Diffusion ignition temperature detection equipment for fan room
By discharging the ignition temperature detection equipment in the fan room, using a cold end composed of thermocouple and thermally conductive material, combining the thermal layer and cooling pipe, the problems of heat loss and temperature detection are solved, and the effective utilization of heat and the adequacy of combustion are achieved, ensuring that The safe operation of the fan room.
Patent Information
- Application Number
- CN202420124962.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-18
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-01-18
AI Technical Summary
The heat loss is severe during the discharge and ignition process in the fan room, and it is difficult for existing equipment to quickly and accurately detect the combustion temperature, resulting in the ineffective use of heat and increased safety risks.
A fan room discharge ignition temperature detection equipment is designed, including the fan room air duct and the temperature measuring box. The cold end composed of a thermocouple and thermally conductive material is used to guide heat into the air chamber through the thermally conductive layer for preheating, and pass through the cooling pipe. Heat is transferred to a heat exchange device, combined with a heat insulation layer and an annular combustion hood to improve temperature measurement accuracy and combustion efficiency.
It realizes rapid utilization of combustion heat, reduces heat loss, improves resource utilization, ensures the adequacy and safety of combustion, and avoids equipment damage and danger caused by excessive temperature.
Smart Images
Figure CN222256608U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fan room ignition emission monitoring devices, in particular to fan room ignition emission temperature detection equipment. Background Art
[0002] Dispersion ignition is an environmental protection measure, which is mainly used to burn biogas that cannot be used normally. Specifically, when dealing with excessive biogas, the biogas must be burned thoroughly before it can be discharged safely. If it cannot be fully burned or is directly discharged into the air, it will cause serious air pollution and cause explosion risks. Therefore, the dispersion ignition device is used to fundamentally prevent biogas from being discharged directly into the atmosphere. This device uses system pipelines, valves, instruments and burners to dehydrate and ignite the excess gas, and controls the flow rate, pressure and temperature of the gas during the discharge process, so that the harmful gas can be completely burned, cracked and discharged in compliance with the standards during the dispersion process.
[0003] There may be a large amount of flammable gas in the fan room. If these gases are not treated and discharged in time, they may cause dangerous situations such as fire or explosion. Therefore, in order to ensure the safe operation of the fan room, it is necessary to take ignition measures to burn the flammable gas and convert it into harmless gas for discharge, thereby reducing the risk.
[0004] During the diffusion ignition process, the high-temperature flame generated by the combustion of the fuel and air mixture will release heat into the surrounding environment. In this process, the heat is not effectively used to generate power or thermal energy, but is directly discharged into the atmosphere, causing heat loss. In addition, during the diffusion ignition process, the high-temperature flame will also cause the surrounding air to heat up, causing the air temperature to rise. This heating effect will lead to further heat loss, because the high-temperature air will transfer heat to the surrounding environment more quickly. In addition, diffusion ignition is usually carried out in an open or semi-open environment, which makes heat loss easier. Because the gas accumulates at a fast speed in the fan room, diffusion ignition is required frequently, which also leads to serious heat loss. In addition, during the diffusion ignition process, the combustion temperature needs to be detected to avoid excessive temperature and damage to the equipment. The internal gas flow rate of the diffusion ignition is fast and the flame burns violently, so temperature measuring equipment that can quickly detect is required. Utility Model Content
[0005] (I) Technical problems solved: In view of the deficiencies of the prior art, the utility model provides a fan room ignition temperature detection device, which has the advantages of rapid temperature measurement and utilization of combustion heat, and solves the problems of heat loss and temperature measurement in ignition equipment.
[0006] (ii) Technical solution: In order to achieve the above-mentioned rapid temperature measurement and utilize the purpose of combustion heat, the utility model provides the following technical solution: a fan room ignition temperature detection device, including a fan room air duct and a temperature measuring box, the fan room air duct is provided with a fan room air cavity, the gas in the fan room that needs to be ignited is passed into the fan room air cavity, an air outlet is provided at the end of the fan room air cavity, an igniter is provided on one side of the air outlet, and a temperature measuring box is provided on the other side, a thermocouple and a cold end made of heat-conducting material are provided in the temperature measuring box, one end of the thermocouple is in contact with the cold end in the temperature measuring box, and the other end extends out of the box near the air outlet, a heat-conducting layer is provided on the side of the temperature measuring box near the air outlet, the cold end is surrounded by a cooling pipe and extends into the heat-conducting layer, the coolant in the pipe is injected through the liquid inlet of the cooling pipe, passes through the cold end, and then passes through the heat-conducting layer and flows out from the liquid outlet of the cooling pipe to the heat exchange equipment.
[0007] Preferably, the heat conductive layer extends downward to contact the inner wall of the wind cavity of the fan room.
[0008] Preferably, a heat insulating layer is provided between the heat conductive layer and the temperature measuring box to prevent the heat generated during combustion from being transmitted into the temperature measuring box and affecting the temperature of the cold end, thereby reducing the temperature difference between the two ends and causing the temperature accuracy of the thermocouple measurement to decrease, resulting in failure to adjust in time and causing danger.
[0009] Preferably, the temperature measured by the thermocouple is transmitted to a control center, and the control center controls the amount of gas introduced into the wind cavity of the fan room.
[0010] Preferably, an annular combustion hood is provided outside the air outlet, and the combustion hood also surrounds the heat conductive layer of the temperature measuring box in the hood. The side of the combustion hood has slots in a circular array. The arrangement of the slots forms a low-pressure area at the center air outlet during combustion, and gas can be sucked in from the outside to the inside through the slots, thereby increasing the oxygen content at the combustion site. The increase in oxygen content allows the fuel to be fully burned, reducing the situation where gas fuel is not completely burned and causing residues, and avoiding the accumulation of combustible gas and causing danger.
[0011] Preferably, a slope is provided at the connection between the air cavity of the fan room and the air outlet, so that when the gas to be ignited in the cavity passes into the air outlet, the airflow movement is more regular, the ejected airflow is more stable, and the combustion is more complete.
[0012] (III) Beneficial effects: Compared with the prior art, the utility model provides a fan room ignition temperature detection device, which has the following beneficial effects:
[0013] 1. The fan room ignition temperature detection equipment is provided with a heat-conducting layer on the side of the temperature measuring box close to the combustion, and one end of the thermocouple is provided on the side of the heat-conducting layer close to the combustion. The other end of the thermocouple contacts the cold end in the temperature measuring box, and the heat generated by the combustion is transferred to the heat-conducting layer. The heat-conducting layer is isolated from the space in the temperature measuring box by a heat-insulating layer, so that a temperature gradient is generated at both ends. At the same time, the thermocouple is composed of two different materials. When there is a temperature gradient, a thermoelectric effect will be generated. The two materials are positive and negative electrode materials, and an electromotive force is generated between them, so that a current is generated in the circuit. The combustion temperature is detected by amplifying the electromotive force and transmitting it to the control center. A cooling pipe is surrounded at the cold end, and a coolant is injected through the liquid inlet of the cooling pipe. After the cooling pipe cools the cold end, it extends into the heat-conducting layer to absorb the excess heat generated during combustion, and the heat is exported from the liquid outlet of the cooling pipe to the external equipment through the internal coolant, and then introduced into other heat exchange equipment, so that the heat of combustion can be utilized, the heat loss is reduced, the utilization rate of resources is improved, and the energy loss is reduced.
[0014] 2. The fan room discharge ignition temperature detection equipment introduces part of the heat into the wind cavity of the fan room through the heat-conducting layer, and preheats the gas to be burned inside, so that the subsequent combustion can be more complete, reducing the harmful gas from not being fully burned, accumulating and finally causing danger. An annular combustion hood is arranged outside the air outlet, and the combustion hood also surrounds the heat-conducting layer of the temperature measuring box in the hood. The side of the combustion hood has a circular array of notches. The arrangement of the notches forms a low-pressure area at the center air outlet when burning, and gas can be sucked in from the outside to the inside through the notches, so that the oxygen content at the combustion site is increased. The increase in oxygen content allows the fuel to be fully burned, reducing the situation where the gas fuel is not completely burned and causing residues, and avoiding the accumulation of combustible gas and causing danger. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the structure of the utility model;
[0016] Figure 2 This is a schematic diagram of the internal structure of the utility model;
[0017] Figure 3 This is a schematic diagram of the control flow of the utility model.
[0018] In the figure: 1. combustion hood; 2. air duct in fan room; 3. temperature measuring box; 11. igniter; 21. air outlet; 22. air cavity in fan room; 31. thermocouple; 32. heat conducting layer; 33. heat insulating layer; 34. cooling pipe; 311. cold end; 341. liquid inlet of cooling pipe; 342. liquid outlet of cooling pipe. DETAILED DESCRIPTION
[0019] 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.
[0020] See also Figure 1-2 The fan room ignition temperature detection device includes a fan room air duct 2 and a temperature measuring box 3. The fan room air duct 2 is provided with a fan room air cavity 22. The gas in the fan room that needs to be ignited is passed into the fan room air cavity 22. An air outlet 21 is provided at the end of the fan room air cavity 22. An igniter 11 is provided on one side of the air outlet 21, and a temperature measuring box 3 is provided on the other side. A thermocouple 31 and a cold end 311 made of heat-conducting material are provided in the temperature measuring box 3. One end of the thermocouple 31 is in contact with the cold end 311 in the temperature measuring box 3, and the other end extends out of the box near the air outlet 21. The thermocouple is composed of two different materials. When there is a temperature gradient, a thermoelectric effect will be generated. The two materials are positive and negative electrode materials, and an electromotive force is generated between them, so that a current is generated in the circuit. The combustion temperature is detected by amplifying the electromotive force and transmitting it to the control center.
[0021] Furthermore, a heat conducting layer 32 is provided on the side of the temperature measuring box 3 close to the air outlet 21, and a cooling pipe 34 is surrounded by the cold end 311 and extends into the heat conducting layer 32. The coolant in the pipe is injected through the cooling pipe liquid inlet 341, passes through the cold end 311, and then passes through the heat conducting layer 32, absorbs the heat generated during combustion, and then flows out from the cooling pipe liquid outlet 342 to the heat exchange equipment, so that the heat of combustion can be utilized, reducing heat loss, improving resource utilization, and reducing energy loss.
[0022] The heat conductive layer 32 extends downward and contacts the inner wall of the wind cavity 22 of the fan room. The heat of combustion is introduced into the inner wall of the wind cavity 22 of the fan room through the heat conductive layer 32, so as to preheat the gas in the cavity and increase the temperature so that the gas can burn more completely during subsequent combustion, thereby reducing the residual gas fuel caused by incomplete combustion and avoiding the accumulation of combustible gas and the occurrence of danger.
[0023] The heat-conducting layer 32 is separated from the temperature measuring box 3 by a heat-insulating layer 33 to prevent the heat generated during combustion from being transmitted into the temperature measuring box 3 and affecting the temperature of the cold end 311, thereby reducing the temperature difference between the two ends and causing the temperature accuracy measured by the thermocouple 31 to decrease, resulting in failure to adjust in time and causing danger.
[0024] The temperature measured by the thermocouple 31 is transmitted to the control center, and the control center controls the amount of gas introduced into the air cavity 22 of the fan room. When the control center detects through the thermocouple 31 that the internal combustion temperature is too high, the air intake into the air cavity 22 of the fan room is reduced to slow down the combustion reaction and avoid equipment damage and other dangers caused by excessive temperature.
[0025] An annular combustion cover 1 is provided outside the air outlet 21, and the combustion cover 1 also surrounds the heat conductive layer 32 of the temperature measuring box 3 in the cover. The side of the combustion cover 1 has notches in a circular array. The arrangement of the notches forms a low-pressure area when the air outlet 21 at the center is burning. Gas can be sucked in from the outside to the inside through the notches, so that the oxygen content at the combustion site increases. The increase in oxygen content allows the fuel to be fully burned, reduces the situation where the gas fuel is not completely burned and causes residues, and avoids the accumulation of combustible gas and the occurrence of danger.
[0026] The connection between the air cavity 22 of the fan room and the air outlet 21 is provided with an inclined surface, so that when the gas to be ignited in the cavity passes into the air outlet 21, the airflow movement is more regular, the ejected airflow is more stable, and the combustion is more complete.
[0027] Working principle: The device passes the gas that needs to be discharged and ignited in the fan room into the fan room air cavity 22, and the gas is ejected from the air outlet 21 through the air pump inside the fan room air duct 2, and the gas is ignited by the igniter 11, so that the gas introduced into the fan room is burned, thereby reducing the accumulated combustible gas and avoiding dangerous situations. A temperature measuring box 3 is provided next to the combustion site, and a heat conducting layer 32 is provided on the side of the temperature measuring box 3 close to the combustion site. One end of the thermocouple 31 is provided on the side of the heat conducting layer 32 close to the combustion, and the other end of the thermocouple 31 contacts the cold end 311 in the temperature measuring box 3, and the heat generated by the combustion is transferred to the heat conducting layer 32. The heat conducting layer 32 is isolated from the space inside the temperature measuring box 3 by a heat insulating layer 33, so that a temperature gradient is generated at both ends. At the same time, the thermocouple is composed of two different materials. When there is a temperature gradient, a thermoelectric effect will be generated. The two materials are positive and negative electrode materials, and an electromotive force is generated between them, so that current is generated in the circuit. The combustion temperature is detected by amplifying the electromotive force and transmitting it to the control center. A cooling pipe 34 is arranged around the cold end 311, and coolant is injected through the cooling pipe inlet 341. The cooling pipe 34 cools the cold end 311 and then extends into the heat transfer layer 32 to absorb excess heat generated during combustion. The heat is conducted out to the external equipment through the cooling pipe outlet 342 through the internal coolant and then introduced into other heat exchange equipment so that the heat of combustion can be utilized. At the same time, part of the heat is conducted into the air cavity 22 of the fan room through the heat transfer layer 32 to preheat the gas to be burned inside, so that the combustion is more complete during subsequent combustion, and the harmful gas is reduced from not being fully burned and accumulating to cause danger. When the control center detects that the internal combustion temperature is too high through the thermocouple 31, the air intake in the air cavity 22 of the fan room is reduced to slow down the combustion reaction and avoid equipment damage and other dangers caused by excessive temperature.
[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.
[0029] 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 fan room ignition temperature detection device, comprising a fan room air duct (2) and a temperature measuring box (3), characterized in that: The fan room air duct (2) is provided with a fan room air cavity (22), and the gas to be ignited in the fan room is passed into the fan room air cavity (22). An air outlet (21) is provided at the end of the fan room air cavity (22). An igniter (11) is provided on one side of the air outlet (21), and a temperature measuring box (3) is provided on the other side. A thermocouple (31) and a cold end (311) made of a heat-conducting material are provided in the temperature measuring box (3). One end of the thermocouple (31) is connected to the temperature measuring box (3). The temperature measuring box (3) is provided with a heat conducting layer (32) on the side close to the air outlet (21); the cold end (311) is surrounded by a cooling tube (34) and extends into the heat conducting layer (32); the coolant in the tube is injected through the cooling tube liquid inlet (341), passes through the cold end (311), and then passes through the heat conducting layer (32), and then flows out from the cooling tube liquid outlet (342) to the heat exchange device.
2. The fan room ignition temperature detection device according to claim 1 is characterized in that: The heat-conducting layer (32) extends downwards and contacts the inner wall of the wind chamber (22) of the fan room.
3. The fan room ignition temperature detection device according to claim 1 is characterized in that: A heat insulating layer (33) is provided between the heat conducting layer (32) and the interior of the temperature measuring box (3) to separate them.
4. The fan room ignition temperature detection device according to claim 1 is characterized in that: The temperature measured by the thermocouple (31) is transmitted to a control center, and the control center controls the amount of gas introduced into the wind cavity (22) of the fan room.
5. The fan room ignition temperature detection device according to claim 1 is characterized in that: An annular combustion cover (1) is arranged outside the air outlet (21), and the combustion cover (1) also surrounds the heat-conducting layer (32) of the temperature measuring box (3) inside the cover. The side surface of the combustion cover (1) has a circular array of notches.
6. The fan room ignition temperature detection device according to claim 1 is characterized in that: A slope is provided in the air cavity (22) of the fan room at the connection with the air outlet (21).