Dual-fuel switching efficient combustion control system
By switching the design of the sealed cylinder and the fuel switching channel, combined with the permanent magnet friction disc and positioning contact pin, the fast and stable switching of the dual fuel system is achieved, solving the problems of slow response speed and inconsistent switching in traditional systems, and improving the flexibility and reliability of the system.
Patent Information
- Application Number
- CN202510567257.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-30
- Publication Date
- 2025-08-08
AI Technical Summary
The traditional dual-fuel combustion control system has slow response speed, inconsistent switching angles or positions, and it is prone to interruption of fuel supply or misalignment of distribution, resulting in insufficient performance in efficiency and reliability.
The switch sealed cylinder and three fuel switching channels are designed to achieve accurate switching of the fuel supply nozzle by driving the permanent magnet friction disc, combining positioning contact pins and limiting surfaces to ensure precise rotation positioning, and removing residual fuel through the fuel cleaning nozzle and the air pump.
It realizes rapid continuous and stable fuel supply, improves the flexibility and response speed of the system, reduces the risk of switching errors, enhances the reliability of the system under high load or long-term operation, and avoids the pollution of the combustion chamber by residual fuel.
Smart Images
Figure CN120444643A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of fuel control, and in particular to a high-efficiency combustion control system for dual-fuel switching. Background Art
[0002] Traditional dual-fuel combustion control systems typically use multi-way valves or independent fuel pipeline switching devices to achieve the supply of different fuels. Such systems generally use solenoid valves or mechanical valves to control the on-off flow of fuel, with complex piping connecting the fuel supply nozzle and the combustion chamber to achieve switching. However, this design has many shortcomings. First, the switching process in traditional systems relies on the coordinated action of multiple independent valves, resulting in slow response speed and prone to switching failure due to valve failure. Second, it is difficult to ensure consistent switching angles or positions, which can easily lead to fuel supply interruptions or mismatches. These issues limit the efficiency, reliability, and practicality of dual-fuel switching systems. Summary of the Invention
[0003] In order to overcome the defects of the above-mentioned prior art, the present invention provides the following technical solutions: a high-efficiency combustion control system for dual fuel switching, comprising a switching chamber, on which a first fuel supply nozzle, a fuel output nozzle, a second fuel supply nozzle and a fuel clearing nozzle are fixedly installed, wherein the first fuel supply nozzle and the second fuel supply nozzle are coaxially arranged, the fuel output nozzle is arranged perpendicular to the first fuel supply nozzle and the second fuel supply nozzle, and the axes of the first fuel supply nozzle, the fuel output nozzle and the second fuel supply nozzle are in the same plane, wherein the fuel clearing nozzle is arranged perpendicular to the axes of the first fuel supply nozzle, the fuel output nozzle and the second fuel supply nozzle, and the first fuel supply nozzle, the fuel output nozzle, the second fuel supply nozzle and the fuel clearing nozzle are internally connected; a switching sealing cylinder is installed on the internal rotating seal of the switching chamber, and three fuel switching channels with vertically arranged axes are opened in the switching sealing cylinder, the axes of the three fuel switching channels are all in the same plane, and the three fuel switching channels are aligned and connected with the first fuel supply nozzle, the fuel output nozzle and the second fuel supply nozzle, and the fuel clearing channel is coaxially connected with the fuel clearing nozzle.
[0004] Preferably, a sealing ring seat is also fixedly installed on the inner wall of the switching chamber, and the sealing ring seat rotates and seals with the end face of the switching sealing cylinder. A positioning contact pin is also fixedly installed on the switching sealing cylinder, and a positioning block is provided on the side of the positioning contact pin. The positioning block is provided with two limiting surfaces that contact and cooperate with the positioning contact pin, and the two limiting surfaces are symmetrically arranged on the positioning block.
[0005] Preferably, the positioning block is rotatably matched with the sealing ring seat, an adjusting stud is fixedly installed in the middle of the positioning block, and an adjusting nut is threadedly sleeved on the adjusting stud; a bottom sealing plate is also fixedly installed on the switching chamber, and an arc-shaped adjustment groove is provided on the bottom sealing plate, wherein the adjusting stud is arranged to slide in the arc-shaped adjustment groove, and the positioning block is fixed to the bottom sealing plate by the adjusting stud and the adjusting nut.
[0006] Preferably, a switching drive shaft is rotatably mounted on the axis of the bottom sealing plate, one end of the switching drive shaft is fixedly matched with the switching sealing cylinder, and the switching drive shaft and the switching sealing cylinder are coaxially matched.
[0007] Preferably, a top sealing plate is fixedly mounted on the bottom sealing plate, the top sealing plate is rotationally engaged with the switching drive shaft, one end of the switching drive shaft extends to the side of the top sealing plate away from the switching chamber, and a passive permanent magnet friction disk is fixedly mounted on the end of the switching drive shaft away from the switching sealing cylinder.
[0008] Preferably, the side magnetic friction of the passive permanent magnet friction disc is matched with the active permanent magnet friction disc, the active permanent magnet friction disc and the passive permanent magnet friction disc are coaxially arranged, and two symmetrically arranged toggle bumps are fixedly installed on the edge of the active permanent magnet friction disc away from the passive permanent magnet friction disc.
[0009] Preferably, the passive permanent magnet friction disc and the active permanent magnet friction disc are both rotatably mounted on the inner wall of the external sealing cover, and the external sealing cover is fixedly mounted on the top sealing plate; wherein the locking screw, the top sealing plate and the bottom sealing plate are fixedly mounted on the switching chamber by stacking multiple locking screws.
[0010] Preferably, a driving motor is fixedly mounted on the external sealing cover, a toggle cylindrical block is fixedly mounted on the output shaft of the driving motor, the toggle cylindrical block rotates in cooperation with the active permanent magnet friction disk, a toggle rod is fixedly mounted on the toggle cylindrical block along its own radial direction, the toggle rod is arranged between the two toggle protrusions, and a force-sensitive resistor is provided in contact between the toggle rod and the two toggle protrusions.
[0011] Preferably, flange docking plates are fixedly mounted on the first fuel supply nozzle, the fuel output nozzle, the second fuel supply nozzle and the fuel clean-out nozzle.
[0012] Compared with the prior art, the present invention has the following advantages: (1) The present invention can quickly switch between single fuel supplies by using the rotation design of the switching sealing cylinder and the precise alignment of the three fuel switching channels with the first fuel supply nozzle, the second fuel supply nozzle and the fuel output nozzle. This design avoids the complex pipeline switching or manual operation in the traditional system, ensures the continuity and stability of the fuel supply, and is particularly suitable for application scenarios where frequent fuel switching is required, greatly improving the flexibility and response speed of the system; (2) The present invention adopts the coordination of the positioning contact pin and the limit surface, and realizes the precise positioning of the switching sealing cylinder by adjusting the stud and the arc-shaped adjustment groove each time by 90° rotation. At the same time, the force-sensitive resistor monitors the pressure changes of the lever and the toggle protrusion in real time to ensure that the switching position is accurate. This precise control not only reduces the risk of switching errors, but also enhances the reliability of the system under high load or long-term operation; (3) The present invention uses the coordination of the fuel clearing nozzle and the air pump, so that the system can clear the residual fuel inside the fuel output nozzle when switching fuel or stopping supply, avoiding the contamination of the combustion chamber by the residual fuel or interference with the subsequent fuel supply. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention.
[0014] Figure 2 It is a structural schematic diagram of the external sealing cover of the present invention.
[0015] Figure 3 For the present invention Figure 2 Schematic diagram of the structure at point A in the middle.
[0016] Figure 4 This is a structural diagram of the switching drive shaft of the present invention.
[0017] Figure 5 It is a structural schematic diagram of the arc-shaped adjustment groove of the present invention.
[0018] Figure 6 This is a schematic diagram of the positioning block structure of the present invention.
[0019] Figure 7 This is a schematic diagram of the internal structure of the switching chamber of the present invention.
[0020] In the figure: 101-switching chamber; 102-first fuel supply nozzle; 103-fuel output nozzle; 104-second fuel supply nozzle; 105-switching sealing cylinder; 106-fuel clearing channel; 107-fuel switching channel; 108-sealing ring seat; 109-positioning contact pin; 110-positioning block; 111-adjusting stud; 112-limiting surface; 113-switching drive shaft; 114-bottom sealing plate; 115-arc-shaped adjusting groove; 116-adjusting nut; 117-top sealing plate; 118-passive permanent magnet friction disc; 119-active permanent magnet friction disc; 120-switching protrusion; 121-locking screw; 122-external sealing cover; 123-switching cylindrical block; 124-drive motor; 125-switching rod; 126-force sensitive resistor; 127-flange docking plate; 128-fuel clearing nozzle. DETAILED DESCRIPTION
[0021] The following is combined with Figure 1-Figure 7 , and further illustrate the technical solution of the present invention through specific implementation methods.
[0022] The present invention provides a high-efficiency combustion control system for dual-fuel switching, including a switching chamber 101, on which a first fuel supply nozzle 102, a fuel output nozzle 103, a second fuel supply nozzle 104 and a fuel clearing nozzle 128 are fixedly installed, wherein the first fuel supply nozzle 102 and the second fuel supply nozzle 104 are coaxially arranged, the fuel output nozzle 103 is arranged perpendicular to the first fuel supply nozzle 102 and the second fuel supply nozzle 104, the axes of the first fuel supply nozzle 102, the fuel output nozzle 103 and the second fuel supply nozzle 104 are in the same plane, wherein the fuel clearing nozzle 128 is coaxial with the first fuel supply nozzle 102, the fuel output nozzle 103 and the second fuel supply nozzle 104. The axis of the fuel supply nozzle 104 is arranged vertically, and the first fuel supply nozzle 102, the fuel output nozzle 103, the second fuel supply nozzle 104, and the fuel clearing nozzle 128 are internally connected and arranged; the switching chamber 101 is internally rotated and sealed with a switching sealing cylinder 105, and the switching sealing cylinder 105 is provided with three fuel switching channels 107 with vertical axes. The axes of the three fuel switching channels 107 are all in the same plane, and the three fuel switching channels 107 are aligned and connected with the first fuel supply nozzle 102, the fuel output nozzle 103 and the second fuel supply nozzle 104, and the fuel clearing channel 106 is coaxially connected with the fuel clearing nozzle 128. A sealing ring seat 108 is also fixedly installed on the inner wall of the switching chamber 101, and the sealing ring seat 108 rotates and seals with the end face of the switching sealing cylinder 105. A positioning contact pin 109 is also fixedly installed on the switching sealing cylinder 105, and a positioning block 110 is provided on the side of the positioning contact pin 109. The positioning block 110 is provided with two limiting surfaces 112 that contact and cooperate with the positioning contact pin 109. The two limiting surfaces 112 are symmetrically arranged on the positioning block 110. The positioning block 110 is rotatably engaged with the sealing ring seat 108. An adjusting stud 111 is fixedly mounted in the middle of the positioning block 110, and an adjusting nut 116 is threadedly mounted on the adjusting stud 111. A bottom sealing plate 114 is also fixedly mounted on the switching chamber 101. The bottom sealing plate 114 is provided with an arc-shaped adjusting groove 115, in which the adjusting stud 111 slides. The positioning block 110 is fixed to the bottom sealing plate 114 by the adjusting stud 111 and the adjusting nut 116. A switching drive shaft 113 is rotatably mounted on the axis of the bottom sealing plate 114. One end of the switching drive shaft 113 is fixedly engaged with the switching sealing cylinder 105, and the switching drive shaft 113 and the switching sealing cylinder 105 are coaxially engaged. A top sealing plate 117 is fixedly mounted on the bottom sealing plate 114, and the top sealing plate 117 rotates with the switching drive shaft 113. One end of the switching drive shaft 113 extends to the side of the top sealing plate 117 away from the switching chamber 101, and a passive permanent magnet friction disk 118 is fixedly mounted on the end of the switching drive shaft 113 away from the switching sealing cylinder 105.The passive permanent magnetic friction disc 118 is magnetically frictionally coupled to the side of the active permanent magnetic friction disc 119. The active permanent magnetic friction disc 119 is coaxially arranged with the passive permanent magnetic friction disc 118. Two symmetrically arranged toggle bumps 120 are fixedly mounted on the edge of the active permanent magnetic friction disc 119 facing away from the passive permanent magnetic friction disc 118. Both the passive permanent magnetic friction disc 118 and the active permanent magnetic friction disc 119 are rotatably mounted on the inner wall of an external sealing cover 122, which is fixedly mounted on the top sealing plate 117. The locking screws 121, top sealing plate 117, and bottom sealing plate 114 are fixedly mounted on the switching chamber 101 via multiple stacked locking screws 121. A drive motor 124 is fixedly mounted on the external sealing cover 122. A toggle cylindrical block 123 is fixedly mounted on the output shaft of the drive motor 124. The toggle cylindrical block 123 rotates in conjunction with the active permanent magnet friction disk 119. A toggle lever 125 is fixedly mounted along the toggle cylindrical block 123 along its radial direction. The toggle lever 125 is positioned between the two toggle protrusions 120. Force-sensitive resistors 126 are provided between the toggle lever 125 and the two toggle protrusions 120. A flanged docking plate 127 is fixedly mounted on the first fuel supply nozzle 102, the fuel output nozzle 103, the second fuel supply nozzle 104, and the fuel removal nozzle 128.
[0023] The working principle of a high-efficiency combustion control system for dual-fuel switching disclosed in the present invention is as follows: the switching chamber 101 is installed in the pipeline of the required switching fuel, wherein the first fuel supply nozzle 102 and the second fuel supply nozzle 104 are respectively connected to two different fuel supply pipelines through the flange docking plate 127, the fuel output nozzle 103 is connected to the combustion chamber (a device that consumes fuel) through the flange docking plate 127, and the fuel cleaning nozzle 128 is connected to the air pump through the flange docking plate 127 (a one-way valve needs to be set between the fuel cleaning nozzle 128 and the exhaust port of the air pump to prevent the fluid inside the switching chamber 101 from flowing outward through the fuel cleaning nozzle 128). By controlling the drive motor 124, the output shaft of the drive motor 124 drives the toggle cylindrical block 123 to rotate, the toggle cylindrical block 123 drives the toggle rod 125 to rotate, the toggle rod 125 drives the active permanent magnetic friction disc 119 to rotate by toggling the toggle protrusion 120, the active permanent magnetic friction disc 119 drives the passive permanent magnetic friction disc 118 to rotate by magnetic force and friction force, the passive permanent magnetic friction disc 118 drives the switching drive shaft 113 to rotate, the switching drive shaft 113 drives the switching sealing cylinder 105 to rotate, the three fuel switching channels 107 on the switching sealing cylinder 105 will rotate synchronously, and the switching sealing cylinder 105 only rotates 90° each time, such as Figure 7As shown, the three fuel switching channels 107 are in a connected state with the first fuel supply nozzle 102, the second fuel supply nozzle 104, and the fuel output nozzle 103. At this time, two different fuels will flow into the fuel output nozzle 103 (if the pressure is the same, the fuel ratio is 1:1. It should be noted that this solution only uses one fuel for supply and will not use two fuels at the same time. The above example is used for the convenience of description). At this time, after the switching sealing cylinder 105 is driven by the driving motor 124 to rotate 90°, one of the fuel switching channels 107 will be in a position of contacting the inner wall of the switching chamber 101, so that the first fuel supply nozzle 102 or the second fuel supply nozzle 104 will be in a connected state with the fuel output nozzle 103. The second fuel supply nozzle 104 will be blocked by the switching sealing cylinder 105 body, which will result in only the fuel pipeline corresponding to the first fuel supply nozzle 102 or the second fuel supply nozzle 104 being able to supply fuel to the fuel output nozzle 103 (because it is connected to the fuel output nozzle 103 through the fuel switching channel 107); when it is necessary to clear out the residual fuel inside the fuel output nozzle 103, it is only necessary to blow air into the fuel output nozzle 103 through the fuel clearing nozzle 128 to blow out the fuel inside the fuel output nozzle 103 (the fuel output nozzle 103 corresponds to the connected combustion chamber fuel supply pipeline, and the other two fuel supply pipelines cannot provide fuel supply pressure at this time).When the positioning contact pin 109 on the switching sealing cylinder 105 rotates to contact the limit surface 112, the positioning contact pin 109 can no longer rotate, and the switching sealing cylinder 105 can no longer rotate. At this time, the switching sealing cylinder 105 has just rotated 90 degrees (the adjusting screw 111 is set to slide in the arc-shaped adjusting groove 115, and the positioning block 110 can be fixed to the bottom sealing plate 114 by adjusting the nut 116. The purpose is to adjust during assembly so that the positioning contact pin 109 rotates 90 degrees and contacts the limit surface 112). At this time, relative sliding will occur between the active permanent magnetic friction disk 119 and the passive permanent magnetic friction disk 118. During this process, the force sensitive resistor 126 will detect the pressure applied by the lever 125 to the toggle protrusion 120, which is to drive the active permanent magnetic friction disk 119 to slide relative to the passive permanent magnetic friction disk 118. The force required for the rotation of the dynamic permanent magnet friction disc 119, when there is no relative sliding between the passive permanent magnet friction disc 118 and the active permanent magnet friction disc 119, the pressure detected by the force-sensitive resistor 126 is smaller than when relative sliding occurs between the passive permanent magnet friction disc 118 and the active permanent magnet friction disc 119. This is because when the active permanent magnet friction disc 119 and the passive permanent magnet friction disc 118 slide relative to each other, the friction force between the two is the maximum static friction force. Therefore, the rotation position of the switching sealing cylinder 105 can be determined by detecting the resistance value of the force-sensitive resistor 126 itself. When the resistance value of the force-sensitive resistor 126 reaches the set threshold value, the positioning contact pin 109 will contact the limit surface 112. At this time, the switching sealing cylinder 105 has just rotated 90°. Therefore, the resistance signal of the force-sensitive resistor 126 (converted into voltage) is used as a signal to stop the output shaft of the drive motor 124.
Claims
1. A high-efficiency dual-fuel switching combustion control system, characterized by: The switching chamber (101) comprises a first fuel supply nozzle (102), a fuel output nozzle (103), a second fuel supply nozzle (104) and a fuel clearing nozzle (128) fixedly mounted on the switching chamber (101), wherein the first fuel supply nozzle (102) and the second fuel supply nozzle (104) are coaxially arranged, the fuel output nozzle (103) is arranged perpendicular to the first fuel supply nozzle (102) and the second fuel supply nozzle (104), the axes of the first fuel supply nozzle (102), the fuel output nozzle (103) and the second fuel supply nozzle (104) are in the same plane, wherein the fuel clearing nozzle (128) is arranged perpendicular to the axes of the first fuel supply nozzle (102), the fuel output nozzle (103) and the second fuel supply nozzle (104), and the first fuel supply nozzle (102), the fuel output nozzle (103), the second fuel supply nozzle (104) and the fuel clearing nozzle (128) are arranged in a communication manner; A switching sealing cylinder (105) is installed in the internal rotary seal of the switching chamber (101). Three fuel switching channels (107) with vertically arranged axes are opened in the switching sealing cylinder (105). The axes of the three fuel switching channels (107) are all in the same plane, and the three fuel switching channels (107) are aligned and connected with the first fuel supply nozzle (102), the fuel output nozzle (103) and the second fuel supply nozzle (104). The fuel discharge channel (106) is coaxially connected with the fuel discharge nozzle (128).
2. The high-efficiency dual-fuel switching combustion control system according to claim 1, characterized in that: A sealing ring seat (108) is also fixedly mounted on the inner wall of the switching chamber (101), and the sealing ring seat (108) is in rotational sealing engagement with the end face of the switching sealing cylinder (105). A positioning contact pin (109) is also fixedly mounted on the switching sealing cylinder (105), and a positioning block (110) is provided on the side of the positioning contact pin (109). The positioning block (110) is provided with two limiting surfaces (112) that contact and engage with the positioning contact pin (109), and the two limiting surfaces (112) are symmetrically arranged on the positioning block (110).
3. The high-efficiency dual-fuel switching combustion control system according to claim 2, characterized in that: The positioning block (110) is rotatably matched with the sealing ring seat (108), and an adjusting stud (111) is fixedly installed in the middle of the positioning block (110), and an adjusting nut (116) is provided on the threaded sleeve of the adjusting stud (111); a bottom sealing plate (114) is also fixedly installed on the switching chamber (101), and an arc-shaped adjusting groove (115) is provided on the bottom sealing plate (114), wherein the adjusting stud (111) is set in the arc-shaped adjusting groove (115) and slides, and the positioning block (110) and the bottom sealing plate (114) are fixed by the adjusting stud (111) and the adjusting nut (116).
4. The high-efficiency dual-fuel switching combustion control system according to claim 3, characterized in that: A switching drive shaft (113) is rotatably mounted on the axis of the bottom sealing plate (114), one end of the switching drive shaft (113) is fixedly engaged with the switching sealing cylinder (105), and the switching drive shaft (113) and the switching sealing cylinder (105) are coaxially engaged.
5. The high-efficiency dual-fuel switching combustion control system according to claim 4, characterized in that: A top sealing plate (117) is fixedly mounted on the bottom sealing plate (114), and the top sealing plate (117) is rotatably engaged with the switching drive shaft (113). One end of the switching drive shaft (113) extends to a side of the top sealing plate (117) away from the switching chamber (101), and a passive permanent magnetic friction disc (118) is fixedly mounted on an end of the switching drive shaft (113) away from the switching sealing cylinder (105).
6. The high-efficiency dual-fuel switching combustion control system according to claim 5, characterized in that: The side magnetic friction of the passive permanent magnetic friction disc (118) is matched with the active permanent magnetic friction disc (119), the active permanent magnetic friction disc (119) and the passive permanent magnetic friction disc (118) are coaxially arranged, and two symmetrically arranged toggle protrusions (120) are fixedly installed at the edge position of one side of the active permanent magnetic friction disc (119) away from the passive permanent magnetic friction disc (118).
7. The high-efficiency dual-fuel switching combustion control system according to claim 6, characterized in that: The passive permanent magnetic friction disc (118) and the active permanent magnetic friction disc (119) are both rotatably mounted on the inner wall of the external sealing cover (122), and the external sealing cover (122) is fixedly mounted on the top sealing plate (117); The locking screws (121), the top sealing plate (117), and the bottom sealing plate (114) are fixedly mounted on the switching chamber (101) by stacking a plurality of locking screws (121).
8. The high-efficiency dual-fuel switching combustion control system according to claim 7, characterized in that: A driving motor (124) is fixedly mounted on the external sealing cover (122), a toggle cylindrical block (123) is fixedly mounted on the output shaft of the driving motor (124), the toggle cylindrical block (123) is rotationally matched with the active permanent magnetic friction disk (119), a toggle rod (125) is fixedly mounted on the toggle cylindrical block (123) along its own radial direction, the toggle rod (125) is arranged between the two toggle protrusions (120), and a force-sensitive resistor (126) is provided in contact between the toggle rod (125) and the two toggle protrusions (120).
9. The high-efficiency dual-fuel switching combustion control system according to claim 8, characterized in that: A flange docking plate (127) is fixedly mounted on the first fuel supply nozzle (102), the fuel output nozzle (103), the second fuel supply nozzle (104) and the fuel clearing nozzle (128).