CN113481358A - Online monitoring device and detection method for furnace temperature of motor core heat treatment tunnel furnace - Google Patents
Online monitoring device and detection method for furnace temperature of motor core heat treatment tunnel furnace Download PDFInfo
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 71
- 238000012806 monitoring device Methods 0.000 title claims abstract description 43
- 238000001514 detection method Methods 0.000 title description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 106
- 239000000463 material Substances 0.000 claims abstract description 60
- 230000007246 mechanism Effects 0.000 claims abstract description 51
- 238000000034 method Methods 0.000 claims abstract description 35
- 238000012544 monitoring process Methods 0.000 claims abstract description 35
- 238000007669 thermal treatment Methods 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 101
- 238000009413 insulation Methods 0.000 claims description 90
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- 239000010425 asbestos Substances 0.000 claims description 26
- 229910052895 riebeckite Inorganic materials 0.000 claims description 26
- 230000008569 process Effects 0.000 claims description 21
- 238000009529 body temperature measurement Methods 0.000 claims description 14
- 239000011229 interlayer Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
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- 238000004519 manufacturing process Methods 0.000 abstract description 23
- 238000005516 engineering process Methods 0.000 abstract description 2
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- 229910000976 Electrical steel Inorganic materials 0.000 description 2
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- 241001391944 Commicarpus scandens Species 0.000 description 1
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- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
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- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D11/00—Process control or regulation for heat treatments
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- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
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Abstract
The invention discloses an online monitoring device for the furnace temperature of a tunnel furnace for heat treatment of a motor iron core, which comprises a temperature measuring mechanism and a material frame for placing the motor iron core, wherein the motor iron core is placed in the material frame in a stacking mode, the temperature measuring mechanism is placed at the side part of the motor iron core, a temperature measuring contact of the temperature measuring mechanism is arranged in a stacked motor iron core or between stacked motor iron cores, the material frame with the temperature measuring mechanism and the stacked motor iron cores arranged is integrally hung on a feeding roller way of the tunnel furnace and carries out heat treatment on the motor iron cores along with the operation of the tunnel furnace, and the temperature measuring mechanism monitors the real-time temperature online. The problem of production technology among the prior art can't on-line monitoring motor core thermal treatment tunnel furnace whole section actual temperature value is solved, the accurate monitoring of the interior thermal treatment temperature of tunnel furnace has been realized, the temperature of providing guarantee for motor core thermal treatment and the stacking volume of iron core has guaranteed motor core's final performance when high-efficient production. The method also discloses an online monitoring method for the furnace temperature of the tunnel furnace for the heat treatment of the motor iron core.
Description
Technical Field
The invention belongs to the technical field of furnace temperature detection, and particularly relates to a device and a method for monitoring the furnace temperature of a tunnel furnace for heat treatment of a motor core.
Background
The non-oriented silicon steel is mainly used for preparing iron cores of various motors, but the processing stress brought by the iron core processing process can deteriorate the electromagnetic performance of the non-oriented silicon steel and further influence the final performance of the motors, so that the iron core heat treatment is a mode for guaranteeing the performance of the motors which is universal in the industry, and the accurate control of the heat treatment temperature is also the key for guaranteeing the heat treatment effect of the iron cores of the motors.
The tunnel furnace has the characteristics of continuous, batch and high-efficiency production, and is widely applied to the heat treatment of the motor iron core, the conventional tunnel furnace temperature detection mode is to measure by thermocouples fixedly arranged on the furnace wall of each furnace section, and the measured value is difficult to truly reflect the actual temperature of the whole heat treatment process, which is not beneficial to setting the heat treatment process parameters.
In addition, because the iron core stacking inevitably has great influence on the temperature field in the tunnel furnace, the iron core stacking amount is too large due to the pursuit of high efficiency, so that the temperature at different parts is not uniform, and the actual heat treatment effect of the motor iron core is further influenced; the less stacking amount of the iron cores can cause reduction of production efficiency and waste of energy consumption. Therefore, accurate online detection of the furnace temperature of the tunnel furnace for heat treatment of the motor iron core is a necessary premise for ensuring efficient production of the motor iron core and stable performance.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the on-line monitoring device for the furnace temperature of the motor iron core heat treatment tunnel furnace, which has a simple structure and is convenient to use, solves the problem that the production process in the prior art cannot monitor the actual temperature value of the whole furnace section of the motor iron core heat treatment tunnel furnace on line, and realizes the accurate monitoring of the heat treatment temperature in the tunnel furnace; the invention also provides an online monitoring method for the furnace temperature of the tunnel furnace for the heat treatment of the motor iron core, which guarantees the temperature of the heat treatment of the motor iron core and the setting of the stacking amount of the iron core, and further guarantees the final performance of the motor iron core during high-efficiency production.
In order to achieve the purpose, the technical scheme of the invention is as follows: the utility model provides a motor core thermal treatment tunnel furnace temperature on-line monitoring device, includes temperature measurement mechanism and the material frame that is used for placing motor core, motor core becomes the stack form and places in the material frame, and temperature measurement mechanism places the lateral part that is located motor core at the material frame, and temperature measurement mechanism's temperature measurement contact is arranged in becoming the motor core of buttress or between the motor core stack, will arrange that the material frame of temperature measurement mechanism and motor core stack is whole to be hung to tunnel furnace material loading roll table and carry out motor core thermal treatment along with the tunnel furnace operation, and temperature measurement mechanism on-line monitoring real-time temperature.
Furthermore, the temperature measuring mechanism comprises a furnace temperature tracker, a data processor, a temperature measuring thermocouple and a heat insulation protection mechanism, wherein the furnace temperature tracker and the data processor are positioned in the heat insulation protection mechanism, a temperature measuring contact of the temperature measuring thermocouple is arranged in a material frame for placing a motor iron core, and the other end of the temperature measuring thermocouple is connected with the furnace temperature tracker.
Furthermore, the temperature measuring mechanism also comprises an HMI picture, the HMI picture is positioned outside the furnace, the furnace temperature tracker is connected with the data processor, and the data processor transmits the online monitored data to the HMI picture outside the furnace in a wireless signal mode in real time.
Furthermore, a plurality of temperature thermocouple interfaces are arranged on the furnace temperature tracker, each temperature thermocouple comprises a plurality of temperature measuring contacts, and the temperature measuring contacts are dispersedly arranged at different positions of the material frame, such that the temperature of the surface of the motor iron core, the layers of the motor iron core stack and the temperature of furnace gas can be detected.
Furthermore, the heat insulation protection mechanism comprises a shell, a water jacket and a heat insulation layer, the furnace temperature tracker and the data processor are installed in the water jacket, the water jacket is placed in the shell, the heat insulation layer is arranged around the water jacket, one side of the heat insulation layer is attached to the outer wall of the water jacket, and the other side of the heat insulation layer is attached to the inner wall of the shell.
Furthermore, the water jacket comprises a water jacket I and a water jacket II, a U-shaped cavity for placing the furnace temperature tracker and the data processor is arranged on the water jacket I, the water jacket II is of a cover-shaped structure matched and connected with the water jacket I, and a channel for the temperature thermocouple to pass through is arranged on the water jacket II.
Furthermore, the water jacket I and the water jacket II are both in a cavity structure, cold water is filled in the cavities of the water jacket I and the water jacket II, and the water jacket I and the water jacket II are stainless steel containers.
Furthermore, the insulating layer includes asbestos insulating layer and nanometer thermal insulation felt, and the asbestos insulating layer cladding is in the outside of water jacket, packs nanometer thermal insulation felt between the inner wall of asbestos insulating layer and shell, and the temperature thermocouple runs through asbestos insulating layer, nanometer thermal insulation felt and shell and extends to outside thermal insulation protection machanism.
The invention also relates to an online monitoring method for the furnace temperature of the motor iron core heat treatment tunnel furnace, which is based on the online monitoring device for the furnace temperature of the motor iron core heat treatment tunnel furnace, and the monitoring method comprises the following steps:
step a, assembling a furnace temperature online monitoring device;
b, hoisting the assembled furnace temperature online monitoring device into a motor iron core heat treatment material frame, and dispersedly arranging temperature measuring contacts of temperature measuring thermocouples at different positions of the upper part, the lower part, the left part and the right part of the material frame to detect the surface of the motor iron core, the interlayer of a motor iron core stack and the temperature of furnace gas;
c, putting the material frame loaded with the furnace temperature online monitoring device and the motor iron core stack into the furnace, starting a computer of the heat treatment tunnel furnace, and carrying out real-time online furnace temperature monitoring on an HMI picture after the signals are connected;
and d, after the whole process is completed according to the set heat treatment process of the motor iron core, hoisting the furnace temperature online monitoring device to the next round of stacking material frame of the electric core iron core to be put into the furnace for heat treatment, rearranging the temperature-measuring thermocouple contacts, and realizing the new round of furnace temperature online monitoring only by filling cold water into the water jacket again.
Further, the furnace temperature on-line monitoring device assembling process includes:
1) connecting and keeping the data processor and the furnace temperature tracker relatively fixed, installing the data processor and the furnace temperature tracker into a U-shaped cavity of the water jacket I, connecting and keeping the temperature thermocouple and an interface of the furnace temperature tracker relatively firm, and covering the temperature thermocouple with a water jacket II after bending the temperature thermocouple carefully;
2) paving a nanometer heat insulation felt and an asbestos heat insulation layer on the bottom and the side wall of a shell box body of the heat insulation protection mechanism in sequence;
3) placing the assembled water jacket assembly into a heat insulation protection mechanism, positioning and fixing the water jacket assembly according to the actual size, and extending a temperature thermocouple out of the heat insulation protection mechanism through an asbestos heat insulation layer, a nano heat insulation felt and a shell;
4) and (3) filling cold water into the water jacket, sealing, sequentially paving an asbestos heat insulation layer and a nanometer heat insulation felt, and covering an upper cover of the shell of the heat insulation protection mechanism.
The technical scheme adopted by the invention has the advantages that:
1. the invention solves the problem that the production process in the prior art can not monitor the actual temperature value of the whole furnace section of the tunnel furnace for the heat treatment of the motor iron core on line, realizes the accurate monitoring of the heat treatment temperature in the tunnel furnace, provides guarantee for the setting of the heat treatment temperature of the motor iron core and the stacking amount of the iron core, and further ensures the final performance of the motor iron core during high-efficiency production.
2. The on-line monitoring device for the furnace temperature of the motor core heat treatment tunnel furnace can monitor the temperature in the motor core stacks and the temperature between the motor core stacks in real time, realize the on-line monitoring of the furnace temperature of the whole furnace section of the motor core heat treatment tunnel furnace, draw a process temperature curve in the whole heat treatment process and judge whether the set requirement of the iron core heat treatment process is met.
3. The on-line monitoring device and the monitoring method for the furnace temperature of the motor iron core heat treatment tunnel furnace can realize on-line monitoring of the furnace temperature of the whole furnace section of the motor iron core heat treatment tunnel furnace, can draw temperature field cloud charts of different parts of the whole tunnel furnace and realize real-time diagnosis of the furnace condition of the motor iron core heat treatment tunnel furnace; the stacking amount of the iron core in the material frame during subsequent production can be fed back and guided, and efficient production is realized on the premise of ensuring the heat treatment performance of the iron core; the on-line monitoring device can be recycled.
Drawings
The invention is described in further detail below with reference to the following figures and detailed description:
FIG. 1 is a schematic structural diagram of an on-line furnace temperature monitoring device according to the present invention;
FIG. 2 is a schematic plan view of the arrangement of temperature measuring points in a material frame of the on-line furnace temperature monitoring device of the invention;
FIG. 3 is a schematic view of the arrangement of temperature measuring points in a material frame of the on-line furnace temperature monitoring device according to the present invention;
FIG. 4 is a schematic diagram of the arrangement of temperature measuring points in a material frame of the furnace temperature on-line monitoring device of the invention from the right.
The labels in the above figures are respectively: 1. a furnace temperature tracker; 2. a data processor; 3. a temperature thermocouple; 4. a motor core; 5. material frame; 6. a temperature measuring mechanism; 7. a housing; 8. a water jacket; 81. a water jacket I; 82. a water jacket II; 9. a thermal insulation layer; 91. an asbestos insulation layer; 92. a nano heat insulation felt.
Detailed Description
In the present invention, it is to be understood that the term "length"; "Width"; "Up"; "Down"; "front"; "Back"; "left"; "Right"; "vertical"; "horizontal"; "Top"; "bottom" "inner"; "outer"; "clockwise"; "counterclockwise"; "axial"; "planar direction"; "circumferential" and the like indicate orientations or positional relationships that are based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the indicated device or element must have a particular orientation; constructed and operative in a particular orientation and therefore should not be construed as limiting the invention.
As shown in fig. 1 to 4, the tunnel furnace temperature online monitoring device for the heat treatment of the motor core comprises a temperature measuring mechanism 6 and a material frame 5 for placing the motor core 4, wherein the motor core 4 is placed in the material frame 5 in a stacking mode, the temperature measuring mechanism is placed on the side portion of the material frame 5 located on the motor core 4, a temperature measuring contact of the temperature measuring mechanism is arranged in the stacked motor core 4 or between the stacked motor cores, the material frame 5 on which the temperature measuring mechanism 6 and the stacked motor cores 4 are arranged is integrally hung on a feeding roller way of the tunnel furnace and carries out heat treatment on the motor core along with the operation of the tunnel furnace, and the temperature measuring mechanism monitors the real-time temperature online. The problem of production technology among the prior art can't on-line monitoring motor core thermal treatment tunnel furnace whole section actual temperature value is solved, the accurate monitoring of the interior thermal treatment temperature of tunnel furnace has been realized, provides the guarantee for the temperature of motor core thermal treatment and the stacking volume setting of iron core, and then motor core's final performance when having guaranteed high-efficient production.
The temperature measuring mechanism comprises a furnace temperature tracker 1, a data processor 2, a temperature thermocouple 3 and a heat insulation protection mechanism, wherein the furnace temperature tracker 1 and the data processor 2 are located in the heat insulation protection mechanism, a temperature measuring contact of the temperature thermocouple 3 is arranged in a material frame for placing a motor iron core, the other end of the temperature thermocouple 3 is connected with the furnace temperature tracker 1, and the furnace temperature tracker 1 is provided with a plurality of temperature thermocouple interfaces and can record the temperatures of a plurality of detection positions at the same time.
The temperature measuring mechanism further comprises an HMI picture, the HMI picture is located outside the furnace, the furnace temperature tracker 1 is connected with the data processor 2, the data processor is connected with the HMI picture outside the furnace in a wireless signal mode, and the data processor 2 transmits the online monitored data to the HMI picture outside the furnace in a wireless signal mode in real time. The data processor 2 can send the temperature data recorded by the furnace temperature tracker out of the furnace in a wireless signal form to a specially received HMI picture for displaying, and can help production personnel to quickly diagnose the furnace condition and guide the stacking amount of the iron core in the material frame during subsequent production according to the online monitoring result.
The furnace temperature tracker 1 is provided with a plurality of temperature thermocouple 3 interfaces, the temperature thermocouple 3 comprises a plurality of temperature measuring contacts, and the temperature measuring contacts are dispersedly arranged at different positions of the upper part, the lower part, the left part and the right part of the material frame to detect the temperature of the surface of the motor iron core, the layers of the motor iron core stack and furnace gas. The detection precision of the temperature thermocouple 3 is +/-0.25% T, wherein T is the detection temperature.
The heat insulation protection mechanism comprises a shell 7, a water jacket 8 and a heat insulation layer 9, the furnace temperature tracker 1 and the data processor 2 are installed in the water jacket 8, the water jacket 8 is placed in the shell 7, the heat insulation layer 9 is arranged around the water jacket 8, one side of the heat insulation layer 9 is attached to the outer wall of the water jacket 8, and the other side of the heat insulation layer 9 is attached to the inner wall of the shell 7.
The water jacket 8 comprises a water jacket I81 and a water jacket II 82, a U-shaped cavity for placing the furnace temperature tracker 1 and the data processor 2 is arranged on the water jacket I81, the size of the U-shaped cavity is designed according to the sizes of the furnace temperature tracker and the data processing device, the water jacket II 82 is of a cover-shaped structure matched and connected with the water jacket I81, and a channel for the temperature thermocouple 3 to pass through is arranged on the water jacket II 82. The water jacket I81 and the water jacket II 82 are both in a cavity structure, cold water is filled in the cavity of the water jacket I81 and the cavity of the water jacket II 82, and the water jacket I81 and the water jacket II 82 are stainless steel containers.
The heat insulation layer 9 comprises an asbestos heat insulation layer 91 and a nanometer heat insulation felt 92, the asbestos heat insulation layer 91 is coated on the outer side of the water jacket 8, the nanometer heat insulation felt 92 is filled between the asbestos heat insulation layer 91 and the inner wall of the shell 7, and the temperature thermocouple 3 penetrates through the asbestos heat insulation layer, the nanometer heat insulation felt and the shell and extends out of the heat insulation protection mechanism. The nano heat insulation felt has better heat insulation effect, so the nano heat insulation felt is tightly attached to the inner wall of the shell 7, but the nano heat insulation felt has high cost and is a vulnerable part which is easy to break. The water jacket belongs to a hard part, and if the water jacket is directly connected with the nanometer heat insulation felt, the nanometer heat insulation felt is easily damaged; in addition, the furnace temperature on-line monitoring device is reusable, water jacket is required to be refilled when the furnace temperature on-line monitoring device is used every time, the water jacket is required to be drawn out when the water jacket is refilled, the nano heat insulation felt is easily damaged in the process of taking out the water jacket and installing the water jacket back, in order to avoid the phenomenon, an asbestos heat insulation layer 91 is filled between the nano heat insulation felt and the water jacket, asbestos is easy to fill, low in cost and not easy to damage, and when the water jacket is refilled, the asbestos heat insulation layer 91 is not damaged in the process of taking out the water jacket and installing the water jacket back.
In order to prevent the furnace temperature tracker 1 and the data processor 2 from being affected by high temperature in the furnace to cause damage or inaccurate test results, the invention is provided with a heat insulation protection mechanism, a water jacket is filled with cold water for cooling, the furnace temperature tracker 1 and the data processor 2 are placed in the water jacket, a shell 7 is a metal shell, and an asbestos heat insulation layer 91 and a nano heat insulation felt 92 are laid between the water jacket and the inner wall of the shell. The influence of high temperature in an external furnace on the furnace temperature tracker 1 and the data processor 2 is isolated, the temperature measurement accuracy of the furnace temperature tracker 1 and the data processor 2 is ensured, and the furnace temperature tracker 1 and the data processor 2 are protected.
Based on the device for monitoring the furnace temperature of the motor core heat treatment tunnel furnace, the invention also relates to a method for monitoring the furnace temperature of the motor core heat treatment tunnel furnace, which comprises the following steps: installing a furnace temperature tracker → connecting a data processing device → installing a temperature thermocouple → installing a heat insulation protection device → lifting to a motor iron core heat treatment material frame → arranging a thermocouple temperature measurement contact → putting the material frame into a furnace → online monitoring of furnace temperature.
The method specifically comprises the following steps:
step a, assembling an on-line monitoring device for furnace temperature, and loading a motor iron core heat treatment material frame according to a loading mode during normal production, namely placing a motor iron core 4 in a material frame 5 in a stacking mode;
the furnace temperature on-line monitoring device assembling process comprises:
1) connecting and keeping the data processor 2 and the furnace temperature tracker 1 relatively fixed, installing the data processor into a U-shaped cavity of the water jacket I81, connecting and keeping the temperature thermocouple 3 and an interface of the furnace temperature tracker relatively firm, and covering the water jacket II 82 after the temperature thermocouple 3 is bent cautiously;
2) sequentially paving a nanometer heat insulation felt 92 and an asbestos heat insulation layer 93 on the bottom and the side wall of a box body of a shell 7 of the heat insulation protection mechanism;
3) placing the assembled water jacket assembly into a heat insulation protection mechanism, positioning and fixing the water jacket assembly according to the actual size, and extending a temperature thermocouple 3 to the outside of the heat insulation protection mechanism through an asbestos heat insulation layer, a nano heat insulation felt and a shell;
4) and (3) filling cold water into the water jacket, sealing, sequentially paving an asbestos heat insulation layer and a nanometer heat insulation felt, and covering an upper cover of the shell 7 of the heat insulation protection mechanism.
B, hoisting the assembled furnace temperature online monitoring device into a motor iron core heat treatment material frame, and dispersedly arranging temperature measuring contacts of a temperature measuring thermocouple 3 at different positions of the upper part, the lower part, the left part and the right part of the material frame to detect the surface of the motor iron core, the interlayer of a motor iron core stack and the temperature of furnace gas;
c, putting the material frame 5 loaded with the furnace temperature online monitoring device and the motor iron core stack into the furnace, starting a computer of the heat treatment tunnel furnace, and carrying out real-time online furnace temperature monitoring on an HMI picture after the signals are connected; the data processor 2 can send the temperature data recorded by the furnace temperature tracker out of the furnace in the form of wireless signals to be displayed on the HMI specifically received outside the furnace, and can help the production personnel to quickly diagnose the furnace condition and guide the stacking quantity of the iron core in the material frame during the subsequent production according to the online monitoring result
And d, after the whole process is completed according to the set heat treatment process of the motor iron core, hoisting the furnace temperature online monitoring device to the next round of stacking material frame of the electric core iron core to be put into the furnace for heat treatment, rearranging the temperature-measuring thermocouple contacts, and realizing the new round of furnace temperature online monitoring only by filling cold water into the water jacket again.
The temperature measuring points of the temperature measuring contacts of the temperature measuring thermocouple 3 arranged in the material frame 5 comprise a point A, a point B, a point C, a point D, a point E, a point F, a point G, a point H and a point K, the point A, the point B and the point C are arranged at the top of the material frame 5 and are located above the motor iron core stack, and the point A, the point B and the point C are located in the middle of the material frame 5 in the length direction and are evenly arranged in the width direction of the material frame 5. D point, E point, F point are located the middle part position on 5 direction of height of material frame, and evenly set up along the width direction of material frame 5, and D point inserts and lies in the middle part of motor core stack in the motor core stack, and F point inserts and lies in the middle part of motor core stack in the opposite side motor core stack, and E point arranges between two adjacent motor core stacks. G point, H point and K point are located the lower part position of material frame 5, and evenly set up along the width direction of material frame 5, and G point inserts and lies in the bottom of motor core stack in the motor core stack, and K point inserts and lies in the bottom of motor core stack in the opposite side motor core stack, and H point arranges between two adjacent motor core stacks.
Because the material frame 5 runs from left to right in the tunnel furnace according to the arrow direction in fig. 2, the motor iron core stack reaching the rightmost side of the material frame 5 is arranged at the forefront, only the motor iron core stack at the rightmost side of the material frame 5 needs to be provided with the points D, E, F, G, H and K, and the points D, E, F, G, H and K are arranged at the forefront of the running of the material frame 5, and the motor iron core stack at the back can pass through the position. The specific points represent temperatures: and (B) point A: furnace gas temperature at the left side of the hearth; and B, point: furnace gas temperature at the middle side of the hearth; and C, point: furnace gas temperature at the right side of the hearth; and D, point: the temperature at the high position of the iron core stack 1/2 on the left side of the hearth; e, point: the high temperature of the iron core stack 1/2 at the middle side of the hearth; and F point: the high temperature of the iron core stacks 1/2 on the right side of the hearth; and point G: the temperature of the bottom of the iron core stack on the left side of the hearth; h, point: the bottom temperature of the middle iron core stack of the hearth; and point K: and the temperature of the bottom of the iron core stack on the right side of the hearth.
Ideally, the temperatures of the points A, B, C, D, E, F, G, H and K should be the same, and the heat treatment effect of the points is the best, but the temperatures of the points A, B, C, D, E, F, G, H and K are difficult to be the same in actual production. Placing motor core 4 stack shape material frame 5 and moving in the tunnel furnace, the temperature in the motor core stack must be different with the temperature between the motor core stack, so D point, F point, G point and K point set up the temperature that is used for detecting in the motor core stack, E point and H point set up the temperature that is used for detecting between the motor core stack, E point and H point lie in between the adjacent motor core stack in the middle of the rightmost side, whether the temperature of observing between the motor core stack is blockked by other motor core stacks.
Therefore, the on-line monitoring device for the furnace temperature of the motor iron core heat treatment tunnel furnace can monitor the temperature in the motor iron core stacks and the temperature among the motor iron core stacks in real time, realize the on-line monitoring of the furnace temperature of the whole furnace section of the motor iron core heat treatment tunnel furnace, draw a process temperature curve of the whole heat treatment process and judge whether the set requirement of the iron core heat treatment process is met.
The on-line monitoring device and the monitoring method for the furnace temperature of the motor iron core heat treatment tunnel furnace can realize on-line monitoring of the furnace temperature of the whole furnace section of the motor iron core heat treatment tunnel furnace, can draw temperature field cloud charts of different parts of the whole tunnel furnace and realize real-time diagnosis of the furnace condition of the motor iron core heat treatment tunnel furnace; the stacking amount of the iron core in the material frame during subsequent production can be fed back and guided, and efficient production is realized on the premise of ensuring the heat treatment performance of the iron core; the on-line monitoring device can be recycled.
By using the online monitoring method for the furnace temperature of the motor iron core heat treatment tunnel furnace, on one hand, the online monitoring of the furnace temperature can be carried out on the upper, lower, left, middle and right different parts of the tunnel furnace hearth, the diagnosis of the furnace condition of the annealing furnace is realized, and data support is provided for the equipment maintenance of production personnel; on the other hand, the actual temperature of different parts of the iron core stack can be monitored on line, whether the heat treatment temperature of the iron core meets the set process requirement or not is judged, and data support is provided for the stacking amount of the iron core in the subsequent production.
The invention is described above with reference to the accompanying drawings, it is obvious that the specific implementation of the invention is not limited by the above-mentioned manner, and it is within the scope of the invention to adopt various insubstantial modifications of the technical solution of the invention or to apply the concept and technical solution of the invention directly to other occasions without modification.
Claims (10)
1. The utility model provides a motor core thermal treatment tunnel furnace temperature on-line monitoring device which characterized in that: including temperature measurement mechanism (6) and material frame (5) that are used for placing motor core (4), motor core (4) become the stack form and place in material frame (5), temperature measurement mechanism places the lateral part that is located motor core (4) at material frame (5), and temperature measurement contact of temperature measurement mechanism arranges in motor core (4) that becomes the buttress or between the motor core stack, and material frame (5) that will arrange temperature measurement mechanism (6) and motor core (4) stack wholly hangs to tunnel furnace material loading roll table on and carry out motor core thermal treatment along with the tunnel furnace operation, temperature measurement mechanism on-line monitoring real-time temperature.
2. The furnace temperature on-line monitoring device of the motor iron core heat treatment tunnel furnace of claim 1, characterized in that: the temperature measuring mechanism comprises a furnace temperature tracker (1), a data processor (2), a temperature thermocouple (3) and a heat insulation protection mechanism, wherein the furnace temperature tracker (1) and the data processor (2) are located in the heat insulation protection mechanism, a temperature measuring contact of the temperature thermocouple (3) is arranged in a material frame for placing a motor iron core, and the other end of the temperature thermocouple (3) is connected with the furnace temperature tracker (1).
3. The furnace temperature on-line monitoring device of the motor iron core heat treatment tunnel furnace of claim 2, characterized in that: the temperature measuring mechanism further comprises an HMI picture, the HMI picture is located outside the furnace, the furnace temperature tracker (1) is connected with the data processor (2), and the data processor (2) transmits online monitored data to the HMI picture outside the furnace in a wireless signal mode in real time.
4. The furnace temperature on-line monitoring device of the motor iron core heat treatment tunnel furnace as claimed in claim 2 or 3, characterized in that: the furnace temperature tracker (1) is provided with a plurality of temperature thermocouple (3) interfaces, the temperature thermocouple (3) comprises a plurality of temperature measuring contacts, and the temperature measuring contacts are dispersedly arranged at different positions of the upper part, the lower part, the left part and the right part of the material frame to detect the temperature of the surface of the motor iron core, the layers of the motor iron core stack and furnace gas.
5. The furnace temperature on-line monitoring device of the motor iron core heat treatment tunnel furnace as claimed in claim 2 or 3, characterized in that: the heat insulation protection mechanism comprises a shell (7), a water jacket (8) and a heat insulation layer (9), the furnace temperature tracker (1) and the data processor (2) are installed in the water jacket (8), the water jacket (8) is placed in the shell (7), the heat insulation layer (9) is arranged around the water jacket (8), one side of the heat insulation layer (9) is attached to the outer wall of the water jacket (8), and the other side of the heat insulation layer (9) is attached to the inner wall of the shell (7).
6. The furnace temperature on-line monitoring device of the motor iron core heat treatment tunnel furnace of claim 5, characterized in that: the water jacket (8) comprises a water jacket I (81) and a water jacket II (82), a U-shaped cavity for placing the furnace temperature tracker (1) and the data processor (2) is formed in the water jacket I (81), the water jacket II (82) is of a cover-shaped structure matched and connected with the water jacket I (81), and a channel for the temperature thermocouple (3) to pass through is formed in the water jacket II (82).
7. The furnace temperature on-line monitoring device for the motor iron core heat treatment tunnel furnace as claimed in claim 6, characterized in that: the water jacket I (81) and the water jacket II (82) are both in a cavity structure, cold water is filled in the cavities of the water jacket I (81) and the water jacket II (82), and the water jacket I (81) and the water jacket II (82) are stainless steel containers.
8. The furnace temperature on-line monitoring device for the motor iron core heat treatment tunnel furnace as claimed in claim 6, characterized in that: the heat insulation layer (9) comprises an asbestos heat insulation layer (91) and a nanometer heat insulation felt (92), the asbestos heat insulation layer (91) is coated on the outer side of the water jacket (8), the nanometer heat insulation felt (92) is filled between the asbestos heat insulation layer (91) and the inner wall of the shell (7), and the temperature thermocouple (3) penetrates through the asbestos heat insulation layer, the nanometer heat insulation felt and the shell and extends out of the heat insulation protection mechanism.
9. The method for monitoring the furnace temperature of the motor iron core heat treatment tunnel furnace is characterized by comprising the following steps of: the on-line monitoring device for the furnace temperature of the motor iron core heat treatment tunnel furnace according to any one of claims 1 to 8, wherein the monitoring method comprises the following steps:
step a, assembling a furnace temperature online monitoring device;
b, hoisting the assembled furnace temperature online monitoring device into a motor iron core heat treatment material frame, and dispersedly arranging temperature measuring contacts of a temperature measuring thermocouple (3) at different positions of the upper part, the lower part, the left part and the right part of the material frame to detect the surface of the motor iron core, the interlayer of a motor iron core stack and the temperature of furnace gas;
c, putting the material frame (5) loaded with the furnace temperature online monitoring device and the motor iron core stack into the furnace, starting a computer of the heat treatment tunnel furnace, and carrying out real-time online furnace temperature monitoring on an HMI picture after the signals are connected;
and d, after the whole process is completed according to the set heat treatment process of the motor iron core, hoisting the furnace temperature online monitoring device to the next round of stacking material frame of the electric core iron core to be put into the furnace for heat treatment, rearranging the temperature-measuring thermocouple contacts, and realizing the new round of furnace temperature online monitoring only by filling cold water into the water jacket again.
10. The on-line monitoring method for the furnace temperature of the motor iron core heat treatment tunnel furnace as claimed in claim 9, characterized in that: the furnace temperature on-line monitoring device assembling process comprises:
1) connecting and keeping the data processor (2) and the furnace temperature tracker (1) relatively fixed, installing the data processor into a U-shaped cavity of the water jacket I (81), connecting and keeping the temperature thermocouple (3) and an interface of the furnace temperature tracker relatively firm, carefully bending the temperature thermocouple (3), and covering the water jacket II (82);
2) sequentially paving a nanometer heat insulation felt (92) and an asbestos heat insulation layer (93) on the bottom and the side wall of a box body of a shell (7) of the heat insulation protection mechanism;
3) the assembled water jacket assembly is placed in a heat insulation protection mechanism, positioning and fixing are carried out according to the actual size, and a temperature thermocouple (3) penetrates through the asbestos heat insulation layer, the nanometer heat insulation felt and the shell and extends out of the heat insulation protection mechanism;
4) and (3) filling cold water into the water jacket, sealing, sequentially paving an asbestos heat insulation layer and a nanometer heat insulation felt, and covering an upper cover of a heat insulation protection mechanism shell (7).
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