) is formed on the fixing plate (2), and the screw passes through the first through hole (7).
9. The temperature measuring device for a tubular furnace according to claim 5, characterized in that, Also includes: The second through hole (8) is opened inside the connecting rod (5), and the K-type thermocouple (1) passes through the second through hole (8).
10. The temperature measuring device for a tubular furnace according to claim 1, characterized in that, The heat radiation receiver (6) is made of the same material as the reaction tube.