CN221225398U - Temperature control and regulation system adopting two temperature measurement point feedback signals - Google Patents
Temperature control and regulation system adopting two temperature measurement point feedback signals Download PDFInfo
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- CN221225398U CN221225398U CN202323288855.2U CN202323288855U CN221225398U CN 221225398 U CN221225398 U CN 221225398U CN 202323288855 U CN202323288855 U CN 202323288855U CN 221225398 U CN221225398 U CN 221225398U
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- 238000009529 body temperature measurement Methods 0.000 title claims description 4
- 239000007788 liquid Substances 0.000 claims abstract description 57
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 238000009825 accumulation Methods 0.000 claims abstract description 12
- 230000001105 regulatory effect Effects 0.000 claims abstract description 8
- 230000010355 oscillation Effects 0.000 abstract description 4
- 239000000110 cooling liquid Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model discloses a temperature control and regulation system adopting feedback signals of two temperature measuring points, which comprises a laser, a buffer tank and a cold accumulation water tank, wherein a liquid return temperature sensor and a second proportional valve are arranged in a pipeline between the laser and the cold accumulation water tank, a first proportional valve is arranged in a pipeline between the cold accumulation water tank and the buffer tank, the second proportional valve is communicated with the buffer tank, the buffer tank is provided with the buffer tank temperature sensor, the buffer tank is connected with an output pump, a liquid supply temperature sensor and a manual regulating valve are arranged in a pipeline between the output pump and the laser, and the first proportional valve, the second proportional valve, the liquid return temperature sensor, the liquid supply temperature sensor and the buffer tank temperature sensor are respectively and electrically connected with a processor. The utility model improves the hysteresis problem of temperature feedback, reduces the oscillation amplitude of the liquid supply temperature and improves the temperature control precision of the liquid supply temperature through double-stage signal feedback temperature control.
Description
Technical Field
The utility model relates to the technical field of laser system temperature control, in particular to a temperature control and regulation system adopting feedback signals of two temperature measuring points.
Background
The temperature regulation control technology in the existing laser system mainly adopts single-stage signal feedback (only 1 liquid supply temperature signal is collected), as shown in fig. 1, when the liquid supply temperature collected by a temperature signal sensor rises, the liquid supply temperature is fed back to a PID algorithm, the liquid supply temperature is compared with a set target temperature through the PID algorithm, analysis and processing are carried out, a control signal is output to a driving actuator, at the moment, the liquid mixing state (cold source > heat source) of a proportion regulating valve is changed, and the temperature of cooling liquid output to a laser is reduced. After the liquid supply temperature acquired by the temperature signal sensor is reduced from high, comparing and analyzing the liquid supply temperature with the set target temperature through a PID algorithm, outputting a control signal to a driving actuator, changing the liquid mixing state (heat source > cold source) of the proportional control valve at the moment, and improving the temperature of the cooling liquid output to the laser. Through PID analysis and calculation, an actuator (controlling two proportional regulating valves to mix cooling liquid and realizing the temperature control) is driven to control and output the temperature of the cooling liquid. The temperature control model has a remarkable disadvantage when used for a dynamic temperature control and adjustment system, and the output temperature control has a large periodic oscillation rule. When the liquid supply temperature signal collected by the temperature signal sensor changes, the temperature change rate in the temperature control system of the dynamic system is faster, and the temperature change direction has the characteristic of inertial motion. The feedback signal delivered creates a severe hysteresis after the temperature output to the laser deviates from the set target temperature.
Disclosure of utility model
The utility model aims to provide a temperature control and regulation system adopting two temperature measuring point feedback signals, which is used for solving the problems that in the prior art, single-stage signal feedback leads to output temperature control to have larger periodic oscillation, and the transmitted feedback signal generates serious hysteresis after the temperature output to a laser deviates from the set target temperature.
The utility model solves the problems by the following technical proposal:
The utility model provides an adopt temperature control governing system of two temperature measurement point feedback signals, includes laser instrument, buffer tank and cold-storage water tank, be provided with back liquid temperature sensor and second proportional valve in the pipeline between laser instrument and the cold-storage water tank, pipeline between cold-storage water tank and the buffer tank is provided with first proportional valve, the second proportional valve with the buffer tank intercommunication, the buffer tank is provided with buffer tank temperature sensor, the output pump is connected to the buffer tank, be provided with feed liquid temperature sensor and manual governing valve in the pipeline between output pump and the laser instrument, first proportional valve, second proportional valve, back liquid temperature sensor, feed liquid temperature sensor and buffer tank temperature sensor are the electricity respectively and are connected with the treater.
Working principle:
The output pump pumps cooling liquid in the buffer tank to enter the laser, the cooling liquid returns to the cold storage water tank and the buffer tank after absorbing heat, the processor respectively collects the temperature of the buffer tank and the temperature of liquid supply through the buffer tank temperature sensor and the liquid supply temperature sensor, and the opening of the first proportional valve and the opening of the second proportional valve are calculated and controlled through a PID algorithm, so that the cooling liquid (cold water) in the cold storage water tank and the return liquid (hot water) in the pipeline are controlled to mix in the buffer tank, and the temperature is controlled. Comprising two stages of control:
a) First-stage signal feedback temperature control
The processor collects temperature signals in the buffer tank through the buffer tank temperature sensor and compares the temperature signals with the set temperature. When the temperature in the buffer tank is detected to deviate from the set temperature, the opening degree of the first proportional valve and the second proportional regulating valve is calculated and driven through a PID algorithm, and the temperature in the buffer tank is regulated, so that the liquid supply temperature is treated in advance.
B) Second-stage signal feedback temperature control
After the temperature (first stage) in the buffer tank is adjusted in advance, when the output water flows to a liquid supply temperature detection point (a liquid supply temperature sensor), the temperature change amplitude can be reduced greatly. At the moment, the signals of the liquid supply temperature sensor are collected, and the liquid supply temperature is controlled for the second time by comparing the signals with the set temperature and calculating the opening of the first proportional valve and the opening of the second proportional valve through a PID algorithm. The advantage of the liquid supply temperature after the two-stage control is that the proportional control valve can be controlled in time to make adjustment according to the tiny variation of the liquid supply temperature, thereby realizing the accurate control of the liquid supply temperature and effectively improving the temperature control precision of the liquid supply temperature.
Through doublestage signal feedback accuse temperature, improved the hysteresis problem of temperature feedback, reduced the confession liquid temperature and vibrate the range, improved the accuse temperature precision of confession liquid temperature. The temperature control precision is improved from +/-2 ℃ to +/-1 ℃, and simultaneously the hysteresis is also reduced synchronously.
Further, a pressure sensor and/or a flowmeter are respectively arranged on a pipeline between the laser and the cold accumulation water tank and a pipeline between the buffer tank and the laser.
Compared with the prior art, the utility model has the following advantages:
(1) The utility model improves the hysteresis problem of temperature feedback and reduces the oscillation amplitude of the liquid supply temperature through double-stage signal feedback temperature control.
(2) The utility model improves the temperature control precision of the liquid supply temperature from +/-2 ℃ to +/-1 ℃.
Drawings
FIG. 1 is a schematic diagram of a prior art single stage signal feedback temperature control;
FIG. 2 is a system block diagram of the present utility model;
Fig. 3 is a schematic diagram of a two-stage signal feedback temperature control scheme according to the present utility model.
Detailed Description
The present utility model will be described in further detail with reference to examples, but embodiments of the present utility model are not limited thereto.
Example 1:
Referring to fig. 2 and 3, a temperature control adjusting system adopting feedback signals of two temperature measuring points comprises a laser, a buffer tank and a cold accumulation water tank, wherein a liquid return temperature sensor and a second proportional valve are arranged in a pipeline between the laser and the cold accumulation water tank, a first proportional valve is arranged in a pipeline between the cold accumulation water tank and the buffer tank, the second proportional valve is communicated with the buffer tank, the buffer tank is provided with the buffer tank temperature sensor, the buffer tank is connected with an output pump, a liquid supply temperature sensor and a manual adjusting valve are arranged in a pipeline between the output pump and the laser, and the first proportional valve, the second proportional valve, the liquid return temperature sensor, the liquid supply temperature sensor and the buffer tank temperature sensor are respectively and electrically connected with a processor.
Working principle:
The output pump pumps cooling liquid in the buffer tank to enter the laser, the cooling liquid returns to the cold storage water tank and the buffer tank after absorbing heat, the processor respectively collects the temperature of the buffer tank and the temperature of liquid supply through the buffer tank temperature sensor and the liquid supply temperature sensor, and the opening of the first proportional valve and the opening of the second proportional valve are calculated and controlled through a PID algorithm, so that the cooling liquid (cold water) in the cold storage water tank and the return liquid (hot water) in the pipeline are controlled to mix in the buffer tank, and the temperature is controlled. Comprising two stages of control:
a) First-stage signal feedback temperature control
The processor collects temperature signals in the buffer tank through the buffer tank temperature sensor and compares the temperature signals with the set temperature. When the temperature in the buffer tank is detected to deviate from the set temperature, the opening degree of the first proportional valve and the second proportional regulating valve is calculated and driven through a PID algorithm, and the temperature in the buffer tank is regulated, so that the liquid supply temperature is treated in advance.
B) Second-stage signal feedback temperature control
After the temperature (first stage) in the buffer tank is adjusted in advance, when the output water flows to a liquid supply temperature detection point (a liquid supply temperature sensor), the temperature change amplitude can be reduced greatly. At the moment, the signals of the liquid supply temperature sensor are collected, and the liquid supply temperature is controlled for the second time by comparing the signals with the set temperature and calculating the opening of the first proportional valve and the opening of the second proportional valve through a PID algorithm. The advantage of the liquid supply temperature after the two-stage control is that the proportional control valve can be controlled in time to make adjustment according to the tiny variation of the liquid supply temperature, thereby realizing the accurate control of the liquid supply temperature and effectively improving the temperature control precision of the liquid supply temperature. The proportional valve opening is calculated by the processor according to the PID algorithm in the prior art, and is not described in detail herein.
Through doublestage signal feedback accuse temperature, improved the hysteresis problem of temperature feedback, reduced the confession liquid temperature and vibrate the range, improved the accuse temperature precision of confession liquid temperature. The temperature control precision is improved from +/-2 ℃ to +/-1 ℃, and simultaneously the hysteresis is also reduced synchronously.
Further, a pressure sensor and/or a flowmeter are respectively arranged on a pipeline between the laser and the cold accumulation water tank and a pipeline between the buffer tank and the laser.
Although the utility model has been described herein with reference to the above-described illustrative embodiments thereof, the foregoing embodiments are merely preferred embodiments of the present utility model, and it should be understood that the embodiments of the present utility model are not limited to the above-described embodiments, and that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the scope and spirit of the principles of this disclosure.
Claims (2)
1. The temperature control and regulation system adopting feedback signals of two temperature measuring points is characterized by comprising a laser, a buffer tank and a cold accumulation water tank, wherein a liquid return temperature sensor and a second proportional valve are arranged in a pipeline between the laser and the cold accumulation water tank, a first proportional valve is arranged in the pipeline between the cold accumulation water tank and the buffer tank, the second proportional valve is communicated with the buffer tank, the buffer tank is provided with the buffer tank temperature sensor, the buffer tank is connected with an output pump, a liquid supply temperature sensor and a manual regulating valve are arranged in the pipeline between the output pump and the laser, and the first proportional valve, the second proportional valve, the liquid return temperature sensor, the liquid supply temperature sensor and the buffer tank temperature sensor are respectively electrically connected with a processor.
2. The temperature control and regulation system adopting two temperature measurement point feedback signals according to claim 1, wherein a pressure sensor and/or a flowmeter is/are respectively arranged in a pipeline between the laser and the cold accumulation water tank and a pipeline between the buffer tank and the laser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323288855.2U CN221225398U (en) | 2023-12-04 | 2023-12-04 | Temperature control and regulation system adopting two temperature measurement point feedback signals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323288855.2U CN221225398U (en) | 2023-12-04 | 2023-12-04 | Temperature control and regulation system adopting two temperature measurement point feedback signals |
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| Publication Number | Publication Date |
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| CN221225398U true CN221225398U (en) | 2024-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202323288855.2U Active CN221225398U (en) | 2023-12-04 | 2023-12-04 | Temperature control and regulation system adopting two temperature measurement point feedback signals |
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| CN (1) | CN221225398U (en) |
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2023
- 2023-12-04 CN CN202323288855.2U patent/CN221225398U/en active Active
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