CN113027615A - Engine using axial electrode to control combustion - Google Patents
Engine using axial electrode to control combustion Download PDFInfo
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- CN113027615A CN113027615A CN202110399838.2A CN202110399838A CN113027615A CN 113027615 A CN113027615 A CN 113027615A CN 202110399838 A CN202110399838 A CN 202110399838A CN 113027615 A CN113027615 A CN 113027615A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C9/00—Controlling gas-turbine plants; Controlling fuel supply in air- breathing jet-propulsion plants
- F02C9/26—Control of fuel supply
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C9/00—Controlling gas-turbine plants; Controlling fuel supply in air- breathing jet-propulsion plants
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Abstract
The invention discloses an engine for controlling combustion by using an axial electrode, which comprises an engine body, wherein the engine body is provided with a combustion chamber, and the engine further comprises: the axial electrode group comprises at least two axial electrodes arranged along the axial direction of the combustion chamber; and the electric field control device is electrically connected with the axial electrode group. According to the electric field generator, the axial electrode group is arranged, different voltages are applied between any two electrodes at any interval, and electric fields with different intensities are generated. Electric fields which are orthogonal to the outlet plane and have any direction and strength can be generated in the combustion area and the mixing area; in the working of the combustion chamber, a local and simple two-dimensional electric field generated by any pair of axial electrodes of the combustion area and the mixing area can be used for accurately adjusting and controlling the flame of the sweeping plane of the two-dimensional electric field on the diameter scale of the electrode.
Description
Technical Field
The disclosure belongs to the technical field of aero-engines, and particularly relates to an engine for controlling combustion by utilizing an axial electrode.
Background
In the aspect of the control technology of the aero-engine, the state control capability and the continuous adjustment capability of the engine under different working conditions have important influences on the performance, the service life and the reliability of the engine. For example, for a variable-cycle engine, the engine can work under the optimal cycle parameter by adjusting and controlling the air inflow of different ducts of the engine under different flying heights and speeds, the cycle oil consumption is greatly reduced, and the extreme speed performance of the engine is improved; for a conventional engine, by adjusting the fixed blades of the compressor and the interstage air bleeding device, accidents such as surging, stopping and the like caused by air inlet distortion of the engine can be effectively prevented; the adjustment of the thrust of the engine and the control of the thrust vector can be realized by adjusting the tail jet pipe of the engine. With the development of engine control technology, the improvement of reliability of control components and the reduction of weight and volume, various advanced control technologies are also more and more widely applied to different parts of an engine. However, in the aspect of main combustion chamber control, at present, the throttle of the flow and pressure of fuel supply can be adjusted only by adjusting a fuel pump, a fuel valve and the like, and other more effective and more precise control methods and means are lacked.
Disclosure of Invention
In order to solve at least one of the above technical problems, it is an object of the present disclosure to provide an engine that controls combustion using an axial electrode;
an engine for controlling combustion with an axial electrode, comprising an engine block having a combustion chamber therein, further comprising:
the axial electrode group is arranged in the combustion chamber and comprises at least two axial electrodes arranged along the axial direction of the combustion chamber, and the axial electrode group can generate an electric field between any two axial electrodes in the combustion chamber;
and the electric field control device is electrically connected with the axial electrode group and can control the required electric field output by the axial electrode group and control the change of the electric field.
Optionally, the combustion chamber is provided with a head area, a combustion area and a mixing area along the axial direction, the head area is provided with a head end wall, the combustion area is provided with a combustion area electrode support,
the axial electrode set includes at least 2 combustion zone axial electrodes mounted between the head end wall and the combustion zone electrode holder.
Optionally, the blending region is provided with a blending region electrode holder, and the axial electrode group comprises at least two blending region axial electrodes arranged between the combustion region electrode holder and the blending region electrode holder.
Optionally, one of the axial electrodes is a central electrode, one end of the central electrode is mounted on the combustion zone electrode support, the other end of the central electrode is suspended, and the other end of the central electrode corresponds to the position of a fuel nozzle in the combustion chamber.
Optionally, an electric field connection terminal group is arranged on the end wall of the head portion in a penetrating mode, the electric field control device is connected with the axial electrode of the combustion area through the electric field connection terminal group on the end wall of the outer head portion, and the electric field connection terminal group is further connected with the axial electrode of the mixing area penetrating through the combustion area.
Optionally, the axial electrode comprises an axial electrode inner core and a temperature-resistant axial electrode outer wall, the axial electrode outer wall is wrapped on the surface of the axial electrode inner core, and an electric field shielding shell is further arranged on the surface of the axial electrode in the blending region penetrating through the combustion region.
Optionally, the axial electrode inner core is made of platinum, rhodium, lanthanum molybdenum alloy or tungsten wire material, and the electric field shielding shell is made of temperature-resistant conductive material.
Optionally, the electric field control device includes a power supply, a transformer, a dc regulated power supply, and an electric field controller, which are connected in sequence;
the electric field controller comprises a boosting module, a voltage regulating module and an electric field excitation module, the direct current stabilized voltage power supply is electrically connected with the axial electrode group through the boosting module, the voltage regulating module and the electric field excitation module, and the electric field excitation module comprises an axial electrode alternating current electric field excitation module and/or an axial electrode direct current electric field excitation module.
Optionally, the axial electrode alternating-current electric field excitation module comprises a waveform adjusting module, a variable-frequency output module and an axial electrode alternating-current electric field excitation module; the voltage regulating module is electrically connected with the axial electrode group after sequentially passing through the waveform regulating module, the variable frequency output module and the axial electrode alternating current electric field excitation module.
Optionally, the axial electrode dc electric field excitation module includes a ballast module, a dc waveform adjustment module, and an axial electrode dc electric field excitation module; the voltage regulating module is electrically connected with the axial electrode group through the ballast module, the direct current waveform regulating module and the axial electrode direct current electric field excitation module in sequence.
In the present disclosure, an axial electrode group is provided, and different voltages are applied between any two electrodes at any interval to generate electric fields of different strengths. Thus, electric fields which are orthogonal to the outlet plane and have any direction and strength can be generated in the combustion area and the mixing area; the electric field control device controls electric field parameters such as the size, the frequency and the like of the electric field. In the working of the combustion chamber, a local and simple two-dimensional electric field generated by any pair of axial electrodes of the combustion area and the mixing area can be used for accurately adjusting and controlling the flame of a sweeping plane of the two-dimensional electric field on the diameter scale of the electrode; and 3 or more than 3 non-collinear electrodes work simultaneously, and a coupled three-dimensional complex electric field can be formed, so that the combustion characteristics in the envelope region of a plurality of electrodes can be accurately adjusted.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.
FIG. 1 is a schematic block diagram of an engine utilizing axial electrodes to control combustion in accordance with the present disclosure;
FIG. 2 is a schematic illustration of an axial electrode profile for an engine utilizing axial electrodes to control combustion according to the present disclosure;
FIG. 3 is a schematic illustration of the principle of local electric field regulation of an axial electrode in the present disclosure;
FIG. 4 is a schematic illustration of the construction of the axial electrodes of the combustion zone of the present disclosure;
FIG. 5 is a schematic structural diagram of an axial electrode in a doping region in the present disclosure
Fig. 6 is a schematic structural diagram of an electric field control device in the present disclosure.
Detailed Description
The present disclosure will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Example one
Referring to fig. 1 and 2, an engine using axial electrodes to control combustion includes an engine body a having a combustion chamber B in which fuel is combusted, and the cross section of the combustion chamber B of the engine may be a cylindrical cross section or a circular cross section, and further includes:
and the axial electrode group C is installed in the combustion chamber B, and the axial electrode group B comprises at least two axial electrodes arranged along the axial direction of the combustion chamber. The plurality of axial electrodes can be arranged in a plurality of concentric circular ring type arrays, rectangular array modes or staggered rectangular array modes; the cross section of the axial electrode can be round, so that the manufacturing is convenient, and the cross section of the axial electrode can also be rectangular, triangular or other shapes, so that the implementation of the scheme is not influenced; the number of axial electrodes may be such that the degree of density is set according to the accuracy of the electric field control.
And an electric field control device D electrically connected to the axial electrode group C and capable of controlling a required electric field output from the axial electrode group C and controlling a change in the electric field. The electric field control device D can output a dc voltage or an ac voltage, so as to control the axial electrode group C to output a dc electric field or an ac electric field, and the electric field control device D can be powered by a generator on the engine.
In the combustion process, after the fuel is ignited and combusted, dissociation occurs, and dissociated ion groups, molecular groups and free electrons with different sizes are continuously transported, collided and recombined into new ion groups, molecular groups and free electrons. When an external electric field is applied to the flame, the ion groups and the free electrons are subjected to coulomb force action of the electric field, wherein the ion groups with relatively large mass form ion wind of the flame, so that a flame component field, a concentration field and a temperature field are changed, the free electrons with negligible mass accelerate under the coulomb force on one hand, and thus the flame propagation speed is changed, and on the other hand, under the action of the joule heat effect, the electron energy is increased, so that the combustion reaction is strengthened. Therefore, in the combustion process, an electric field is applied, the combustion efficiency is hopefully improved, and products and a temperature field of combustion are controlled, so that the high-efficiency organization and active control of combustion are realized.
In one embodiment, as shown in fig. 1, the engine body a includes an air inlet 1, a fuel inlet pipe 2, an engine housing 3, a nozzle assembly 25, an outlet 11, an outer flame tube wall 22, and an inner flame tube wall 23, the combustion chamber B has a head region, a combustion region, and a blending region in sequence along an axial direction, the head region has a head end wall, the combustion region is mounted with a combustion region electrode support, and the engine housing 3 has the combustion chamber B; air enters from the air inlet 1, enters a combustion zone and a blending zone of the combustion chamber B from the outer ring cylinder wall holes 4 and the inner ring cylinder wall holes 16 after passing through the outer ring cavity area and the inner ring cavity area, fuel is introduced into the nozzle assembly 25 through the fuel inlet pipe 2, the fuel is sprayed into the combustion chamber B through the nozzle assembly, and the fuel and the air are sprayed out from the outlet 11 after being combusted in the combustion chamber B.
Since the combustion form is different between the combustion zone and the blending zone, in the present embodiment, the electric field is controlled separately for both the combustion zone and the blending zone;
the nose region has a nose end wall 39, the nose end wall 39 having the nozzle assembly 25 and swirler 24 mounted thereon, the combustion region having a combustion region electrode holder 42 mounted thereon, and the axial electrode assembly C comprising at least 2 combustion region axial electrodes 9 mounted between the nose end wall 39 and the combustion region electrode holder 42. By arranging the combustion area axial electrodes 9, the electric field control device D can control the electric field generated between two adjacent combustion area axial electrodes 9 in the combustion area. By separately arranging the combustion zone axial electrode 9 in the combustion zone, parameters such as the direction and the size of an electric field in the combustion zone can be separately controlled through the combustion zone axial electrode 9.
The blending zone is fitted with a blending zone electrode holder 46 and the axial electrode assembly C comprises at least two blending zone axial electrodes 10 fitted between the combustion zone electrode holder 42 and the blending zone electrode holder 46. By separately arranging the axial electrode 10 in the mixing region, the parameters of the mixing region, such as the direction and the size of an electric field, can be separately controlled by the axial electrode 10 in the mixing region.
One of the axial electrodes is a central electrode 7, one end of the central electrode 7 is mounted on the combustion zone electrode support 42, the other end of the central electrode 7 is suspended, and the other end of the central electrode 7 corresponds to the position of a fuel nozzle in the combustion chamber. By arranging the central electrode, an electric field can be formed between the central electrode and the axial electrode 10 of the mixing region, and parameters such as the size, the direction and the like of the electric field are controlled by the electric field control device D. The central electrode 7 is more rigid than the combustion zone axial electrode 9 and the bulk zone axial electrode assembly 10.
In one embodiment, the electric field terminal set 6 is disposed on the head end wall 39, the electric field control device C is connected to the combustion zone axial electrode 9 through the electric field terminal set 6 on the outer head end wall 39, the other end of the combustion zone axial electrode 9 is connected to the combustion zone electrode support 42 in an insulated manner, the blending zone axial electrode 10 can be disposed to pass through the combustion zone and the blending zone, and the electric field terminal set 6 is further connected to the blending zone axial electrode 10 passing through the combustion zone. If the mixing zone axial electrode 10 only needs to adjust the mixing zone voltage, part of the combustion zone needs to be wrapped by the electromagnetic shielding layer. When the axial electrode passing through the combustion zone and the mixing zone is not wrapped with the electromagnetic shielding layer, the combustion zone part of the axial electrode is used as the combustion zone axial electrode 9, the mixing zone part is used as the mixing zone electrode, and the electric field control device C integrally controls the same voltage.
Referring to fig. 3, a pair of axial electrodes m and n is selected, the distance between the centers of the two electrodes is L, wherein the position of the axial electrode n is r1 from the center of the nozzle, and the position of the electrode m is r2 from the center of the nozzle. In operation, at any time t, the electric field control device C can output a voltage U (m, r) to the electrode m2T) output a voltage U (n, r) to the electrode n1T), the electric field intensity formed between the electrodes m, n is:
obviously, different voltages U (i, r) are applied between any two electrodes at any intervaliT), electric fields of different strengths can be generated according to the formula. In this way, an electric field of arbitrary direction and intensity orthogonal to the plane of the outlet of the swirler 24 can be generated in the combustion zone and the mixing zone.
The central electrode 7 can also be energized during operation, with a voltage U0(t), it is obvious that when the center electrode 7 is electrified, any one of the combustion zone axial electrodes n can generate an electric field which is orthogonal to the outlet plane of the swirler 24 and has any direction along the radial direction with the center electrode 7, and the electric field intensity is:
in the working of the combustion chamber, a local and simple two-dimensional electric field generated by any pair of axial electrodes of the combustion area and the mixing area can be used for accurately adjusting and controlling the flame of a sweeping plane of the two-dimensional electric field on the diameter scale of the electrode; and 3 or more than 3 non-collinear electrodes work simultaneously, and a coupled three-dimensional complex electric field can be formed, so that the combustion characteristics in the envelope region of a plurality of electrodes can be accurately adjusted.
In particular, the combustion zone axial electrode 9 and the mixing zone axial electrode 10 are of a filament structure, the diameter of which is also as small as possible, so as to prevent large disturbance to the flow in the main combustion chamber, the axial electrode comprises an axial electrode inner core 36 and a temperature-resistant axial electrode outer wall 37, the axial electrode inner core 36 is made of platinum, rhodium, lanthanum molybdenum alloy or tungsten wire material, the surface of the axial electrode inner core 36 is wrapped with the axial electrode outer wall 37, the electrode outer wall 37 is a coating or armor layer made of ceramic materials such as alumina and zirconia or other insulating and compact materials, so that the axial electrode is not directly contacted with gas or air in the working process, ablation or corrosion is prevented, and the surface of the axial electrode 10 in the mixing area penetrating through the combustion area is also provided with an electric field shielding shell 38. The electric field shielding shell 38 is made of a temperature-resistant conductive material. The axial electrode outer wall 37 and the additionally added cavity or insulating material ensure that the axial electrode outer wall is not communicated with the axial electrode inner core 36. Thus, part of the axial electrode 10 in the mixing region does not act on other electrodes in the combustion region to form a potential difference so as to generate an electric field, and the electric field is only generated in the mixing region, namely only acts on the mixing region.
The structure of the central electrode 7 is similar to that of an axial electrode, namely, the inner core of the electrode is made of platinum, rhodium, lanthanum molybdenum alloy or tungsten wire, so that the requirements on conductivity and heat resistance are met when the central electrode works in a main combustion chamber. The outer wall of the electrode is a coating made of ceramic materials such as alumina and zirconia or other insulating and compact materials, so that the central electrode 7 is ensured not to be directly contacted with gas or air in the working process, and ablation or corrosion is prevented. The central electrode 7 needs to have higher rigidity in the selection aspect of inner core and outer wall armor layer materials, and in diameter, because the nozzle jet fuel usually has an atomizing nozzle angle, the fuel concentration is lower in the central area, and under the effect of the swirler 24, the fuel liquid fog entering the combustion area and the swirl number of air are both larger, and the fuel liquid fog and the swirl number of air move towards the direction of throwing away from the central axis of the nozzle under the effect of centrifugal force, so the diameter of the central electrode 7 collinear with the central axis of the nozzle can be designed thicker without worrying about that the central electrode excessively disturbs the airflow flowing in the main combustion chamber. Thus, the design mode that only one end of the main combustion chamber is fixedly connected with the combustion area electrode bracket 42 and the other end of the main combustion chamber is suspended can be ensured, and higher stability and rigidity can be still kept in the main combustion chamber.
The inner flame tube wall electrode and the outer flame tube wall electrode both comprise an annular electrode inner core 41 and an anti-ablation coating 40, and the exposed surface of the annular electrode 41 is wrapped with the anti-ablation coating 40. The annular electrode inner core 41 is used for electrifying and forming an electric field; the anti-ablation coating 40 serves to protect the ring electrode core 41. The outer flame tube wall 22 or the inner flame tube wall 23 and the anti-ablation coating 40 are used for sealing and wrapping the annular electrode inner core 41. The annular electrode core 41 can work in an environment isolated from the outside air and not directly contacted with high-temperature fuel gas, thereby ensuring that the annular electrode core is not ablated or oxidized and corroded. The annular electrode core 41 is made of metal materials with good heat resistance and electric conductivity, such as platinum, rhodium, tungsten and the like, or alloy materials thereof. The outside of the electrode can also be made by adopting enamel, heat-resistant coating or ceramic armor technology to ensure air isolation.
Example two
Referring to fig. 1, the electric field control device D includes a power supply 33, a transformer 31, a dc regulated power supply 29, and an electric field controller 27, which are connected in sequence; the power source 33 may be an on-board generator, and the engine 34 drives the on-board generator to generate power, and the generated power is transmitted to the transformer 31 through the on-board cable 32 to be changed into ac power with a specific pressure, and then transmitted to the dc stabilized power supply 29 through the on-board cable 30. The ac power with a specific pressure is further filtered, stabilized and ballasted by the dc voltage-stabilized power supply 29, and dc power with a constant voltage, current and waveform is output and is transmitted to the electric field controller 27 through the on-board cable 28. The electric field controller 27 is provided with a switchable buck-boost circuit, an inverter circuit, a chopper circuit, a frequency conversion circuit and a switch, and can output a plurality of independent electric signals with variable alternating current and direct current, adjustable voltage, adjustable waveform and adjustable frequency through the controller output terminal 26 according to control requirements and control signals. One of the terminals 26 is connected with the axial electrode group C through the head bus 19 and the head-level electric field sub-cable group 20, and the electric field controller 27 can control each electrode independently.
Referring to fig. 6, the electric field controller 27 includes a voltage boosting module 271, a voltage regulating module 272, and an electric field excitation module, the dc voltage stabilizing power supply 29 is electrically connected to the axial electrode group C through the voltage boosting module 271, the voltage regulating module 272, and the electric field excitation module includes an axial electrode ac electric field excitation module and/or an axial electrode dc electric field excitation module. The voltage boosting module 271 outputs constant-value high-voltage alternating current to the voltage regulating module 272, the voltage regulating module 272 has multi-path adjustable pressure output capacity and is used for regulating voltage variable, the axial electrode alternating current electric field excitation module can output high-voltage high-frequency electricity to control the electric field generating device C to generate a high-voltage high-frequency electric field; the axial electrode direct current electric field excitation module can output high-voltage direct current to control the electric field generating device C to generate a high-voltage direct current electric field.
The axial electrode alternating current electric field excitation module comprises a waveform adjusting module 273, a frequency conversion output module 274 and an axial electrode alternating current electric field excitation module 275; the voltage regulating module 272 is electrically connected with the axial electrode group C after sequentially passing through the waveform regulating module 273, the frequency conversion output module 274 and the axial electrode alternating current electric field excitation module 275. The voltage regulating module 272 outputs the regulated alternating current to a waveform regulating module 273 (alternating current) and a ballast module 276 (direct current) respectively, wherein the waveform regulating module 273 has multi-input and multi-output capabilities and is used for realizing the experimental variable regulation of the alternating current waveform. The waveform-adjusted alternating current is subjected to frequency conversion output module 274 to realize adjustment of the frequency of the multiple paths of alternating current. The frequency conversion output module 274 also has multi-input and multi-output capabilities, and can output alternating currents with different voltages and waveforms according to given different experimental frequency values.
Specifically, the axial electrode dc electric field excitation module includes a ballast module 276, a dc waveform adjustment module 277, and an axial electrode dc electric field excitation module 278; the voltage regulating module 272 is electrically connected with the axial electrode group C through the ballast module 276, the direct current waveform regulating module 277 and the axial electrode direct current electric field exciting module 278 in sequence. The ballast module 276 has multi-path ac input and multi-path dc output regulation capabilities and is configured to convert ac power of different voltages into dc power of different voltages.
The whole set of system is controlled and regulated by an electric field driving combustion control system, the electric field driving combustion control system inputs a control instruction and a control target through an upper computer, and outputs a control signal to a voltage regulating module 272, a waveform regulating module 273, a variable frequency output module 274, a ballast module 276 and a direct current waveform regulating module 277. The control mode can be open loop, and can also adopt closed loop control of feedback regulation according to the combustion pressure measured in the combustion chamber and the flame temperature of a specific area.
The advantages of the present disclosure are:
(1) active lean combustion instability control
According to the method, the electric field is utilized to apply volume force to the flame near the combustion instability working point of the combustion chamber, so that the effects of increasing disturbance transmission and developing damping and inhibiting the amplitude of oscillation combustion instability are achieved, and active control over lean oil combustion instability is achieved.
(2) Main combustion chamber outlet temperature field regulation
According to the electric field combustion chamber, in different areas in the combustion chamber, the electric field force is applied to the charged ions in the local area of the flame by using the electric field, and the flame shape, the local combustion components and the concentration of the intermediate product are driven to change, so that the effect of adjusting the heat release of local combustion is achieved, and the adjustment of the outlet temperature field of the main combustion chamber is realized.
(3) Regulation of combustion characteristics at transient and partial operating points
This application can be in the combustion chamber individual under the transition operating mode between the operating mode point that does not reach the design point performance completely and the different operating mode points to and under the special circumstances such as the distortion of engine air admission, take place surge, to the combustion performance or the emission problem of different grade type, if emit black cigarette, the burning is insufficient, export hot spot, flame-out etc. utilize the effect of electric field to flame, realize the regulation of different degrees.
In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.
Claims (10)
1. An engine for controlling combustion using an axial electrode, comprising an engine block having a combustion chamber therein, characterized by further comprising:
the axial electrode group is arranged in the combustion chamber and comprises at least two axial electrodes arranged along the axial direction of the combustion chamber, and the axial electrode group can generate an electric field between any two axial electrodes in the combustion chamber;
and the electric field control device is electrically connected with the axial electrode group and can control the required electric field output by the axial electrode group and control the change of the electric field.
2. The engine utilizing axial electrodes to control combustion as set forth in claim 1, wherein: the combustion chamber is internally provided with a head area, a combustion area and a mixing area in sequence along the axial direction, the head area is provided with a head end wall, the combustion area is provided with a combustion area electrode bracket,
the axial electrode set includes at least 2 combustion zone axial electrodes mounted between the head end wall and the combustion zone electrode holder.
3. The engine utilizing axial electrodes to control combustion as set forth in claim 2, wherein: the mixing region is provided with a mixing region electrode support, and the axial electrode group comprises at least two mixing region axial electrodes arranged between the combustion region electrode support and the mixing region electrode support.
4. The engine utilizing axial electrodes to control combustion as set forth in claim 2, wherein: one of the axial electrodes is a central electrode, one end of the central electrode is installed on the combustion area electrode support, the other end of the central electrode is suspended, and the other end of the central electrode corresponds to the position of a fuel nozzle in the combustion chamber.
5. An engine utilizing axial electrodes to control combustion as set forth in claim 3, wherein: an electric field wiring terminal group penetrates through the end wall of the head part, the electric field control device is connected with the axial electrode of the combustion area through the electric field wiring terminal group on the end wall of the outer head part, and the electric field wiring terminal group is also connected with the axial electrode of the mixing area penetrating through the combustion area.
6. The engine utilizing axial electrodes to control combustion as set forth in claim 5, wherein: the axial electrode comprises an axial electrode inner core and a temperature-resistant axial electrode outer wall, the axial electrode outer wall is wrapped on the surface of the axial electrode inner core, and an electric field shielding shell is further arranged on the surface of the axial electrode in the mixing region penetrating through the combustion region.
7. The engine with axial electrode controlled combustion of claim 6, characterized in that the axial electrode core is made of platinum, rhodium, lanthanum molybdenum alloy or tungsten wire material and the electric field shielding shell is made of temperature resistant conductive material.
8. The engine utilizing axial electrodes to control combustion as set forth in claim 1, wherein: the electric field control device comprises a power supply, a transformer, a direct current stabilized voltage power supply and an electric field controller which are connected in sequence;
the electric field controller comprises a boosting module, a voltage regulating module and an electric field excitation module, the direct current stabilized voltage power supply is electrically connected with the axial electrode group through the boosting module, the voltage regulating module and the electric field excitation module, and the electric field excitation module comprises an axial electrode alternating current electric field excitation module and/or an axial electrode direct current electric field excitation module.
9. The engine utilizing axial electrodes to control combustion as set forth in claim 8, wherein: the axial electrode alternating current electric field excitation module comprises a waveform adjusting module, a variable frequency output module and an axial electrode alternating current electric field excitation module; the voltage regulating module is electrically connected with the axial electrode group after sequentially passing through the waveform regulating module, the variable frequency output module and the axial electrode alternating current electric field excitation module.
10. The engine utilizing axial electrodes to control combustion as set forth in claim 8, wherein: the axial electrode direct current electric field excitation module comprises a ballasting module, a direct current waveform adjusting module and an axial electrode direct current electric field excitation module; the voltage regulating module is electrically connected with the axial electrode group through the ballast module, the direct current waveform regulating module and the axial electrode direct current electric field excitation module in sequence.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113027615B (en) | 2022-11-04 |
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