Efficient combustion device with multiple nozzles arranged cooperatively

Abstract

The invention discloses an efficient combustion device with multiple nozzles arranged cooperatively, and relates to the technical field of boilers. The combustor comprises a combustion preheating cover, an edge fuel distribution chamber and an inner side fuel distribution chamber. A spiral plate and a first heated plate are arranged in the combustion preheating cover for preheating and uniformly combusting fuel; the edge fuel distribution chamber and the inner side fuel distribution chamber are respectively provided with a plurality of nozzles to achieve uniform fuel injection. Fuel supply is conveyed through the first fuel pipeline and the second fuel pipeline, a valve body in the flow adjusting body is accurately controlled by the servo motor and the electromagnet, the pressure sensor monitors the flow speed, and combustion stability is ensured. And the first heated plate and the second heated plate increase the heat absorption area, so that the heat efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of boilers, in particular to a high-efficiency combustion device with multiple nozzles arranged in a coordinated manner. Background Art

[0002] Existing combustion devices usually use a single fuel supply pipeline and a simple nozzle structure, and the fuel is directly sprayed into the combustion area through a single channel for ignition. This design has many shortcomings in practical applications. First, the fuel is directly sprayed out without preheating, the combustion efficiency is low, and it is easy to produce incompletely burned exhaust gas, causing energy waste and environmental pollution. Secondly, traditional devices lack a precise flow regulation mechanism, and the fuel supply is difficult to flexibly adjust according to actual needs, resulting in an unstable combustion process. Especially when multiple fuels need to be burned in coordination, the problem of mismatch is particularly prominent. These shortcomings limit the development of combustion devices in high-efficiency, environmentally friendly and multi-functional applications. Summary of the Invention

[0003] In order to overcome the defects of the above-mentioned prior art, the present invention provides the following technical solution: a high-efficiency combustion device with a coordinated arrangement of multiple nozzles, comprising a combustion preheating hood, an edge fuel distribution chamber fixedly installed at the bottom of the combustion preheating hood, the edge fuel distribution chamber and the bottom of the combustion preheating hood are connected through an outer fuel flow opening, a plurality of outer fuel nozzles are provided on the edge fuel distribution chamber, an inner fuel distribution chamber is fixedly installed at the center position of the edge fuel distribution chamber, and a plurality of inner fuel nozzles are provided on the inner fuel distribution chamber; wherein a spirally arranged spiral plate is fixedly installed inside the combustion preheating hood, the spiral plate is used to divide the interior of the combustion preheating hood into spiral spaces, a fuel supply distribution chamber is fixedly installed at the bottom of the edge fuel distribution chamber, the fuel supply distribution chamber and the interior of the inner fuel distribution chamber are connected through a plurality of inner fuel supply preheating pipes; a plurality of first heat-receiving plates are fixedly installed in a circular equidistant array on the inner wall of the combustion preheating hood.

[0004] Preferably, one end of the inner fuel supply preheating pipe passes through the edge fuel distribution chamber and is connected to the interior of the fuel supply distribution chamber, and the other end of the inner fuel supply preheating pipe is connected to the interior of the inner fuel distribution chamber through an inner fuel flow port opened on the inner fuel distribution chamber, and a second heating plate is fixedly installed between two adjacent inner fuel supply preheating pipes.

[0005] Preferably, a first fuel pipeline and a second fuel pipeline are fixedly installed on the top of the combustion preheating cover and the fuel supply distribution chamber respectively, and a flow regulating body is installed on the first fuel pipeline and the second fuel pipeline in a sealed manner in series. The interior of the flow regulating body is divided into two independent cylindrical spaces, and the two independent cylindrical spaces are connected to the first fuel pipeline and the second fuel pipeline respectively.

[0006] Preferably, a first valve body and a second valve body are respectively installed in a rotationally sealed manner in two independent cylindrical spaces, and a through hole with the same inner diameter as that of the first fuel pipeline and the second fuel pipeline is formed in the first valve body and the second valve body.

[0007] Preferably, the top and bottom ends of the flow regulating body are fixedly sealed with sealing covers, and the two sealing covers are rotatably sealed with adjusting disks, and the axial positions of the first valve body and the second valve body are rotationally sealed with spline shafts, wherein the two adjusting disks are rotationally sealed with the circumferential surface of the spline shaft.

[0008] Preferably, the two regulating disks pass through the sealing cover and are coaxially fixedly matched with the corresponding first valve body and second valve body, so as to drive the first valve body and the second valve body to rotate in the flow regulating body.

[0009] Preferably, the outer fixed sealing sleeve of the flow regulating body is provided with an outer shell, wherein the spline shaft is rotatably mounted on the outer shell, and two electromagnets are sleeved on both ends of the outer surface of the spline shaft by spline sliding. The electromagnets are magnetically engaged with the regulating disk, and a servo motor is fixedly mounted on the outer shell, and the output shaft of the servo motor is fixedly engaged with the spline shaft.

[0010] Preferably, one end of the first fuel pipeline and the second fuel pipeline are fixedly connected and installed with a docking fuel pipe, and a pressure sensor is fixedly installed on the axial position inside each docking fuel pipe through a pressure sensor bracket. The side of the pressure sensor is arranged perpendicular to the flow direction of the fluid, and a flange is installed on each docking fuel pipe.

[0011] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention fully preheats the fuel through the synergistic effect of the spiral plate and the first heating plate in the combustion preheating hood, and the inner fuel supply preheating pipe and the second heating plate. When the preheated fuel is ejected from the outer fuel nozzle and the inner fuel nozzle, it has a higher temperature and better atomization effect, thereby significantly improving the combustion efficiency. This design reduces the waste of fuel during the combustion process, reduces the exhaust gas emissions generated by incomplete combustion, achieves the purpose of energy conservation and environmental protection, and is particularly suitable for industrial scenarios that require efficient energy utilization; (2) The present invention drives the spline shaft through a servo motor, combined with the magnetic attraction of the electromagnet and the adjustment disk, and can independently control the rotation angle of the first valve body and the second valve body, thereby accurately adjusting the fuel supply flow of the first fuel pipeline and the second fuel pipeline. The pressure sensor monitors the fuel flow rate in the pipeline in real time to ensure the accuracy of the flow regulation. This precise control not only optimizes the ratio of different fuels, but also avoids combustion interruption or efficiency reduction caused by unstable flow, thus ensuring the stability of the device operation; (3) The edge fuel distribution chamber and the inner fuel distribution chamber of the present invention are respectively equipped with multiple outer fuel nozzles and inner fuel nozzles, forming a multi-nozzle coordinated arrangement structure. The fuel is evenly sprayed and ignited from different positions, avoiding the problem of flame concentration and uneven heat distribution during traditional single nozzle combustion; (4) The combustion preheating hood of the present invention is embedded with a spiral plate and a first heating plate, and the fuel supply distribution chamber is tightly connected to the inner fuel supply preheating pipe. The overall structural design is compact and reasonable. The first heating plate and the second heating plate respectively increase the heating area of the combustion preheating hood and the inner fuel supply preheating pipe, so that the heat generated by combustion is fully utilized for fuel preheating. This efficient heat transfer mechanism reduces heat energy loss and improves the overall thermal efficiency of the device; (5) The present invention supplies two different fuels through the first fuel pipe and the second fuel pipe respectively, and uses the flow regulator to independently control their respective flow rates, which can flexibly adapt to the combustion requirements of fuels of different properties (such as gas, liquid fuel). The coordinated design of the outer fuel nozzle and the inner fuel nozzle further enhances the compatibility with multiple fuels, making the device widely applicable to industrial heating, power generation and other fields, with strong versatility and practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0013] Figure 2 This is a structural diagram of the servo motor of the present invention.

[0014] Figure 3 For the present invention Figure 2 Schematic diagram of the structure at point A in the middle.

[0015] Figure 4 It is a structural schematic diagram of the valve body of the present invention.

[0016] Figure 5 This is a structural schematic diagram of the combustion preheating cover of the present invention.

[0017] Figure 6 This is a structural schematic diagram of the fuel supply distribution chamber of the present invention.

[0018] In the figure: 101-housing; 102-servo motor; 103-flow regulating body; 104-first fuel pipeline; 105-second fuel pipeline; 106-flange; 107-docking fuel pipe; 108-pressure sensor bracket; 109-pressure sensor; 110-spline shaft; 111-electromagnet; 112-adjusting disk; 113-sealing cover; 114-first valve body; 115-second valve body; 116-combustion preheating cover; 117-fuel supply distribution chamber; 118-first heated plate; 119-spiral plate; 120-edge fuel distribution chamber; 121-outer fuel flow port; 122-inner fuel supply preheating pipe; 123-second heated plate; 124-inner fuel flow port; 125-inner fuel distribution chamber; 126-outer fuel nozzle; 127-inner fuel nozzle. DETAILED DESCRIPTION

[0019] The following is combined with Figures 1-6 , and further illustrate the technical solution of the present invention through specific implementation methods.

[0020] The present invention provides a high-efficiency combustion device with a coordinated arrangement of multiple nozzles, including a combustion preheating cover 116, a peripheral fuel distribution chamber 120 fixedly mounted at the bottom of the combustion preheating cover 116, the peripheral fuel distribution chamber 120 being connected to the bottom of the combustion preheating cover 116 via an outer fuel flow passage 121, a plurality of outer fuel nozzles 126 being arranged on the peripheral fuel distribution chamber 120, an inner fuel distribution chamber 125 being fixedly mounted at the center of the peripheral fuel distribution chamber 120, and a plurality of inner fuel distribution chambers 125 being arranged on the inner fuel distribution chamber 125. The inner fuel nozzle 127 is fixedly mounted within the combustion preheating cover 116, wherein spiral plates 119 are fixedly mounted within the combustion preheating cover 116, and the spiral plates 119 are used to divide the interior of the combustion preheating cover 116 into spiral spaces. A fuel supply distribution chamber 117 is fixedly mounted at the bottom of the edge fuel distribution chamber 120, and the fuel supply distribution chamber 117 is connected to the interior of the inner fuel distribution chamber 125 via multiple inner fuel supply preheating pipes 122. A plurality of first heated plates 118 are fixedly mounted in a circular, equidistant array on the inner wall of the combustion preheating cover 116. One end of each inner fuel supply preheating pipe 122 passes through the edge fuel distribution chamber 120 and is connected to the interior of the fuel supply distribution chamber 117. The other end of each inner fuel supply preheating pipe 122 is connected to the interior of the inner fuel distribution chamber 125 via an inner fuel flow port 124 provided in the inner fuel distribution chamber 125. A second heated plate 123 is fixedly mounted between each adjacent inner fuel supply preheating pipe 122. The top of the combustion preheating cover 116 and the fuel supply distribution chamber 117 are fixedly connected to the first and second fuel pipelines 104, 105, respectively. A flow regulating body 103 is installed in series and sealed communication with the first and second fuel pipelines 104, 105. The interior of the flow regulating body 103 is divided into two independent cylindrical spaces, each of which is connected to the first and second fuel pipelines 104, 105. A first valve body 114 and a second valve body 115 are rotatably and sealedly installed in the two independent cylindrical spaces. Both valve bodies 114 and 115 have through-holes with the same inner diameter as the first and second fuel pipelines 104, 105. The top and bottom ends of the flow regulating body 103 are fixedly and sealedly mounted with sealing caps 113. Adjustment disks 112 are rotatably mounted on both sealing caps 113. A spline shaft 110 is rotatably engaged with the axial center of the first and second valve bodies 114, 115. Both adjustment disks 112 rotatably engage with the circumferential surface of the spline shaft 110. The two adjustment disks 112 pass through the sealing caps 113 and are coaxially and fixedly engaged with the corresponding first and second valve bodies 114, 115, driving the first and second valve bodies 114, 115 to rotate within the flow regulating body 103.The flow regulating body 103 is sealed externally by a housing 101, housing 101 housing a splined shaft 110 rotatably mounted on. Two electromagnets 111 are mounted on either end of the splined shaft 110 via a sliding spline mechanism. Electromagnets 111 magnetically engage with an adjustment disk 112. A servo motor 102 is fixedly mounted on housing 101, with the output shaft of servo motor 102 fixedly mating with splined shaft 110. A docking fuel pipe 107 is fixedly mounted at one end of each of the first and second fuel pipes 104, 105. A pressure sensor 109 is mounted overhead and fixedly mounted on the axial center of each docking fuel pipe 107 via a pressure sensor bracket 108. The side of the pressure sensor 109 is arranged perpendicular to the direction of fluid flow. Each docking fuel pipe 107 is mounted with a flange 106.

[0021] The operating principle of the multi-nozzle coordinated combustion device disclosed in the present invention is as follows: Two fuel supply pipes are connected to a docking fuel pipe 107 via a flange 106, and a constant fuel supply pressure is provided. A servo motor 102 is controlled, and its output shaft rotates a spline shaft 110. This rotation drives a first valve body 114 and / or a second valve body 115 within a flow control body 103, thereby adjusting the cross-sectional area of the fuel flow within the first fuel pipe 104 and / or the second fuel pipe 105, thereby regulating the fuel supply flow rate. Specifically, if the first valve body 114 and / or the second valve body 115 are to be driven to rotate, the electromagnet 111 on the corresponding side of the first valve body 114 and / or the second valve body 115 needs to be activated. When the electromagnet 111 is energized, a magnetic force is generated, causing the electromagnet 111 to be magnetically attracted to the corresponding regulating disk 112. At this time, the two are fixed as a whole. The rotation of the spline shaft 110 will always drive the electromagnet 111 to rotate. Therefore, when the two electromagnets 111 are energized, they will drive the corresponding regulating disk 112 to rotate together. Since the two regulating disks 112 are fixedly connected to the corresponding first valve body 114 and second valve body 115, they can drive the rotation of the first valve body 114 and / or the second valve body 115. The first valve body 114 controls the supply flow of fuel inside the first fuel pipeline 104, and the second valve body 115 controls the supply flow of fuel inside the second fuel pipeline 105. The pressure sensor 109 is used to detect the flow rate of fuel inside the second fuel pipeline 105 and the first fuel pipeline 104. The faster the fuel flow rate, the greater the pressure on the pressure sensor 109. The fuel flow rate is detected by the pressure sensor 109, and the flow data is used to control the servo motor 102 and the electromagnet 111 to control the rotation angle of the first valve body 114 and / or the second valve body 115.

[0022] The fuel inside the first fuel pipe 104 flows into the top of the combustion preheating cover 116, and then flows to the bottom along the spiral space inside the combustion preheating cover 116, and then enters the edge fuel distribution chamber 120 through the outer fuel flow port 121, and is ejected through the outer fuel nozzle 126 under the action of pressure. After being ejected, the fuel can be ignited. The ignited fuel will heat the first heat receiving plate 118 and the combustion preheating cover 116, wherein the function of the first heat receiving plate 118 is to increase the inner wall area of the combustion preheating cover 116 to facilitate the combustion preheating cover 116 to absorb heat. The combustion preheating cover 116 absorbs heat and preheats the fuel inside the combustion preheating cover 116, thereby improving the combustion efficiency of the fuel ejected from the outer fuel nozzle 126. The fuel inside the second fuel pipeline 105 will enter the fuel supply distribution chamber 117, and the fuel inside the fuel supply distribution chamber 117 will flow into the inner fuel distribution chamber 125 through the regulating disk 112, and then be ejected through the inner fuel nozzle 127. After the ejected fuel is ignited, it will heat the second heat plate 123 and the inner fuel supply preheating tube 122, wherein the second heat plate 123 is used to increase the heating surface area of the inner fuel supply preheating tube 122, thereby preheating the fuel inside the inner fuel supply preheating tube 122, thereby improving the combustion efficiency of the fuel.

Claims

1. A high-efficiency combustion device with multiple nozzles arranged in a coordinated manner, characterized by: The combustion preheating cover (116) comprises an edge fuel distribution chamber (120) fixedly mounted on the bottom of the combustion preheating cover (116), the edge fuel distribution chamber (120) being connected to the bottom of the combustion preheating cover (116) via an outer fuel flow opening (121), a plurality of outer fuel nozzles (126) being provided on the edge fuel distribution chamber (120), an inner fuel distribution chamber (125) being fixedly mounted at the center of the edge fuel distribution chamber (120), and a plurality of inner fuel nozzles (127) being provided on the inner fuel distribution chamber (125); A spirally arranged spiral plate (119) is fixedly installed inside the combustion preheating cover (116), and the spiral plate (119) is used to divide the interior of the combustion preheating cover (116) into a spiral space. A fuel supply distribution chamber (117) is fixedly installed at the bottom of the edge fuel distribution chamber (120), and the fuel supply distribution chamber (117) is connected to the interior of the inner fuel distribution chamber (125) through a plurality of inner fuel supply preheating pipes (122); and a plurality of first heat receiving plates (118) are fixedly installed in a circular equidistant array on the inner wall of the combustion preheating cover (116).

2. The high-efficiency combustion device with multiple nozzles arranged in a coordinated manner according to claim 1, characterized in that: One end of the inner fuel supply preheating pipe (122) passes through the edge fuel distribution chamber (120) and is connected to the interior of the fuel supply distribution chamber (117); the other end of the inner fuel supply preheating pipe (122) is connected to the interior of the inner fuel distribution chamber (125) through an inner fuel flow port (124) provided on the inner fuel distribution chamber (125); and a second heat receiving plate (123) is fixedly installed between two adjacent inner fuel supply preheating pipes (122).

3. The high-efficiency combustion device with multiple nozzles arranged in a coordinated manner according to claim 2, characterized in that: A first fuel pipeline (104) and a second fuel pipeline (105) are fixedly connected and installed on the top of the combustion preheating cover (116) and the fuel supply distribution chamber (117), respectively. A flow regulating body (103) is installed on the first fuel pipeline (104) and the second fuel pipeline (105) in a sealed manner and connected in series. The interior of the flow regulating body (103) is divided into two independent cylindrical spaces, and the two independent cylindrical spaces are connected to the first fuel pipeline (104) and the second fuel pipeline (105) respectively.

4. The high-efficiency combustion device with multiple nozzles arranged in a coordinated manner according to claim 3, characterized in that: A first valve body (114) and a second valve body (115) are respectively installed in a rotationally sealed manner in the two independent cylindrical spaces. The first valve body (114) and the second valve body (115) are both provided with through holes having the same inner diameter as the first fuel pipeline (104) and the second fuel pipeline (105).

5. The high-efficiency combustion device with multiple nozzles arranged in a coordinated manner according to claim 4, characterized in that: The top and bottom ends of the flow regulating body (103) are fixedly sealed with sealing covers (113), and the two sealing covers (113) are rotatably sealed with regulating disks (112). The axial positions of the first valve body (114) and the second valve body (115) are rotatably sealed with a spline shaft (110), wherein the two regulating disks (112) are rotatably sealed with the circumferential surface of the spline shaft (110).

6. The high-efficiency combustion device with multiple nozzles arranged in a coordinated manner according to claim 5, characterized in that: The two regulating disks (112) pass through the sealing cover (113) and are coaxially fixedly matched with the corresponding first valve body (114) and second valve body (115), and are used to drive the first valve body (114) and the second valve body (115) to rotate in the flow regulating body (103).

7. The high-efficiency combustion device with multiple nozzles arranged in a coordinated manner according to claim 6, characterized in that: The outer fixed sealing sleeve of the flow regulating body (103) is provided with a housing (101), wherein a spline shaft (110) is rotatably mounted on the housing (101), two electromagnets (111) are sleeved on both ends of the outer surface of the spline shaft (110) by spline sliding, and the electromagnets (111) are magnetically engaged with the regulating disk (112), and a servo motor (102) is fixedly mounted on the housing (101), and an output shaft of the servo motor (102) is fixedly engaged with the spline shaft (110).

8. The high-efficiency combustion device with multiple nozzles arranged in a coordinated manner according to claim 7, characterized in that: One end of the first fuel pipeline (104) and the second fuel pipeline (105) are both fixedly connected and installed with a docking fuel pipe (107). A pressure sensor (109) is fixedly installed overhead at the axial position inside each docking fuel pipe (107) through a pressure sensor bracket (108). The side of the pressure sensor (109) is arranged perpendicular to the flow direction of the fluid. A flange plate (106) is installed on each docking fuel pipe (107).

Images