CN220303639U - Premixing machine high temperature protection system - Google Patents
Premixing machine high temperature protection system Download PDFInfo
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- CN220303639U CN220303639U CN202320705753.7U CN202320705753U CN220303639U CN 220303639 U CN220303639 U CN 220303639U CN 202320705753 U CN202320705753 U CN 202320705753U CN 220303639 U CN220303639 U CN 220303639U
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- temperature
- combustion head
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- protection system
- probe
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- 239000000523 sample Substances 0.000 claims abstract description 39
- 238000002485 combustion reaction Methods 0.000 claims abstract description 37
- 239000000498 cooling water Substances 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000001816 cooling Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 37
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 239000002737 fuel gas Substances 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
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- Control Of Combustion (AREA)
Abstract
The utility model relates to a high-temperature protection system of a premixing machine, which comprises a mixer, a premixing fan, a gas pipe, a combustion head and a gas valve. The high-temperature protection system comprises a plurality of temperature probes, a main control module, a high Wen Jishi module, a cooling water pipe mechanism and a circulating water supply device, wherein the temperature probes are arranged from a gas pipe to a combustion head, and the cooling water pipe mechanism consists of two mounting rings and a cooling water pipe; the main control module is electrically connected with the temperature probe, the high Wen Jishi module, the circulating water supply device and the gas valve, and can firstly start the circulating water supply device to perform water cooling and cooling at high temperature, and then cut off the gas valve to supply gas according to the timing duration of the high Wen Jishi module. The structure has good high-temperature protection effect, and can avoid the problems of part damage, unstable air flow, large impact noise and the like caused by frequent switching of the electromagnetic valve.
Description
Technical Field
The utility model relates to the technical field of combustion equipment, in particular to a premixing machine high-temperature protection system.
Background
A premix machine is an assembly in a burner for mixing fuel with air. In the using process of the burner, a large amount of continuous heat can be generated at the burner end, the temperature rise of the whole burner is continuously increased, high-temperature damage is brought to key parts in the whole burner, and even the key parts fail. Therefore, it is very necessary to study the high temperature protection function thereof.
The patent number of China is CN202221255807.6, the patent discloses a novel industrial burner, including combustor body, solenoid valve, pressure regulating module, temperature transmitter, power module, manual valve, its characterized in that: the gas control circuit and the ignition circuit are also provided; the gas pipe of the burner body is connected with one end of the electromagnetic valve and one end of the manual valve in parallel, and the other end of the electromagnetic valve and the other end of the manual valve are connected with the natural gas pipe in parallel; the temperature transmitter detecting head is arranged in the hearth, and the pressure regulating module, the power module, the gas control circuit and the ignition circuit are arranged in the electric cabinet; the control power supply input end of the fuel gas control circuit is electrically connected with the power supply output end of the voltage regulating module; the signal power supply output end of the gas control circuit is electrically connected with the electromagnetic valve and the power supply input end of the blower of the burner body respectively, and the power supply output end of the ignition circuit is electrically connected with the igniter power switch of the burner body; the signal output end of the temperature transmitter is electrically connected with the signal input end of the gas control circuit, and the signal output end of the gas control circuit is electrically connected with the signal input end of the ignition circuit. In the structure, when the temperature in the hearth is too high, the gas control circuit can control the electromagnetic valve to be closed, so that the natural gas amount in the combustion chamber entering the hearth is reduced, but the electromagnetic valve needs to be frequently switched to be opened and closed in the process, the electromagnetic valve is easy to damage, the gas flow is unstable, and the pipeline is large in impact and noise vibration.
Disclosure of Invention
The utility model aims to solve the problems by overcoming the problems, and provides a premixing machine high-temperature protection system which can realize multi-point and multi-azimuth temperature acquisition, adopts a dual high-temperature protection mechanism for firstly cooling by water and judging whether to cut off fuel gas supply according to high-temperature duration, and effectively avoids the problems of short mechanical life, unstable fuel gas flow, large impact noise and the like caused by frequent opening and closing of a solenoid valve.
The technical scheme of the utility model is as follows:
the utility model relates to a high-temperature protection system of a premixing machine, which comprises a mixer, a premixing fan, a gas pipe and a combustion head which are connected in sequence; the mixer is provided with an air inlet, a gas inlet and an outlet, and a gas valve is arranged at the gas inlet, and is characterized in that:
the high temperature protection system includes:
the temperature probes comprise a plurality of temperature probes which are arranged from the gas pipe to the combustion head and are used for collecting the temperature of each position;
the main control module is electrically connected with the temperature probes and is used for calculating the temperature average value of the temperature probes and judging whether the temperature exceeds a preset temperature;
the high-temperature timing module is electrically connected with the main control module and is used for timing the time exceeding the preset temperature;
the cooling water pipe mechanism is fixedly arranged inside the combustion head and comprises two mounting rings and a cooling water pipe, wherein the two mounting rings are respectively positioned on the inner walls of the two axial ends of the combustion head, and the cooling water pipe is tortuous between the two mounting rings;
the circulating water supply device is externally arranged outside the combustion head and is communicated with the cooling water pipe;
the main control module is electrically connected with the circulating water supply device and is used for controlling the starting of the circulating water supply device when the preset temperature is exceeded;
the main control module is also electrically connected with the gas valve and used for cutting off the gas valve to supply gas according to the timing duration of the high Wen Jishi module.
Through the structure, the temperature of the current burner can be acquired in real time by utilizing a plurality of temperature probes and transmitted to the main control module, the main control module calculates the temperature average value to ensure the accuracy of acquired data, and when the comparison judgment shows that the temperature exceeds the preset temperature, the main control module controls the high-temperature timing module to start timing and controls the circulating water supply device to start, and cooling water is introduced into the cooling water pipe for circulating cooling; if the high temperature state is continuous, after the timing time of the high Wen Jishi module exceeds a certain time, the main control module transmits a signal to the gas valve to cut off the gas supply of the gas valve.
Furthermore, in the high-temperature protection system, at least two threaded blind holes are formed in the peripheral wall of the mounting ring, through holes are formed in the corresponding positions of the combustion heads, the mounting ring is coaxially sleeved in the combustion heads, and the mounting ring and the combustion heads are fixed into a whole through the cooperation of screws, the through holes and the threaded blind holes.
Further, in the high temperature protection system of the present utility model, the cooling water pipe is welded and fixed with the mounting ring.
Further, in the high temperature protection system of the present utility model, the temperature probe includes a first probe provided on a circumferential wall of the gas delivery pipe, a second probe and a third probe provided on a circumferential wall of the combustion head, and a fourth probe provided on an axial front end face of the combustion head.
Further, in the high temperature protection system of the present utility model, the second probe and the third probe are arranged back and forth in the axial direction of the combustion head and are arranged in a staggered manner on the circumference.
The beneficial effects of the utility model are as follows:
the utility model adopts the temperature probes which are arranged in multiple points and multiple directions to carry out multipoint temperature acquisition, effectively improves the precision of temperature acquisition, adopts a double protection mechanism of water cooling and cutting off the gas supply through the linkage control of the main control module, the high Wen Jishi module, the high Wen Jishi module, the circulating water supply device and the gas valve, has good high temperature protection effect, can firstly carry out water cooling and then control whether the gas supply is required to be cut off according to the high temperature time length, and effectively avoids the problems of short mechanical life, disordered gas supply, large gas flow impact and the like caused by frequent opening and closing of the electromagnetic valve.
Drawings
Fig. 1 is a partially cut-away top view of the present utility model.
Fig. 2 is a schematic cross-sectional view of the present utility model.
Fig. 3 is a schematic perspective view of a cooling water pipe mechanism.
Fig. 4 is a block diagram of a high temperature protection system.
Detailed Description
The utility model will now be further described with reference to the accompanying drawings:
referring to fig. 1-2, the pre-mixing machine tempering prevention system according to the present embodiment includes a mixer 1, a pre-mixing fan 2, a gas pipe 3, and a combustion head 4, which are sequentially connected, wherein the mixer 1 has an air inlet, a gas inlet 5, and an outlet, and a gas valve (not shown in the figure) is disposed at the gas inlet 5.
Referring to fig. 1, 2, 3 and 4, the high temperature protection system includes:
the temperature probe 6 comprises a plurality of temperature probes which are arranged from the gas pipe 3 to the combustion head 4 and are used for collecting the temperature of each position;
the main control module 7 is electrically connected with the temperature probes 6 and is used for calculating the temperature average value of the temperature probes 6 and judging whether the temperature exceeds a preset temperature;
the high-temperature timing module 8 is electrically connected with the main control module 7 and is used for timing the time exceeding the preset temperature;
the cooling water pipe mechanism is fixedly arranged inside the combustion head 4 and comprises two mounting rings 9 respectively positioned on the inner walls of the two axial ends of the combustion head 4 and a cooling water pipe 11 which is tortuous between the two mounting rings 9, and the cooling water pipe 11 is fixedly welded with the mounting rings 9;
the circulating water supply device 10 is arranged outside the combustion head 4 and is communicated with the cooling water pipe 11;
the main control module 7 is electrically connected with the circulating water supply device 10 and is used for controlling the circulating water supply device 10 to start when the preset temperature is exceeded;
the main control module 7 is further electrically connected with the gas valve, and is used for cutting off the gas valve to supply gas according to the timing duration of the high Wen Jishi module 8.
Specifically, referring to fig. 3, at least two threaded blind holes (not labeled in the drawing) are provided on the outer peripheral wall of the mounting ring 9, through holes are provided at the corresponding positions of the combustion head 4, the mounting ring 9 is coaxially sleeved in the combustion head 4, and the mounting ring 9 and the combustion head 4 are fixed into a whole by the cooperation of screws, the through holes and the threaded blind holes.
The temperature probe 6 comprises a first probe 6-1 arranged on the circumferential wall of the gas pipe 3, a second probe 6-2 and a third probe 6-3 arranged on the circumferential wall of the combustion head 4, and a fourth probe 6-4 arranged on the axial front end face of the combustion head 4. The second probe 6-2 and the third probe 6-3 are arranged in front of and behind the combustion head 4 in the axial direction and are arranged in a staggered manner in the circumferential direction.
The working principle of the structure is as follows: the temperature probes 6 collect the current burner temperature in real time and transmit the current burner temperature to the main control module 7, the main control module 7 calculates a temperature average value according to the data collected each time, when the comparison judges that the current temperature exceeds the preset temperature, the high-temperature timing module 8 is controlled to start timing, the circulating water supply device 10 is immediately controlled to start, and cooling water is introduced into the cooling water pipe 11 to circularly cool the inside of the burner 4; if the high temperature state is continuous, after the timing time of the high Wen Jishi module 8 exceeds a certain time, the main control module 7 outputs a signal to the gas valve to cut off the gas supply of the gas valve, so that high temperature protection is realized.
The specific embodiments described herein are merely illustrative of the principles and functions of the present utility model, and are not meant to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. It is therefore intended that all equivalent modifications and changes made by those skilled in the art without departing from the spirit and technical spirit of the present utility model shall be covered by the appended claims.
Claims (5)
1. The premixing machine comprises a mixer, a premixing fan, a gas pipe and a combustion head which are connected in sequence; the mixer is provided with an air inlet, a gas inlet and an outlet, and a gas valve is arranged at the gas inlet, and is characterized in that:
the high temperature protection system includes:
the temperature probes comprise a plurality of temperature probes which are arranged from the gas pipe to the combustion head and are used for collecting the temperature of each position;
the main control module is electrically connected with the temperature probes and is used for calculating the temperature average value of the temperature probes and judging whether the temperature exceeds a preset temperature;
the high-temperature timing module is electrically connected with the main control module and is used for timing the time exceeding the preset temperature;
the cooling water pipe mechanism is fixedly arranged inside the combustion head and comprises two mounting rings and a cooling water pipe, wherein the two mounting rings are respectively positioned on the inner walls of the two axial ends of the combustion head, and the cooling water pipe is tortuous between the two mounting rings;
the circulating water supply device is externally arranged outside the combustion head and is communicated with the cooling water pipe;
the main control module is electrically connected with the circulating water supply device and is used for controlling the starting of the circulating water supply device when the preset temperature is exceeded;
the main control module is also electrically connected with the gas valve and used for cutting off the gas valve to supply gas according to the timing duration of the high Wen Jishi module.
2. The premix machine high temperature protection system of claim 1, wherein: the outer peripheral wall of the mounting ring is provided with at least two threaded blind holes, the corresponding position of the combustion head is provided with a through hole, the mounting ring is coaxially sleeved in the combustion head, and the mounting ring and the combustion head are fixed into a whole through the cooperation of screws, the through holes and the threaded blind holes.
3. The premix machine high temperature protection system of claim 1, wherein: the cooling water pipe is welded and fixed with the mounting ring.
4. The premix machine high temperature protection system of claim 1, wherein: the temperature probe comprises a first probe arranged on the circumferential wall of the gas pipe, a second probe and a third probe arranged on the circumferential wall of the combustion head, and a fourth probe arranged on the axial front end face of the combustion head.
5. The premix machine high temperature protection system of claim 4, wherein: the second probe and the third probe are arranged back and forth in the axial direction of the combustion head and are staggered in the circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320705753.7U CN220303639U (en) | 2023-04-03 | 2023-04-03 | Premixing machine high temperature protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320705753.7U CN220303639U (en) | 2023-04-03 | 2023-04-03 | Premixing machine high temperature protection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220303639U true CN220303639U (en) | 2024-01-05 |
Family
ID=89348845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320705753.7U Active CN220303639U (en) | 2023-04-03 | 2023-04-03 | Premixing machine high temperature protection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220303639U (en) |
-
2023
- 2023-04-03 CN CN202320705753.7U patent/CN220303639U/en active Active
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