Pulse combustion system

Abstract

The utility model relates to the field of firing, in particular to a pulse combustion system which comprises a combustion device and a gas supply device. The combustion device comprises a fuel gas unit, a combustion-supporting air unit, a burner, a burner controller and a pulse control mechanism; the fuel gas unit comprises a fuel gas path and a gas control switch; the fuel gas path comprises a first gas path and a second gas path; the gas control switch comprises a first gas control switch and a second gas control switch; the combustion-supporting air unit comprises a combustion-supporting air path and an air control switch, the combustion-supporting air path comprises a first air path and a second air path, and the air control switch is arranged on the second air path; the pulse control mechanism is respectively connected with the second gas control switch and the wind control switch; the gas supply device comprises a gas supply pipeline and a protection mechanism arranged on the gas supply pipeline, and the protection mechanism comprises a gas high-pressure switch and a gas low-pressure switch. According to the utility model, the normal operation of the system is ensured while the mixing ratio of gas and air is accurately controlled.

Description

Technical Field

[0001] The utility model relates to the firing field, in particular to a pulse combustion system. Background Art

[0002] The existing process for manufacturing sodium salt battery diaphragms includes a firing process, which uses a kiln to fire it. In order to control the firing temperature and ensure the quality of the product, the size of the burner flame is adjusted by adjusting the size of the actuator valve position to adjust the temperature in the kiln. This adjustment method is to change the flow rate of the incoming gas by constantly switching the size of the valve position back and forth to achieve the adjustment of "low fire" and "high fire". However, switching the valve position back and forth is prone to inaccurate adjustment, and it is impossible to ensure that the gas and air are mixed in an accurate ratio, so it is difficult to ensure that the desired temperature and atmosphere can be obtained.

[0003] In addition, the existing combustion system may have safety hazards or problems such as failure to operate normally. If the gas pressure is too high, there may be huge safety hazards such as explosion, which will cause great threats to life and property. If the gas pressure is too low, the burner may not burn, cannot be used normally, and cannot ensure the normal production. Therefore, the gas pressure must be kept within a certain range, neither too high nor too low, so as to ensure the safety and stability of the combustion system. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a pulse combustion system which can accurately control the mixing ratio of gas and air while ensuring the normal operation of the system.

[0005] In order to solve the above technical problems, the utility model provides a pulse combustion system, including a combustion device and an air supply device;

[0006] The combustion device comprises a gas unit, a combustion-supporting air unit, a burner, a burner controller and a pulse control mechanism, and the burner, the burner controller and the pulse control mechanism are connected in sequence;

[0007] The gas unit comprises a gas circuit and a gas control switch; the gas circuit comprises a first gas circuit and a second gas circuit, the first gas circuit and the second gas circuit are respectively connected to the burner; the gas control switch comprises a first gas control switch arranged on the first gas circuit and a second gas control switch arranged on the second gas circuit, and the burner controller is connected to the first gas control switch;

[0008] The combustion-supporting air unit comprises a combustion-supporting air path and an air control switch, wherein the combustion-supporting air path comprises a first air path and a second air path, wherein the first air path and the second air path are respectively connected to the burner, and the air control switch is arranged on the second air path;

[0009] The pulse control mechanism is connected to the second gas control switch and the wind control switch respectively;

[0010] The gas supply device comprises a gas supply pipeline and a protection mechanism arranged on the gas supply pipeline, and the protection mechanism comprises a gas high-pressure switch and a gas low-pressure switch.

[0011] As an improvement of the above solution, the gas circuit further includes a gas inlet, and the gas inlet is connected to the burner through the first gas circuit and the second gas circuit respectively;

[0012] The combustion-supporting air passage comprises a combustion-supporting air inlet, and the combustion-supporting air inlet is connected to the burner through the first air passage and the second air passage respectively.

[0013] As an improvement of the above solution, a first gas flow valve is provided on the first gas line, and a second gas flow valve is provided on the second gas line;

[0014] A first air flow valve is provided on the first air passage, and a second air flow valve is provided on the second air passage.

[0015] As an improvement of the above solution, it also includes a temperature measuring element, and the pulse control mechanism is connected to the temperature measuring element.

[0016] As an improvement on the above solution, the first gas control switch and the second gas control switch are both gas solenoid valves, and the wind control switch is an air pulse valve.

[0017] As an improvement of the above solution, the burner controller is connected to the burner via a detection electrode and an ignition electrode respectively.

[0018] As an improvement of the above solution, the gas unit also includes a safety cut-off valve arranged on the gas path, the safety cut-off valve is connected to the burner controller, and the gas inlet is connected to the first gas path and the second gas path respectively through the safety cut-off valve.

[0019] As an improvement of the above scheme, the gas supply device also includes a filter arranged on the gas supply pipeline, and the two ends of the gas supply pipeline are respectively provided with an air inlet and an air supply port, the air supply port is connected to the gas inlet, and the air inlet, filter, protection mechanism and gas supply port are arranged in sequence.

[0020] As an improvement of the above scheme, the air supply pipeline includes an air supply sub-pipeline group, the air inlet is connected to the air supply port through the air supply sub-pipeline group, and the air inlet, filter, air supply sub-pipeline group, protection mechanism and air supply port are arranged in sequence.

[0021] As an improvement of the above solution, the gas supply sub-pipeline group includes a first gas supply sub-pipeline and a second gas supply sub-pipeline, and the gas inlet is connected to the gas supply port through the first gas supply sub-pipeline and the second gas supply sub-pipeline respectively;

[0022] The gas supply branch pipeline group is provided with a pressure reducing valve, and the pressure reducing valve includes a first pressure reducing valve provided on the first gas supply branch pipeline and a second pressure reducing valve provided on the second gas supply branch pipeline.

[0023] The implementation of this utility model has the following beneficial effects:

[0024] The gas circuit of the pulse combustion system of the utility model includes a first gas circuit and a second gas circuit arranged in parallel, and the combustion-supporting air circuit includes a first air circuit and a second air circuit arranged in parallel. The flow rates of the first gas circuit, the second gas circuit, the first air circuit and the second air circuit can be adjusted in advance. The burner controller controls the on-off of the first gas circuit through the first gas control switch. When the system is turned on, gas is introduced into the gas circuit and combustion-supporting air is introduced into the combustion-supporting air circuit through the gas inlet and the combustion-supporting air inlet respectively. The burner controller controls the first gas control switch to open and ignites the burner. At this time, the burner is supplied with gas by the first gas circuit and combustion-supporting air by the first air circuit, so that the burner burns. The pulse control mechanism controls the opening and closing of the second gas control switch and the air control switch according to the instructions to realize the intermittent combustion mode.

[0025] When the pulse control mechanism controls the second gas control switch and the wind control switch to be closed, and only the first gas path and the first wind path supply gas and combustion-supporting gas to the burner, the burner is in a "low fire" burning state; when the pulse control mechanism controls the second gas control switch and the wind control switch to be opened, the first gas path and the second gas path simultaneously supply gas to the burner, and the first wind path and the second wind path simultaneously supply combustion-supporting air to the burner, and the burner is in a "high fire" burning state. Therefore, under the action of the pulse control mechanism, the burner can continuously pulse between "low fire" and "high fire" to adjust the temperature. Since the flow rates of each gas path and wind path can be pre-adjusted and do not interfere with each other, it can ensure that the gas and air are mixed in the correct proportion to ensure that the desired temperature and atmosphere are obtained. At the same time, this intermittent combustion method can also continuously stir the atmosphere, so that the temperature distribution is uniform, the product is heated evenly, and the product quality is good.

[0026] In addition, a gas high-pressure switch and a gas low-pressure switch are installed on the gas supply device to prevent the gas pressure from being too high or too low, and to limit the high and low pressures of the gas to ensure the normal operation of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the combustion device of the utility model;

[0028] Figure 2 It is a structural schematic diagram of the gas supply device of the utility model. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail with reference to the accompanying drawings. It is hereby stated that the directional words such as up, down, left, right, front, back, inside, outside, etc. that appear or will appear in the text of the utility model are only based on the accompanying drawings of the utility model, and are not specific limitations of the utility model.

[0030] See also Figure 1-2 The utility model discloses a pulse combustion system, which comprises a combustion device and an air supply device.

[0031] The combustion device comprises a gas unit, a combustion-supporting air unit, a burner 6, a burner controller 5 and a pulse control mechanism 7, and the burner 6, the burner controller 5 and the pulse control mechanism 7 are connected in sequence.

[0032] The gas unit includes a gas circuit and a gas control switch;

[0033] The fuel gas circuit includes a first gas circuit 2 and a second gas circuit 3, and the first gas circuit 2 and the second gas circuit 3 are respectively connected to the burner 6; the gas control switch includes a first gas control switch 21 arranged on the first gas circuit 2 and a second gas control switch 31 arranged on the second gas circuit 3, and the burner controller 5 is connected to the first gas control switch 21.

[0034] The combustion-supporting air unit includes a combustion-supporting air path and an air control switch 11, wherein the combustion-supporting air path includes a first air path 9 and a second air path 10, wherein the first air path 9 and the second air path 10 are respectively connected to the burner 6, and the air control switch 11 is arranged on the second air path 10;

[0035] The pulse control mechanism 7 is connected to the second gas control switch 31 and the wind control switch 11 respectively.

[0036] The gas supply device includes a gas supply pipeline 100 and a protection mechanism arranged on the gas supply pipeline 100 , and the protection mechanism includes a gas high-pressure switch 19 and a gas low-pressure switch 20 .

[0037] The gas circuit of the pulse combustion system of the utility model includes a first gas circuit and a second gas circuit arranged in parallel, and the combustion-supporting air circuit includes a first air circuit and a second air circuit arranged in parallel. The flow rates of the first gas circuit, the second gas circuit, the first air circuit and the second air circuit can be adjusted in advance. The burner controller controls the on-off of the first gas circuit through the first gas control switch. When the system is turned on, gas is introduced into the gas circuit and combustion-supporting air is introduced into the combustion-supporting air circuit through the gas inlet and the combustion-supporting air inlet respectively. The burner controller controls the first gas control switch to open and ignites the burner. At this time, the burner is supplied with gas by the first gas circuit and combustion-supporting air by the first air circuit, so that the burner burns. The pulse control mechanism controls the opening and closing of the second gas control switch and the air control switch according to the instructions to realize the intermittent combustion mode.

[0038] When the pulse control mechanism controls the second gas control switch and the wind control switch to be closed, and only the first gas path and the first wind path supply gas and combustion-supporting gas to the burner, the burner is in a "low fire" burning state; when the pulse control mechanism controls the second gas control switch and the wind control switch to be opened, the first gas path and the second gas path simultaneously supply gas to the burner, and the first wind path and the second wind path simultaneously supply combustion-supporting air to the burner, and the burner is in a "high fire" burning state. Therefore, under the action of the pulse control mechanism, the burner can continuously pulse between "low fire" and "high fire" to adjust the temperature. Since the flow rates of each gas path and wind path can be pre-adjusted and do not interfere with each other, it can ensure that the gas and air are mixed in the correct proportion to ensure that the desired temperature and atmosphere are obtained. At the same time, this intermittent combustion method can also continuously stir the atmosphere, so that the temperature distribution is uniform, the product is heated evenly, and the product quality is good.

[0039] In addition, a gas high-pressure switch and a gas low-pressure switch are installed on the gas supply device to prevent the gas pressure from being too high or too low, and to limit the high and low pressures of the gas to ensure the normal operation of the system.

[0040] It should be noted that the gas high-pressure switch 19 and the gas low-pressure switch 20 are both pressure switches. Pressure switches have different pressure values, and pressure switches with different pressure values ​​can be selected according to different needs. The gas high-pressure switch of the utility model can select the pressure switch of the highest pressure value of the system. When the gas pressure in the gas supply pipeline is higher than the highest pressure value set by the gas high-pressure switch, the gas high-pressure switch automatically closes and stops supplying gas to the gas circuit, playing a role of high-pressure protection. Similarly, the gas switch of the utility model can select the pressure switch of the lowest pressure value of the system. When the gas pressure in the gas supply pipeline is lower than the lowest pressure value set by the gas low-pressure switch, the gas low-pressure switch automatically closes and stops supplying gas to the gas circuit, playing a role of low-pressure protection, thereby ensuring that the gas pressure in the gas circuit is always limited to a certain range of values, ensuring the normal operation of the system.

[0041] Specifically, the gas circuit further includes a gas inlet 1, which is connected to the burner 6 through the first gas circuit 2 and the second gas circuit 3, respectively, and gas is supplied to the gas circuit through the gas inlet to supply gas to the burner. The combustion-supporting air circuit includes a combustion-supporting air inlet 8, which is connected to the burner 6 through the first air circuit 9 and the second air circuit 10, respectively, and combustion-supporting air is supplied to the combustion-supporting air circuit through the combustion-supporting air inlet to supply combustion-supporting air to the burner.

[0042] Preferably, the first gas control switch 21 and the second gas control switch 31 are both gas solenoid valves, and the wind control switch 11 is an air pulse valve. The gas solenoid valve and the air pulse valve can adopt the existing technical structure, which will not be described in detail here.

[0043] Preferably, the first gas circuit 2 is provided with a first gas flow valve 22, and the second gas circuit 3 is provided with a second gas flow valve 32. The first gas flow valve 22 and the second gas flow valve 32 can both adopt the existing technical structure, and will not be described in detail here. Independent gas flow valves are respectively provided on the first gas circuit and the second gas circuit, which do not interfere with each other. The gas flow rates of the first gas circuit and the second gas circuit can be adjusted according to the gas volume to be mixed, so as to ensure the preset gas volume supply, thereby ensuring the mixing ratio of gas and air.

[0044] Preferably, a first air flow valve 12 is provided on the first air passage 9, and a second air flow valve 13 is provided on the second air passage 10. The first air flow valve 12 and the second air flow valve 13 can both adopt the existing technical structure, and will not be described in detail here. Independent air flow valves are provided on the first air passage and the second air passage respectively, which do not interfere with each other. The ventilation volume of the first air passage and the second air passage can be adjusted according to the amount of air to be mixed, so as to ensure the preset air volume supply, thereby ensuring the mixing ratio of gas and air.

[0045] The burner controller 5 is connected to the burner 6 through a detection electrode 51 and an ignition electrode 52. The detection electrode is used to detect the combustion condition of the burner, and the ignition electrode is used to ignite the burner.

[0046] Preferably, the utility model further comprises a temperature measuring element 71, and the pulse control mechanism 7 is connected to the temperature measuring element 71. More preferably, the temperature measuring element 71 is a thermocouple. The temperature measuring element is used to measure the temperature around the burner, monitor the firing temperature, and ensure that the desired temperature is reached.

[0047] Preferably, the gas unit further comprises a safety cut-off valve 4 provided on the gas path, the safety cut-off valve 4 is connected to the burner controller 5, and the gas inlet 1 is respectively connected to the first gas path 2 and the second gas path 3 through the safety cut-off valve 4. That is, a safety cut-off valve is provided on the gas path near the gas inlet, and in case of an emergency, the burner controller can control the safety cut-off valve to close and cut off the gas supply to avoid accidents, thereby ensuring the safety of the combustion device.

[0048] Preferably, both the gas circuit and the combustion-supporting air circuit are provided with flow orifice plates 14, and the flow orifice plates are used to detect the flow in the gas circuit or the air circuit.

[0049] Further, see Figure 2The gas supply device further includes a filter 16 disposed on the gas supply pipeline 100. The gas supply pipeline 100 is provided with an air inlet 15 and an air supply port 42 at both ends thereof. The air supply port 42 is connected to the gas inlet 1. The air inlet 15, the filter 16, the protection mechanism and the gas supply port 42 are arranged in sequence. The gas is supplied to the gas circuit through the gas supply pipeline. The filter can filter out impurities in the gas to ensure the normal operation of the system.

[0050] Preferably, the gas supply pipeline 100 includes a gas supply sub-pipeline group, and the gas inlet 15 is connected to the gas supply port 42 through the gas supply sub-pipeline group, and the gas inlet 15, the filter 16, the gas supply sub-pipeline group, the protection mechanism and the gas supply port 42 are arranged in sequence. The gas supply sub-pipeline group may include a plurality of gas supply sub-pipelines, and each gas supply sub-pipeline may be provided with a respective switch to control the on-off of each gas supply sub-pipeline. The setting of the gas supply sub-pipeline group can avoid the blockage of a gas supply sub-pipeline and the failure of gas supply, thereby ensuring the normal operation of the system. The filter is arranged between the gas inlet and the gas supply sub-pipeline group to avoid the gas with impurities being retained in the gas supply sub-pipeline and causing blockage. The protection mechanism is arranged between the gas supply sub-pipeline group and the gas supply port to better detect the gas pressure in the gas supply pipeline and ensure that the gas pressure supplied to the gas gas circuit meets the requirements.

[0051] More preferably, the gas supply sub-pipeline group includes a first gas supply sub-pipeline 101 and a second gas supply sub-pipeline 102, and the gas inlet 15 is connected to the gas supply port 42 through the first gas supply sub-pipeline 101 and the second gas supply sub-pipeline 102. The gas supply sub-pipeline group includes at least two gas supply sub-pipelines, and the corresponding switch of the gas supply sub-pipeline to be used is turned on, and the switch on the unused gas supply sub-pipeline is turned off. That is, some gas supply sub-pipelines are used pipelines, and other gas supply sub-pipelines are standby pipelines.

[0052] More preferably, the gas supply sub-pipeline group is provided with a pressure reducing valve, which includes a first pressure reducing valve 17 provided on the first gas supply sub-pipeline 101 and a second pressure reducing valve 18 provided on the second gas supply sub-pipeline 102. The setting of the pressure reducing valve can reduce the pressure of the gas, protect the gas circuit, avoid excessive gas pressure, and ensure the normal operation of the system.

[0053] Preferably, a safety shut-off valve 41 is provided between the protection mechanism and the air supply port 42. When an emergency occurs, the valve will be quickly closed or opened to avoid accidents, thereby ensuring the safety of the air supply device.

[0054] In summary, the utility model provides a pulse combustion system, which can accurately control the mixing ratio of gas and air while ensuring the normal operation of the system.

[0055] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the protection scope of the present invention.

Claims

1. A pulse combustion system, characterized in that: It includes a combustion device and a gas supply device; The combustion device comprises a gas unit, a combustion-supporting air unit, a burner, a burner controller and a pulse control mechanism, and the burner, the burner controller and the pulse control mechanism are connected in sequence; The gas unit comprises a gas circuit and a gas control switch; the gas circuit comprises a first gas circuit and a second gas circuit, the first gas circuit and the second gas circuit are respectively connected to the burner; the gas control switch comprises a first gas control switch arranged on the first gas circuit and a second gas control switch arranged on the second gas circuit, and the burner controller is connected to the first gas control switch; The combustion-supporting air unit comprises a combustion-supporting air path and an air control switch, wherein the combustion-supporting air path comprises a first air path and a second air path, wherein the first air path and the second air path are respectively connected to the burner, and the air control switch is arranged on the second air path; The pulse control mechanism is connected to the second gas control switch and the wind control switch respectively; The gas supply device comprises a gas supply pipeline and a protection mechanism arranged on the gas supply pipeline, and the protection mechanism comprises a gas high-pressure switch and a gas low-pressure switch.

2. The pulse combustion system according to claim 1, characterized in that: The gas circuit also includes a gas inlet, which is connected to the burner through the first gas circuit and the second gas circuit respectively; The combustion-supporting air passage comprises a combustion-supporting air inlet, and the combustion-supporting air inlet is connected to the burner through the first air passage and the second air passage respectively.

3. The pulse combustion system according to claim 1, characterized in that: The first gas line is provided with a first gas flow valve, and the second gas line is provided with a second gas flow valve; A first air flow valve is provided on the first air passage, and a second air flow valve is provided on the second air passage.

4. The pulse combustion system according to claim 1, characterized in that: It also includes a temperature measuring element, and the pulse control mechanism is connected to the temperature measuring element.

5. The pulse combustion system according to claim 1, characterized in that: The first gas control switch and the second gas control switch are both gas solenoid valves, and the wind control switch is an air pulse valve.

6. The pulse combustion system according to claim 1, characterized in that: The burner controller is connected to the burner through a detection electrode and an ignition electrode respectively.

7. The pulse combustion system according to claim 2, characterized in that: The gas unit further comprises a safety cut-off valve arranged on the gas path, the safety cut-off valve is connected to the burner controller, and the gas inlet is respectively connected to the first gas path and the second gas path through the safety cut-off valve.

8. The pulse combustion system according to claim 2, characterized in that: The gas supply device also includes a filter arranged on the gas supply pipeline. The two ends of the gas supply pipeline are respectively provided with an air inlet and an air supply port. The air supply port is connected to the gas inlet. The air inlet, filter, protection mechanism and gas supply port are arranged in sequence.

9. The pulse combustion system according to claim 8, characterized in that: The air supply pipeline includes an air supply sub-pipeline group, the air inlet is connected to the air supply port through the air supply sub-pipeline group, and the air inlet, filter, air supply sub-pipeline group, protection mechanism and air supply port are arranged in sequence.

10. The pulse combustion system according to claim 9, characterized in that: The gas supply sub-pipeline group includes a first gas supply sub-pipeline and a second gas supply sub-pipeline, and the gas inlet is connected to the gas supply port through the first gas supply sub-pipeline and the second gas supply sub-pipeline respectively; The gas supply branch pipeline group is provided with a pressure reducing valve, and the pressure reducing valve includes a first pressure reducing valve provided on the first gas supply branch pipeline and a second pressure reducing valve provided on the second gas supply branch pipeline.

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