Melt temperature transmitter

Abstract

The utility model relates to the technical field of transmitters, and discloses a melt temperature transmitter, which comprises a temperature measuring probe, an end welding threaded rod and a shell, a power supply is arranged in the shell, the power supply adopts a wide voltage input range design, the shell is made of stainless steel, the temperature measuring probe is arranged at one end of the end welding threaded rod, and the end welding threaded rod is arranged in the shell. According to the melt temperature transmitter, through the combined design of the temperature measuring probe, the thermocouple and the signal processing circuit board, when the melt temperature is detected, the analog signal of the temperature can be quickly processed and converted, the temperature detection response speed is high, the detection precision is high, and the reliability is high. Meanwhile, the temperature control system is not easily interfered by the external environment, and through the combined design of the aviation plug and the temperature control system, the calculated heating power adjustment value can be sent to the external temperature control system in time after the corresponding heating power adjustment value is calculated according to the preset temperature control algorithm.

Description

Technical Field

[0001] The utility model relates to the technical field of transmitters, in particular to a melt temperature transmitter. Background Art

[0002] In high-temperature industrial production processes such as metal smelting, glass manufacturing, and ceramic firing, the control of melt temperature is crucial to product quality and production efficiency.

[0003] Traditional temperature measurement methods, such as infrared sensors, can provide temperature data, but they have problems such as slow response speed, low accuracy, and susceptibility to environmental interference. In addition, existing temperature control systems usually lack the ability to monitor and respond quickly to dynamic changes in melt temperature, making it difficult for the production process to proceed stably. Therefore, the development of a high-performance melt temperature transmitter and its temperature control system is of great significance to improving the automation level and economic benefits of industrial production. Utility Model Content

[0004] To solve the problems of slow response speed, low precision, and susceptibility to environmental interference in the above traditional temperature measurement equipment. In addition, the existing temperature control system usually lacks the ability to monitor and respond quickly to the dynamic changes of melt temperature in real time, making it difficult for the production process to proceed stably. The utility model implements the problem through the following technical solutions: a melt temperature transmitter, including a temperature measurement probe, an end-welded threaded rod, and a shell. A power supply is installed inside the shell. The power supply adopts a wide voltage input range design. The shell is made of stainless steel. The temperature measurement probe is installed at one end of the end-welded threaded rod. A thermocouple is fixedly installed inside the end-welded threaded rod. The thermocouple is fixedly connected to the temperature measurement probe;

[0005] A signal processing circuit board is installed inside the shell, and the signal processing circuit board is electrically connected to the thermocouple. The shell is installed at the other end of the end-welded threaded rod.

[0006] Furthermore, a lower end cover is threadedly connected to one end of the housing close to the end-welded threaded rod, a connecting seat is fixedly installed inside the lower end cover, and the inner side surface of the connecting seat corresponds to the side of the signal processing circuit board;

[0007] A through hole is provided at the center of the connection base, and the thermocouple passes through the through hole and is connected to the signal processing circuit board.

[0008] Furthermore, a hexagonal bolt is installed at one end of the end-welded threaded rod away from the temperature measuring probe, and the hexagonal bolt is threadedly connected to the connecting seat.

[0009] Furthermore, an upper end cover is threadedly connected to one end of the housing away from the lower end cover, an aviation plug is fixedly installed inside the upper end cover, and the aviation plug is electrically connected to the signal processing circuit board.

[0010] Furthermore, the signal processing circuit board is provided with a signal processing module, an analog-to-digital converter, a microprocessor, and a communication interface. The signal processing module is used to process the temperature analog signal collected by the thermocouple. The microprocessor has a built-in digital signal processor (DSP), and the communication interface adopts a standard industrial communication protocol.

[0011] Furthermore, the signal processing module is a low noise amplifier and a filter circuit.

[0012] A temperature control system based on a melt temperature transmitter, the temperature control system comprising a power regulation module and a human-machine interface;

[0013] The power adjustment module is used to adjust the output power of the heating element according to the received heating power adjustment value;

[0014] The human-machine interface is used to display real-time data and control parameters of melt temperature;

[0015] The aviation plug is electrically connected to the temperature control system.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The melt temperature transmitter, through the combined design of the temperature measuring probe, the thermocouple and the signal processing circuit board, can quickly process and convert the analog signal of the temperature when detecting the melt temperature. The temperature detection response speed is fast and the detection accuracy is high. At the same time, it is not easily affected by the external environment. Through the combined design of the aviation plug and the temperature control system, after calculating the corresponding heating power adjustment value according to the preset temperature control algorithm, the calculated heating power adjustment value can be sent to the external temperature control system in time, so that the power regulation module can adjust the output power of the heating element according to the received heating power adjustment value, so as to realize the real-time monitoring of the dynamic change of the melt temperature and the response capability of rapid adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a stereogram of the overall structure of the melt temperature transmitter of the utility model;

[0019] Figure 2 This is a three-dimensional diagram of the internal disassembled structure of the melt temperature transmitter of the utility model;

[0020] Figure 3 This is a schematic diagram of a specific implementation of the melt temperature transmitter of the utility model;

[0021] Figure 4 This is a flow chart of the combination of the melt temperature transmitter and the temperature control system of the utility model.

[0022] In the figure: 1. Temperature measuring probe; 2. End-welded threaded rod; 3. Hexagon; 4. Lower end cover; 5. Shell; 6. Upper end cover; 7. Aviation plug; 8. Thermocouple; 9. Connecting socket; 10. Signal processing circuit. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] The embodiment of the melt temperature transmitter is as follows:

[0025] See also Figure 1-Figure 4 A melt temperature transmitter includes a temperature measuring probe 1, an end-welded threaded rod 2, and a shell 5. A power supply is installed inside the shell 5. The power supply adopts a wide voltage input range design. The power supply provides a stable working power supply for each module. The shell 5 is made of stainless steel and is used to protect a signal processing circuit board 10. The temperature measuring probe 1 is installed at one end of the end-welded threaded rod 2. A thermocouple 8 is fixedly installed inside the end-welded threaded rod 2. The thermocouple 8 is fixedly connected to the temperature measuring probe 1. The temperature measuring probe 1 measures the temperature and transmits the temperature to the thermocouple 8. The thermocouple 8 is used to sense the temperature of the medium to be measured.

[0026] A signal processing circuit board 10 is installed inside the shell 5. The signal processing circuit board 10 is electrically connected to the thermocouple 8. The shell 5 is installed at the other end of the end-welded threaded rod 2. The signal processing circuit board 10 is provided with a signal processing module, an analog-to-digital converter, a microprocessor, and a communication interface. The signal processing module is a low-noise amplifier and a filtering circuit. The signal processing module is used to process the temperature analog signal collected by the thermocouple 8, and the analog-to-digital converter (ADC) is used to convert the processed analog signal into a digital signal.

[0027] The microprocessor has a built-in digital signal processor (DSP), and the microprocessor (MCU) is used to receive the digital signal converted by the analog-to-digital converter and calculate the corresponding heating power adjustment value according to the preset temperature control algorithm. The communication interface adopts a standard industrial communication protocol, and the communication interface is used to send the calculated heating power adjustment value to the external temperature control system through the aviation plug 7.

[0028] The end of the outer shell 5 close to the end-welded threaded rod 2 is threadedly connected to the lower end cover 4, and a connecting seat 9 is fixedly installed inside the lower end cover 4. The end of the end-welded threaded rod 2 away from the temperature measuring probe 1 is installed with a hexagonal 3, and the hexagonal 3 is threadedly connected to the connecting seat 9.

[0029] The inner surface of the connecting seat 9 corresponds to the side of the signal processing circuit board 10 and is used to fix the signal processing circuit board 10; a through hole is opened at the center of the connecting seat 9, and the thermocouple 8 passes through the through hole to connect with the signal processing circuit board 10.

[0030] An upper end cover 6 is threadedly connected to one end of the housing 5 away from the lower end cover 4 . An aviation plug 7 is fixedly installed inside the upper end cover 6 . The aviation plug 7 is electrically connected to the signal processing circuit board 10 .

[0031] A temperature control system based on a melt temperature transmitter, the temperature control system includes a power adjustment module and a human-machine interface; an aviation plug 7 is electrically connected to the temperature control system, which is used to send the processed electrical signal in the melt temperature transmitter to the temperature control system, and the power adjustment module is used to adjust the output power of the heating element according to the received heating power adjustment value; the human-machine interface is used to display the real-time data and control parameters of the melt temperature, allowing the operator to set the temperature control parameters, such as setting the heating power adjustment value and the output power of the heating element.

[0032] The melt temperature transmitter is used in the valve body, and the temperature measuring probe 1 is inserted into the position of the valve body outlet, so that the temperature measuring probe 1 contacts the medium in the outlet, and the temperature measuring probe 1 cooperates with the thermocouple 8 to detect the temperature of the medium flowing through the valve body.

[0033] Working principle of melt temperature transmitter:

[0034] The temperature measuring probe 1 of the melt temperature transmitter is brought into contact with the medium to be measured, the temperature is measured by the temperature measuring probe 1, and the temperature is transmitted to the thermocouple 8, the thermocouple 8 transmits the collected temperature signal to the signal processing circuit board 10, the signal processing module processes the temperature analog signal collected by the thermocouple 8, and then the analog-to-digital converter (ADC) converts the processed analog signal into a digital signal, and then the microprocessor (MCU) receives the digital signal converted by the analog-to-digital converter and calculates the corresponding heating power adjustment value according to the preset temperature control algorithm, and the communication interface sends the calculated heating power adjustment value to the external temperature control system through the aviation plug 7.

[0035] The power regulation module in the temperature control system adjusts the output power of the heating element according to the received heating power adjustment value, and the temperature control parameters can also be set by the operator through the human-machine interface.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A melt temperature transmitter, comprising a temperature measuring probe (1), an end-welded threaded rod (2), and a housing (5), characterized in that: The temperature measuring probe (1) is installed at one end of the end-welded threaded rod (2), a thermocouple (8) is fixedly installed inside the end-welded threaded rod (2), and the thermocouple (8) is fixedly connected to the temperature measuring probe (1); A signal processing circuit board (10) is installed inside the housing (5), and the signal processing circuit board (10) is electrically connected to the thermocouple (8). The housing (5) is installed at the other end of the end-welded threaded rod (2).

2. A melt temperature transmitter according to claim 1, characterized in that: The end of the housing (5) close to the end-welded threaded rod (2) is threadedly connected to a lower end cover (4), a connecting seat (9) is fixedly installed inside the lower end cover (4), and the inner side surface of the connecting seat (9) corresponds to the side edge of the signal processing circuit board (10); A through hole is provided at the center of the connection seat (9), and the thermocouple (8) passes through the through hole to be connected to the signal processing circuit board (10).

3. A melt temperature transmitter according to claim 2, characterized in that: A hexagonal bolt (3) is installed at one end of the end-welded threaded rod (2) away from the temperature measuring probe (1), and the hexagonal bolt (3) is threadedly connected to the connecting seat (9).

4. A melt temperature transmitter according to claim 2 or 3, characterized in that: An upper end cover (6) is threadedly connected to one end of the housing (5) away from the lower end cover (4); an aviation plug (7) is fixedly installed inside the upper end cover (6); and the aviation plug (7) is electrically connected to the signal processing circuit board (10).

5. A melt temperature transmitter according to claim 4, characterized in that: The signal processing circuit board (10) is provided with a signal processing module, an analog-digital converter, a microprocessor and a communication interface.

6. A melt temperature transmitter according to claim 5, characterized in that: The signal processing module is a low noise amplifier and a filter circuit.

7. A temperature control system based on a melt temperature transmitter, using a melt temperature transmitter as claimed in claim 6, characterized in that: The temperature control system includes a power regulation module and a human-machine interface; The power adjustment module is used to adjust the output power of the heating element according to the received heating power adjustment value; The human-machine interface is used to display real-time data and control parameters of melt temperature; The aviation plug (7) is electrically connected to the temperature control system.

Images