Method and structure for non-contact measurement of metal temperature at high temperatures

Abstract

The present application relates to the technical field of metal processing, and relates to a non-contact temperature measurement method and structure for high-temperature metal. The measuring end of the measuring cylinder is arranged through the measuring channel and opposite to the measured product in the furnace body. The temperature measuring head of the infrared temperature detector is arranged opposite to the detection end of the measuring cylinder. The infrared temperature detector performs non-contact temperature detection on the measured product arranged opposite to the measuring cylinder, realizes non-contact temperature detection of the metal product in the heating furnace, does not need to additionally arrange a temperature measuring device in the furnace body, can avoid heat leakage in the furnace while ensuring the surface temperature of the metal ingot, makes the metal ingot forming effect better, and can improve the use effect and service life by using non-contact temperature detection.

Description

Technical Field

[0001] This invention relates to the field of metal processing technology, and specifically to a non-contact method and structure for measuring the temperature of metals at high temperatures. Background Technology

[0002] In existing metal processing furnaces such as heating furnaces, annealing furnaces, and soaking furnaces, temperature measurement inside the furnace mainly uses contact thermocouples. Contact probes are easily damaged by the high temperature, dust, and corrosive gases inside the furnace, requiring frequent replacements and incurring high maintenance costs. They can also scratch and contaminate metal workpieces, compromise the furnace's seal, and cause heat and process gases to leak out, affecting the stability of the furnace's internal conditions. Opening the furnace door to test the temperature makes it difficult to balance temperature measurement accuracy, equipment protection, sealing and insulation, and operational safety, making it unsuitable for long-term continuous production needs. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a non-contact temperature detection method and structure for measuring the surface temperature of metal ingots at high temperatures while avoiding heat leakage inside the furnace.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A non-contact metal temperature measurement structure for high-temperature applications includes: A base is provided on the furnace body, on which a measuring channel is provided. The base is located on the outer wall of the furnace body, and a measuring cylinder is provided on the base. The measuring end of the measuring cylinder passes through the measuring channel and is positioned opposite to the product to be measured inside the furnace body. A measuring component is disposed on the outer wall of the furnace body. The measuring component includes a measuring frame, on which an infrared thermometer is disposed. The measuring head of the infrared thermometer is disposed opposite to the detection end of the measuring cylinder. The infrared thermometer is used to perform non-contact temperature detection on the product to be tested disposed opposite to the measuring cylinder.

[0005] In one embodiment of the present invention, the measuring frame includes a fixed frame and a movable frame. The fixed frame is disposed on the outer side wall of the furnace body, and the infrared thermometer is disposed on the movable frame. The fixed frame and the movable frame are connected by an adjusting component.

[0006] In one embodiment of the present invention, the fixed frame is provided with a plurality of waist-shaped grooves evenly arranged in a straight line, the straight line being parallel to the central axis of the measuring cylinder, and the movable frame is provided with a plurality of fixing holes that match the waist-shaped grooves, the fixing holes on the movable frame being connected to the waist-shaped grooves on the fixed frame by bolts.

[0007] In one embodiment of the present invention, the furnace body includes a main body, a furnace wall steel plate is provided on the outer side wall of the main body, the base is welded to the furnace wall steel plate, a heat insulation layer is provided on the inner side of the main body, the measuring channel penetrates the furnace wall steel plate, the main body and the heat insulation layer, a support sleeve is provided on the measuring channel, and the measuring cylinder passes through the support sleeve.

[0008] In one embodiment of the present invention, a measuring opening is provided on the measuring end of the measuring cylinder. The measuring opening has a flared structure, and the edge diameter of the measuring opening is larger than the diameter of the measuring end.

[0009] In one embodiment of the present invention, the detection end of the measuring cylinder is provided with an installation sleeve, the installation sleeve and the measuring cylinder are connected by threads, a fixing plate is fitted on the installation sleeve, the fixing plate and the base are connected by bolts, and a sealing gasket is provided between the fixing plate and the base.

[0010] In one embodiment of the present invention, a tube body is provided on the detection end of the measuring cylinder, the tube body is threadedly connected to the mounting sleeve, and a blocking component is provided on the tube body for shielding the detection end of the measuring cylinder.

[0011] In one embodiment of the present invention, the blocking component is a valve, which is either a ball valve or a lift valve. By rotating the valve, the detection end of the measuring cylinder is allowed to leak out of the furnace body to test the product.

[0012] In one embodiment of the present invention, a detection lens is provided on the tube body, and the detection lens is located between the valve and the measuring cylinder.

[0013] The present invention also includes a non-contact method for measuring the temperature of metals at high temperatures. Several measuring channels are opened on the side wall of the furnace body, and measuring cylinders are inserted and installed in the measuring channels. The measuring end of the measuring cylinder is positioned opposite to the product being tested inside the furnace body, with a distance of 5-15 cm between the measuring end and the product being tested. An infrared thermometer is installed on the outside of the furnace body, with the measuring head of the infrared thermometer aligned with the measuring cylinder. The infrared thermometer performs non-contact temperature detection on the product being tested that is exposed at the measuring cylinder.

[0014] The beneficial effects of this invention are: The measuring end of the measuring cylinder of the present invention passes through the measuring channel and is positioned opposite to the product being tested inside the furnace. The temperature measuring head of the infrared thermometer is positioned opposite to the detection end of the measuring cylinder. The infrared thermometer performs non-contact temperature detection on the product being tested positioned opposite the measuring cylinder, realizing non-contact temperature detection of metal products inside the heating furnace. There is no need to install an additional temperature measuring device inside the furnace. It can ensure the surface temperature of the metal ingot while avoiding heat leakage inside the furnace, resulting in better metal ingot forming effect. The use of non-contact temperature detection can improve its performance and lifespan. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a non-contact metal temperature measurement structure for high-temperature applications according to the present invention.

[0016] The following are the labels in the diagram: 1. Furnace body; 11. Main body; 12. Furnace wall steel plate; 13. Insulation layer; 14. Measuring channel; 15. Support sleeve; 2. Measuring cylinder; 21. Measuring opening; 3. Product being measured; 4. Base; 5. Pipe body; 51. Valve; 6. Infrared thermometer; 7. Measuring frame; 71. Fixed frame; 72. Moving frame; 73. Waist-shaped groove; 74. Fixing hole. Detailed Implementation

[0017] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0018] Reference Figure 1 As shown, a non-contact metal temperature measurement structure for high-temperature applications includes: A base 4 is disposed on the furnace body 1. A measuring channel 14 is provided on the furnace body 1. The base 4 is disposed on the outer side wall of the furnace body 1. A measuring cylinder 2 is disposed on the base 4. The measuring end of the measuring cylinder 2 passes through the measuring channel 14 and is positioned opposite to the product 3 to be measured inside the furnace body 1. A measuring component is disposed on the outer wall of the furnace body 1. The measuring component includes a measuring frame 7, on which an infrared thermometer 6 is disposed. The measuring head of the infrared thermometer 6 is disposed opposite to the detection end of the measuring cylinder 2. The infrared thermometer 6 is used to perform non-contact temperature detection on the product 3 to be measured, which is disposed opposite to the measuring cylinder 2.

[0019] The measuring end of the measuring cylinder 2 of the present invention passes through the measuring channel 14 and is positioned opposite to the product 3 to be measured inside the furnace body 1. The temperature measuring head of the infrared thermometer 6 is positioned opposite to the detection end of the measuring cylinder 2. The infrared thermometer 6 performs non-contact temperature detection on the product 3 to be measured, which is positioned opposite to the measuring cylinder 2, thereby realizing non-contact temperature detection of metal products in the heating furnace. There is no need to install an additional temperature measuring device inside the furnace body 1. This can ensure the surface temperature of the metal ingot while avoiding heat leakage inside the furnace, resulting in better metal ingot forming effect. The use of non-contact temperature detection can improve its performance and lifespan.

[0020] In one embodiment of the present invention, the measuring frame 7 includes a fixed frame 71 and a movable frame 72. The fixed frame 71 is disposed on the outer side wall of the furnace body 1, and the infrared thermometer 6 is disposed on the movable frame 72. The fixed frame 71 and the movable frame 72 are connected by an adjusting component.

[0021] Specifically, the infrared thermometer 6 is mounted on the movable frame 72. The fixed frame 71 and the movable frame 72 are connected by an adjustment component, which can adjust the position of the infrared thermometer 6 so that it can be aligned with the position of the product 3 being measured, thereby reducing infrared signal loss and improving temperature measurement accuracy.

[0022] In one embodiment of the present invention, a plurality of waist-shaped grooves 73 are uniformly provided on the fixed frame 71, and the plurality of waist-shaped grooves 73 are arranged in a straight line, the straight line being parallel to the central axis of the measuring cylinder 2. A plurality of fixing holes 74 matching the waist-shaped grooves 73 are provided on the movable frame 72, and the fixing holes 74 on the movable frame 72 are connected to the waist-shaped grooves 73 on the fixed frame 71 by bolts.

[0023] Specifically, the fixing hole 74 on the movable frame 72 is connected to the waist-shaped groove 73 on the fixed frame 71 by bolts. The straight line is parallel to the central axis of the measuring cylinder 2, so that the relative position of the infrared thermometer 6 can be adjusted according to actual production. This ensures that the measuring cylinder 2 and the outer infrared thermometer head are accurately aligned and avoids temperature measurement deviation.

[0024] In one embodiment of the present invention, the furnace body 1 includes a main body 11, a furnace wall steel plate 12 is provided on the outer side wall of the main body 11, the base 4 is welded on the furnace wall steel plate 12, a heat insulation layer 13 is provided on the inner side of the main body 11, the measuring channel 14 penetrates the furnace wall steel plate 12, the main body 11 and the heat insulation layer 13, a support sleeve 15 is provided on the measuring channel 14, and the measuring cylinder 2 passes through the support sleeve 15.

[0025] Specifically, the measuring channel 14 passes through the furnace wall steel plate 12, the main body 11, and the insulation layer 13. The measuring cylinder 2 is inserted through the support sleeve 15, so that it can form a straight light channel. The infrared light path is unbent and unobstructed, reducing light refraction and signal loss, and ensuring temperature measurement accuracy. The support sleeve 15 can form a structural reinforcement for the side wall of the furnace body 1. At the same time, the high coaxiality of the measuring cylinder 2 inserted through the support sleeve 15 can ensure that the measuring cylinder 2 and the outer infrared temperature measuring head are accurately aligned, avoiding temperature measurement deviation.

[0026] In one embodiment of the present invention, a measuring opening 21 is provided on the measuring end of the measuring cylinder 2. The measuring opening 21 has a flared structure and the edge diameter of the measuring opening 21 is larger than the diameter of the measuring end.

[0027] Specifically, the edge diameter of the measuring opening 21 is larger than the diameter of the measuring end, which can be 1.5-3 times larger. The measuring opening 21 is placed on both sides of the product being measured 3, which can gather the infrared radiation signal, reduce the obstruction and interference of flue gas, stray light and hot air flow in the furnace on the temperature measuring optical path, expand the effective temperature measuring range, and further enhance the detection accuracy.

[0028] In one embodiment of the present invention, the detection end of the measuring cylinder 2 is provided with an installation sleeve, the installation sleeve is threadedly connected to the measuring cylinder 2, a fixing plate is fitted on the installation sleeve, the fixing plate is bolted to the base 4, and a sealing gasket is provided between the fixing plate and the base 4.

[0029] Specifically, the fixing plate and the base 4 are connected by bolts, and a sealing gasket is provided between the fixing plate and the base 4 to effectively seal the gap, reduce the leakage of heat and flue gas inside the furnace, and the standardized flange interface has good compatibility, which facilitates component replacement, on-site assembly and later upgrades. The sealing gasket can also offset the impact of the vibration of the furnace body 1 and prevent the measuring cylinder 2 from shifting.

[0030] In one embodiment of the present invention, a tube body 5 is provided on the detection end of the measuring cylinder 2, the tube body 5 is threadedly connected to the mounting sleeve, and a blocking component is provided on the tube body 5 to shield the detection end of the measuring cylinder 2.

[0031] Specifically, the blocking component is used to shield the detection end of the measuring cylinder 2. When open, it conducts light and collects temperature normally. Temperature measurement can be flexibly started and stopped according to production process and testing requirements, adapting to different operation stages. When closed, it blocks the measuring channel 14, reducing heat leakage from the furnace and the protective atmosphere, stabilizing the temperature and atmosphere inside the furnace, and ensuring accurate and reliable temperature measurement data.

[0032] In one embodiment of the present invention, the blocking component is a valve 51, which is either a ball valve or a lift valve. By rotating the valve 51, the detection end of the measuring cylinder 2 is allowed to leak out of the tested product 3 inside the furnace body 1.

[0033] Specifically, by rotating valve 51, the detection end of measuring cylinder 2 is exposed to the product 3 being measured inside furnace body 1. When valve 51 is closed, it blocks the lens / light path and stops temperature measurement; when it is open, it conducts light path and collects temperature normally. Temperature measurement can be flexibly started and stopped according to production process and testing requirements, adapting to different operating stages. Valve 51 adopts a central light transmission structure to protect infrared thermometer 6 and extend the service life of the entire device.

[0034] In one embodiment of the present invention, a detection lens is provided on the tube body 5, and the detection lens is located between the valve 51 and the measuring cylinder 2.

[0035] Specifically, the detection lens is located between valve 51 and measuring cylinder 2, which can block high-temperature flue gas, dust, splashes and corrosive gases in the furnace, prevent them from entering the measuring cylinder 2 and contaminating or burning the infrared thermometer, greatly reduce the instrument failure rate and extend its service life. At the same time, it plays a sealing role, reducing heat leakage and atmosphere loss in the furnace and maintaining the furnace temperature.

[0036] The present invention also includes a non-contact method for measuring the temperature of metals at high temperatures. Several measuring channels 14 are opened on the side wall of the furnace body 1. Measuring cylinders 2 are inserted and installed on the measuring channels 14. The measuring end of the measuring cylinder 2 is positioned opposite to the product 3 to be measured inside the furnace body 1. The distance between the measuring end and the product 3 to be measured is 5-15cm. In this embodiment, it is more preferred that the distance between the measuring end and the product 3 to be measured is 8cm. The measuring opening 21 with a flared structure is covered on both sides of the metal ingot product to be measured. This avoids interference from the high temperature and radiant heat inside the furnace caused by the distance being too close, and also prevents the infrared signal from attenuating due to the distance being too far, so that the temperature measurement value is stable and the error is small. An infrared thermometer 6 is installed on the outside of the furnace body 1, and the measuring head of the infrared thermometer 6 is aligned with the measuring cylinder 2. The infrared thermometer 6 performs non-contact temperature detection on the product 3 to be measured that is exposed at the measuring cylinder 2.

[0037] Specifically, the infrared thermometer 6 uses a multi-wavelength temperature detection industrial camera to detect the temperature of the surface of the product 3 being tested. It adopts a non-contact infrared temperature measurement method, so the temperature measuring component does not come into direct contact with the high-temperature metal ingot, thus avoiding scratching or contaminating the product 3 being tested, and at the same time, it does not interfere with the normal production process and product forming state inside the furnace.

[0038] Usage process The measuring cylinder 2 is threaded onto the mounting sleeve, which is then inserted into the base 4. The fixing plate and the base 4 are connected by bolts to fix the measuring cylinder 2 onto the furnace body 1. A sealing gasket is installed between the fixing plate and the base 4 to ensure the sealing effect of the measuring cylinder 2 in the measuring channel 14, preventing heat leakage and maintaining the temperature of the furnace body 1. The tube body 5 is installed on the mounting sleeve, so that the infrared thermometer 6 is positioned opposite the tube body 5. The infrared thermometer 6 performs non-contact temperature detection on the tested product 3 leaking from the measuring cylinder 2. There is no need to install an additional temperature measuring device inside the furnace body 1. This can maintain the surface temperature of the aluminum ingot while preventing heat leakage inside the furnace, resulting in better metal ingot forming. The use of non-contact temperature detection can improve its performance and lifespan.

[0039] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A non-contact metal temperature measurement structure for high-temperature applications, characterized in that, include: A base is provided on the furnace body, on which a measuring channel is provided. The base is located on the outer wall of the furnace body, and a measuring cylinder is provided on the base. The measuring end of the measuring cylinder passes through the measuring channel and is positioned opposite to the product to be measured inside the furnace body. A measuring component is disposed on the outer wall of the furnace body. The measuring component includes a measuring frame, on which an infrared thermometer is disposed. The measuring head of the infrared thermometer is disposed opposite to the detection end of the measuring cylinder. The infrared thermometer is used to perform non-contact temperature detection on the product to be tested disposed opposite to the measuring cylinder.

2. The high-temperature metal temperature non-contact measurement structure as described in claim 1, characterized in that, The measuring frame includes a fixed frame and a movable frame. The fixed frame is set on the outer wall of the furnace body, and the infrared thermometer is set on the movable frame. The fixed frame and the movable frame are connected by an adjusting component.

3. The high-temperature metal temperature non-contact measurement structure as described in claim 2, characterized in that, The fixed frame is evenly provided with multiple waist-shaped grooves, which are arranged in a straight line. The straight line is parallel to the central axis of the measuring cylinder. The movable frame is provided with multiple fixing holes that match the waist-shaped grooves. The fixing holes on the movable frame are connected to the waist-shaped grooves on the fixed frame by bolts.

4. The high-temperature metal temperature non-contact measurement structure as described in claim 1, characterized in that, The furnace body includes a main body, a furnace wall steel plate is provided on the outer side wall of the main body, the base is welded to the furnace wall steel plate, a heat insulation layer is provided on the inner side of the main body, the measuring channel passes through the furnace wall steel plate, the main body and the heat insulation layer, a support sleeve is provided on the measuring channel, and the measuring cylinder passes through the support sleeve.

5. The high-temperature metal temperature non-contact measurement structure as described in claim 1, characterized in that, The measuring cylinder has a measuring opening at its measuring end. The measuring opening has a funnel-shaped structure, and the edge diameter of the measuring opening is larger than the diameter of the measuring end.

6. The high-temperature metal temperature non-contact measurement structure as described in claim 1, characterized in that, The measuring cylinder has a mounting sleeve at its detection end. The mounting sleeve is threaded to the measuring cylinder. A fixing plate is fitted onto the mounting sleeve. The fixing plate is bolted to the base. A sealing gasket is provided between the fixing plate and the base.

7. The high-temperature metal temperature non-contact measurement structure as described in claim 6, characterized in that, The measuring cylinder has a tube body at its detection end, which is threadedly connected to the mounting sleeve. The tube body has a blocking component that is used to shield the detection end of the measuring cylinder.

8. The high-temperature metal temperature non-contact measurement structure as described in claim 7, characterized in that, The blocking component is a valve, which can be either a ball valve or a lift valve. By rotating the valve, the detection end of the measuring cylinder is allowed to leak out of the furnace body to test the product.

9. The high-temperature metal temperature non-contact measurement structure as described in claim 8, characterized in that, The tube body is equipped with a detection lens, which is located between the valve and the measuring cylinder.

10. A non-contact method for measuring the temperature of metals at high temperatures, characterized in that, Several measurement channels are opened on the side wall of the furnace body. Measurement cylinders are inserted and installed in the measurement channels. The measuring end of the measuring cylinder is positioned opposite to the product being tested inside the furnace body. The distance between the measuring end and the product being tested is 5-15cm. An infrared thermometer is installed on the outside of the furnace body, with the measuring head of the infrared thermometer aligned with the measuring cylinder. The infrared thermometer performs non-contact temperature detection on the product being tested that is exposed at the measuring cylinder.

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