Heating device for metal material experiment

Abstract

The utility model provides a heating device for metal material experiment, which comprises a power controller, a transformer and a temperature controller, the power controller is connected with the primary side of the transformer through a lead, a metal sample is connected with the secondary side of the transformer through a lead to form a loop, and a temperature measuring element is contacted with the metal sample. The temperature measuring element is connected with the temperature controller through a signal line, and the temperature controller is connected with the power controller through a signal line. According to the utility model, the current is directly adopted to pass through the metal sample to heat the metal sample, so that the temperature measuring element cannot be heated, the temperature measuring element can accurately measure the temperature, and after the temperature measuring element transmits the measured temperature of the metal sample to the temperature controller, the temperature of the metal sample can be accurately measured. Through close cooperation of the temperature controller, the power controller and the transformer, appropriate current is applied to the metal sample, the heating temperature rise is fast, and the temperature control precision is higher.

Description

Technical Field

[0001] The utility model belongs to the technical field of electro-controlled heating of metal materials, and particularly relates to a heating device for metal material experiments. Background Art

[0002] Synchrotron radiation light sources have significant advantages in rapidly obtaining material phase types, strain distributions, dislocation densities, etc., and are very suitable for in-situ observation of phase, residual strain, and lattice changes during the heating process of metal materials. Currently, the main method for heating metal materials is electromagnetic induction heating, that is, by generating an alternating strong magnetic field to heat metal specimens. However, this heating method has obvious deficiencies in in-situ experiments: namely, electromagnetic induction heating is difficult to achieve precise temperature control, which is not conducive to the development and control of experiments. Among them, electromagnetic induction heating is difficult to achieve precise temperature control because the basis of temperature control is accurate temperature measurement. Currently, the most direct and accurate way of temperature measurement is a thermocouple, and the thermocouple has a metrological inspection standard. However, electromagnetic induction heating will heat both the metal specimen and the thermocouple simultaneously, thus affecting the measurement results of the thermocouple. Therefore, electromagnetic induction heating can only adopt other temperature measurement methods, making the temperature measurement less accurate and thus affecting the accuracy of temperature control. Content of the Utility Model

[0003] Therefore, the utility model provides a heating device for metal material experiments, which can solve the technical problems that electromagnetic induction heating is difficult to achieve precise temperature control and is not conducive to the development and control of experiments.

[0004] To solve the above problems, the utility model provides a heating device for metal material experiments, including: a power controller, a transformer, and a temperature controller. The power controller is connected to the primary side of the transformer through a wire. The metal specimen is connected to the secondary side of the transformer through a wire and forms a circuit. The temperature measuring element is in contact with the metal specimen, and the temperature measuring element is connected to the temperature controller through a signal wire. The temperature controller is connected to the power controller through a signal wire.

[0005] In some embodiments, the power controller and the temperature controller are respectively connected to a power switch through wires, and the power controller and the temperature controller are connected in parallel.

[0006] In some embodiments, a power indicator is provided on the line between the power switch and the temperature controller.

[0007] In some embodiments, the power controller is connected to the line between the temperature controller and the power switch through a wire and forms a first node and a second node. A fuse is provided on the line between the first node and the power switch or on the line between the second node and the power switch.

[0008] In some embodiments, a control indicator light is provided on the line between the power controller and the primary side of the transformer.

[0009] In some embodiments, the heating device for metal material experiments further includes a housing, and the power controller, the transformer, and the temperature controller are all located inside the housing.

[0010] In some embodiments, a plurality of rollers are provided at the bottom of the housing.

[0011] In some embodiments, the number of the rollers is four, and the four rollers are respectively close to the four corners of the bottom of the housing, and at least two of the rollers in the same row are universal wheels.

[0012] In some embodiments, a self-locking component is provided on the universal wheel.

[0013] In some embodiments, a grasping structure is provided on the housing.

[0014] A heating device for metal material experiments provided by the present utility model has the following beneficial effects:

[0015] After the temperature controller and the power controller are powered on, the temperature of the metal specimen is measured by the temperature measuring element and transmitted to the temperature controller. The temperature controller outputs a control signal to the power controller according to the obtained temperature of the metal specimen. Then, the output of the power controller is adjusted by the transformer to an appropriate current and applied to the metal specimen, so as to directly perform Joule heating on the metal specimen. Since the present application directly uses current to pass through the metal specimen for heating, the temperature measuring element will not be heated, so that the temperature measuring element can accurately measure the temperature. After the temperature measuring element transmits the measured temperature of the metal specimen to the temperature controller, through the close cooperation of the temperature controller, the power controller, and the transformer, an appropriate current is applied to the metal specimen, not only the heating temperature rise is fast, but also the temperature control accuracy is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and for those of ordinary skill in the art, without creative efforts, other implementation drawings can be obtained according to the provided drawings.

[0017] Figure 1 is the circuit diagram of the heating device for metal material experiments according to the embodiment of the present utility model;

[0018] Figure 2 is the structural schematic diagram of the heating device for metal material experiments according to the embodiment of the present utility model.

[0019] The reference numerals are shown as follows:

[0020] 1. Power controller; 2. Transformer; 3. Thermostat; 4. Power switch; 5. Power indicator light; 6. Fuse; 7. Control indicator light; 8. Housing; 9. Roller; 10. Self-locking component; 11. Groove; 12. Door lock. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way limits the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0022] In the description of the present invention, it should be understood that the orientation terms such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. usually indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. Without contrary explanation, these orientation terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the protection scope of the present invention; the orientation terms "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0023] For the sake of convenience of description, spatial relative terms such as "above...", "on the upper side of...", "on the upper surface of...", "above-mentioned", etc. can be used here to describe the spatial positional relationship between a device or feature shown in the drawings and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described in the drawings of the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "on the upper side of other devices or structures" will be positioned as "below other devices or structures" or "under other devices or structures" afterwards. Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding explanations are made for the spatial relative descriptions used here.

[0024] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is merely for the convenience of distinguishing the corresponding components. Without additional statements, these terms have no special meaning, so it should not be construed as a limitation on the protection scope of the present utility model.

[0025] Referring jointly to Figure 1 and Figure 2 As shown, according to an embodiment of the present utility model, there is provided a heating device for metal material experiments, including: a power controller 1, a transformer 2, and a temperature controller 3. The power controller 1 is connected to the primary side of the transformer 2 through a wire. A metal specimen (not shown in the figure) is connected to the secondary side of the transformer 2 through a wire and forms a circuit. A temperature measuring element (not shown in the figure) is in contact with the metal specimen, and the temperature measuring element is connected to the temperature controller 3 through a signal wire. The temperature controller 3 is connected to the power controller 1 through a signal wire.

[0026] In this technical solution, after the temperature controller 3 and the power controller 1 are powered on, the temperature of the metal specimen is measured by the temperature measuring element and transmitted to the temperature controller 3. The temperature controller 3 outputs a control signal to the power controller 1 through calculation based on the obtained temperature of the metal specimen. Then, the output of the power controller 1 is adjusted to an appropriate current by the transformer 2 and applied to the metal specimen, thereby directly performing Joule heating on the metal specimen. Since this application directly uses current to pass through the metal specimen for heating, the temperature measuring element will not be heated, so that the temperature measuring element can accurately measure the temperature. After the temperature measuring element transmits the measured temperature of the metal specimen to the temperature controller 3, through the close cooperation of the temperature controller 3, the power controller 1, and the transformer 2, an appropriate current is applied to the metal specimen, not only with a fast heating temperature rise, but also with a higher temperature control accuracy. Among them, the temperature measuring element can be a thermocouple or a temperature sensor.

[0027] It should be noted that there is also a way of heating by heating element radiation for the method of heating metal materials under a light source. This heating method also has obvious deficiencies in in-situ experiments: heating the specimen by heating element radiation requires heat preservation in a closed space, and the temperature is transferred to the metal specimen in this closed space. On the one hand, it will cause the equipment to be too large in volume and mass, increasing the loading and unloading difficulty; on the other hand, the low heating rate of this method will waste valuable light source machine time. The heating device for metal material experiments of the present application only includes a small number of components with small volumes such as a power controller 1, a transformer 2, and a temperature controller 3. It not only meets the requirements of the experimental bench, is small in volume, light in mass, and does not block light, but also solves the problem that the heating by heating element radiation causes the equipment to be too large in volume and mass, increasing the loading and unloading difficulty. At the same time, the present application heats the metal specimen by directly passing an electric current through it, with a fast heating temperature rise, so it also solves the problem that the low heating rate of heating by heating element radiation wastes valuable light source machine time. Among them, the model of the transformer 2 is DBK300VA, from 200V to 1.5V, with a size of about 170mm×190mm×140mm, the model of the power controller 1 is NG1G-60A-YX, and the temperature controller 3 is a PID temperature controller, with a size of about 96mm×96mm. It can be understood that since the resistance of the metal specimen is extremely small, almost a short circuit, giving a very small voltage (about 1V), the current will be very large (80A), so the heating method of the present application can also be called a low-voltage high-current Joule heating method.

[0028] Specifically, when the temperature measuring element measures the temperature of the metal specimen and transmits it to the temperature controller 3, the temperature controller 3 will compare the set temperature with the temperature feedback by the temperature measuring element, use the PID algorithm to obtain a difference value and convert it into a 4-20mA signal and transmit it to the power controller 1. The power controller 1 adjusts the output power according to this signal, and the transformer 2 is responsible for reducing the large voltage output by the temperature controller 3 to an appropriate voltage (0-1.5V) in proportion and transmitting it to the load, so as to adjust to an appropriate current and apply it to the metal specimen for direct Joule heating. For example, if the set temperature is 600°C, when the temperature feedback by the temperature measuring element is low, the temperature controller 3 will output a very large signal, causing the power controller 1 to output at full power; when the temperature feedback by the temperature measuring element is close to 600°C, the temperature controller 3 will reduce the output signal, thus restricting power heating; when the temperature feedback by the temperature measuring element exceeds 600°C, the temperature controller 3 will cut off the output. Finally, through PID regulation, an output signal will be determined, and at this time, the power controller 1 outputs at a constant power, keeping the temperature stable at 600°C.

[0029] See Figure 1 As shown, the power controller 1 and the temperature controller 3 are respectively connected to the power switch 4 through wires, and the power controller 1 and the temperature controller 3 are connected in parallel.

[0030] In this embodiment, after the power controller 1 is connected in parallel with the temperature controller 3, the power controller 1 and the temperature controller 3 can be powered on simultaneously by only connecting one external circuit. It can be understood that only one plug can be provided on the heating device and connected to the power controller 1 and the temperature controller 3. When the plug is inserted into an external power socket and the power switch 4 is closed, the power controller 1 and the temperature controller 3 can be powered on simultaneously.

[0031] See Figure 1 As shown, a power indicator light 5 is provided on the line between the power switch 4 and the temperature controller 3.

[0032] In this technical solution, when the heating device for metal material experiments of the present application is connected to an external power supply and the power switch 4 is closed, the power indicator light 5 will light up, indicating that the heating device is normally powered on and heating experiments can be carried out. It should be noted that after the power indicator light 5 lights up, if the temperature controller 3 does not send a signal to the power controller 1, the connection between the power controller 1 and the transformer 2 is in an open state, and only when the temperature controller 3 sends a signal to the power controller 1, the connection between the power controller 1 and the transformer 2 is in a closed state.

[0033] As a specific implementation manner, a control indicator light 7 is provided on the line between the power controller 1 and the primary side of the transformer 2.

[0034] In this embodiment, after the power indicator light 5 lights up and the temperature controller 3 also starts to send a signal to the power controller 1, the control indicator light 7 lights up, and the experimenter can know whether the metal specimen is in the state of being powered on and heated by observing the control indicator light 7.

[0035] See Figure 1 As shown, the power controller 1 is connected to the line between the temperature controller 3 and the power switch 4 through a wire to form a first node and a second node. A fuse 6 is provided on the line between the first node and the power switch 4 or on the line between the second node and the power switch 4.

[0036] In this technical solution, the fuse 6 is a safety device, which is responsible for melting and disconnecting the circuit when the current is too large, so as to protect the circuit formed by the temperature controller 3, the power controller 1, the transformer 2 and the metal specimen.

[0037] See Figure 2As shown, the heating device for metal material experiments of the present application further includes a housing 8. The power controller 1, the transformer 2, and the temperature controller 3 are all located inside the housing 8, so that the housing 8 protects the power controller 1, the transformer 2, and the temperature controller 3. It should also be noted that two wiring terminals extend outward from the inside of the housing 8. The two wiring terminals are used to connect to both ends of the metal specimen so that the secondary side of the transformer 2 and the metal specimen form an electrical connection loop. The housing 8 has a side door, and a door lock 12 is provided on the side door. The door lock 12 is used to open or close the side door. The temperature controller 3, the power switch 4, the power indicator 5, the fuse 6, and the control indicator 7 are all displayed on the side door.

[0038] See Figure 2 As shown, a plurality of rollers 9 are provided at the bottom of the housing 8. The setting of the rollers 9 enables the heating device of the present application to have a moving function, and its position can be changed according to actual needs.

[0039] As a specific implementation manner, the number of the rollers 9 is four. The four rollers 9 are respectively close to the four corners of the bottom of the housing 8, and at least two rollers 9 in the same row are universal wheels. The setting of the universal wheels makes the heating device of the present application more flexible when turning during the moving process.

[0040] See Figure 2 As shown, a self-locking component 10 is provided on each universal wheel. The self-locking component 10 can lock the universal wheel, so that the heating device can be kept stationary during the experiment.

[0041] More specifically, a grasping structure is provided on the housing 8. The setting of the grasping structure facilitates the experimenter to push the heating device for moving or to lift the heating device for loading and transporting. The grasping structure can be a push handle (not shown in the figure) fixed on the housing 8, or a groove 11 formed on the housing 8.

[0042] Those skilled in the art can easily understand that, on the premise of no conflict, the advantageous technical features of the above-mentioned various methods can be freely combined and superimposed.

[0043] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. The above is only the preferred implementation manner of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and modifications can still be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A heating device for metal material experiments, characterized in that, It includes a power controller (1), a transformer (2), and a temperature controller (3). The power controller (1) is connected to the primary side of the transformer (2) through a wire. The metal specimen is connected to the secondary side of the transformer (2) through a wire and forms a loop. The temperature measuring element is in contact with the metal specimen, and the temperature measuring element is connected to the temperature controller (3) through a signal wire. The temperature controller (3) is connected to the power controller (1) through a signal wire.

2. The heating device for metal material experiments according to claim 1, characterized in that, The power controller (1) and the temperature controller (3) are respectively connected to the power switch (4) through wires, and the power controller (1) is in parallel with the temperature controller (3).

3. The heating device for metal material experiments according to claim 2, characterized in that, A power indicator light (5) is provided on the line between the power switch (4) and the temperature controller (3).

4. The heating device for metal material experiments according to claim 2, characterized in that, The power controller (1) is connected to the line between the temperature controller (3) and the power switch (4) through a wire and forms a first node and a second node. A fuse (6) is provided on the line between the first node and the power switch (4) or on the line between the second node and the power switch (4).

5. The heating device for metal material experiments according to claim 1, characterized in that, A control indicator light (7) is provided on the line between the power controller (1) and the primary side of the transformer (2).

6. The heating device for metal material experiments according to any one of claims 1 to 5, characterized in that, It further includes a housing (8), and the power controller (1), the transformer (2), and the temperature controller (3) are all inside the housing (8).

7. The heating device for metal material experiments according to claim 6, characterized in that, A plurality of rollers (9) are provided at the bottom of the housing (8).

8. The heating device for metal material experiments according to claim 7, wherein, The number of the rollers (9) is four. The four rollers (9) are respectively close to the four corners of the bottom of the housing (8), and at least two of the rollers (9) in the same row are universal wheels.

9. The heating device for metal material experiments according to claim 8, characterized in that, A self-locking assembly (10) is provided on the universal wheel.

10. The heating device for metal material experiments according to claim 6, characterized in that, A grasping structure is provided on the housing (8).

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