阅读说明：本技术 一种基于热沉式的法拉第型磁流体发电通道装置 (Faraday type magnetohydrodynamic electricity generation channel device based on heat sink type ) 是由 高岭 王卫民 张百灵 陈小林 李博 惠晓晖 陈威仰 王阳 于 2019-12-18 设计创作，主要内容包括：本发明公开了一种基于热沉式的法拉第型磁流体发电通道装置,包括支撑框架；两个发电组块安装在支撑框架上,包括通过电极拉紧螺栓连接的相互平行的两个头部发电电极、多个中间发电电极和电极间绝缘垫片,两个头部发电电极之间设有多个中间发电电极,且多个中间发电电极之间设有电极间绝缘垫片。本发明针对磁流体发电通道的实际工作条件,提出用于磁流体发电的热沉式发电通道装置,其中发电部分为整体模块,更换时较为方便,通道可靠性高,通道密封多采用台阶,嵌套等机械密封方式,减少了连接件的使用,且通道主体采用紫铜等导热性较好的材料加工,可以很快的进行热量的传递与吸收,避免了冷却水的使用,提高了磁流体发电通道的效率。(The invention discloses a Faraday type magnetohydrodynamic power generation channel device based on a heat sink type, which comprises a supporting frame; two electricity generation module blocks are installed on braced frame, include through two head electricity generation electrodes, a plurality of middle electricity generation electrode and the electrode insulation gasket that are parallel to each other of electrode tie bolt connection, are equipped with a plurality of middle electricity generation electrodes between two head electricity generation electrodes, and are equipped with the electrode insulation gasket between a plurality of middle electricity generation electrodes. The invention provides a heat sink type power generation channel device for magnetofluid power generation aiming at the actual working conditions of a magnetofluid power generation channel, wherein a power generation part is an integral module, the replacement is more convenient, the reliability of the channel is high, the channel is sealed by adopting mechanical sealing modes such as steps, nesting and the like, the use of connecting pieces is reduced, and a channel main body is processed by adopting materials with better heat conductivity such as red copper and the like, so that the heat can be quickly transmitted and absorbed, the use of cooling water is avoided, and the efficiency of the magnetofluid power generation channel is improved.)

1. The utility model provides a Faraday type magnetic current body electricity generation channel device based on heat sinks formula which characterized in that: comprises two power generation blocks, a supporting frame, two insulating pieces, an electrode tensioning bolt, a head power generation electrode, a middle power generation electrode, a third insulating gasket (15) and an inter-electrode insulating gasket,

the two power generation modules are arranged on the supporting frame at intervals, the two insulating pieces are perpendicular to the power generation modules and are arranged between the two power generation modules, the two insulating pieces are parallel to each other, the third insulating gasket is arranged between the insulating pieces and the joints of the power generation modules, and the two power generation modules and the two insulating pieces form a hollow cavity;

the power generation module comprises two head power generation electrodes, a plurality of middle power generation electrodes and an inter-electrode insulation gasket, wherein the two head power generation electrodes, the middle power generation electrodes and the inter-electrode insulation gasket are arranged in parallel; the electrode tensioning bolt penetrates through the axle centers of the head power generation electrode, the middle power generation electrode and the inter-electrode insulating gasket to connect the head power generation electrode, the middle power generation electrode and the inter-electrode insulating gasket into a whole.

2. A faraday-type mhd channel device based on heat sink type according to claim 1, wherein: the supporting frame comprises four tensioning screws, eight fastening nuts, two connecting flanges and two transition pieces, the transition pieces are installed between the connecting flanges which are arranged in parallel, the transition pieces and the connecting flanges are perpendicular to each other, two end faces of the transition pieces, which are close to the connecting flanges, are provided with a stage, the stage is connected with the inner side of the connecting flanges in a laminating mode, and the four tensioning screws penetrate through the two connecting flanges and are compressed through the eight fastening nuts.

3. A faraday-type mhd channel device based on heat sink type according to claim 2, characterized in that: the power generation module is characterized by further comprising two first insulating gaskets (4), wherein the two first insulating gaskets are installed between the two transition pieces and located on two sides of the power generation module, the end faces of the first insulating gaskets are provided with stage stages, and the stage stages are attached to the inner sides of the transition pieces and connected with the inner sides of the transition pieces.

4. A faraday-type mhd channel device based on heat sink type according to claim 3, wherein: the power generation device is characterized by further comprising an upper cover plate, a lower cover plate and two second insulating gaskets (7), wherein the two second insulating gaskets (7) are oppositely arranged at two ends of the two power generation blocks, the two second insulating gaskets (7) are respectively arranged between the upper cover plate, the lower cover plate and the two power generation blocks, the end face of each second insulating gasket (7) is provided with a stage, and the stage is connected with the inner side of the transition piece in a laminating mode.

5. A heat sink based Faraday type MHD power generation channel device according to claim 4, wherein: the power generation device is characterized by further comprising a protection piece and a power generation block fastening bolt, wherein the end faces of the two sides of the middle power generation electrode and the end face of the head power generation electrode are provided with a stage, the stage is attached to the insulation piece, the protection piece is installed on the outer side of the insulation piece, and the power generation block fastening bolt stretches into the upper cover plate and penetrates through the protection piece to be connected with the lower cover plate.

6. A heat sink based Faraday type MHD power generation channel device according to any of claims 1-5, wherein: the connecting flange, the transition piece, the upper cover plate, the lower cover plate and the protection piece are all made of red copper.

7. A heat sink based Faraday type MHD power generation channel device according to any of claims 1-5, wherein: the first insulating gasket (4), the second insulating gasket (7), the third insulating gasket (15), the inter-electrode insulating gasket, the electrode tensioning bolt, the insulating part and the power generation module fastening bolt are all made of boron nitride ceramics.

Technical Field

The invention belongs to the technical field of plasma heating equipment, and particularly relates to a Faraday type magnetohydrodynamic power generation channel device based on a heat sink type.

Background

The magnetohydrodynamic power generation is a power generation mode for directly extracting energy from high enthalpy gas, and the mode does not need the conversion process of mechanical parts and mainly cuts magnetic induction lines in a channel through conductive fluid to generate induced electromotive force for extracting electric energy. The magnetohydrodynamic power generation has wide application prospect in the technical field of airborne power supply of hypersonic aircrafts, and has important significance in relevant ground test research.

The mhd channel is the core of mhd power extraction, where the thermo-electro-magnetic conversion process takes place within the device. In different application fields, the structure and the operation principle of the magnetofluid power generation channel are different, and at present, research and development work aiming at the magnetofluid power generation channel mainly focuses on a linear magnetofluid channel with simple structure, clear principle and higher efficiency. According to different principles, the linear magnetofluid power extraction channel is divided into a continuous electrode type, a segmented Faraday type, a Hall type and a diagonal type. The segmented Faraday type magnetohydrodynamic power generation channel is clear in principle, simple in structure and good in stability, and is widely applied to magnetohydrodynamic power generation systems with small Hall parameters and small channel sizes.

The magnetofluid channel is a key part for realizing magnetofluid power generation, and in engineering, a magnetofluid power generation working medium is obtained by generally injecting an ionized seed into high-temperature fuel gas. In this case, the temperature of the fluid flowing through the power generation channel is generally above 2000K, and the long-term stable operation under high temperature conditions is a major technical problem for designing the magnetohydrodynamic power generation channel, and the high temperature may cause problems such as wall ablation, electrode surface oxidation, channel thermal deformation and the like to the power generation channel. The high-temperature fuel gas is usually obtained by burning hydrocarbon fuel, the problem of carbon deposition can also occur on the inner surface of the channel along with the change of working conditions, and in the process of adding the ionized seeds, because the fluid flow velocity is high, the fluid flow velocity often reaches critical sonic velocity or supersonic velocity, the ionized seeds can generate erosion action on the inner wall of the channel, all the factors can influence the normal work of the channel, and further influence the efficiency of the magnetofluid power generation.

At present, a water cooling mode is often adopted in the design of a magnetofluid power generation device, although the mode can reduce the temperature resistance requirement on materials, the water cooling mode can reduce the temperature of a position close to an electrode, further the conductivity of the position is reduced, the electrode voltage drop of the position close to the electrode is directly increased, and both the power density and the electrical efficiency basically decrease linearly along with the electrode voltage drop.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a heat sink type magnetic fluid power generation channel device for magnetic fluid power generation aiming at the actual working conditions of the magnetic fluid power generation channel.

In order to solve the technical problem, the technical scheme of the invention is as follows: a Faraday type magnetohydrodynamic electricity generation channel device based on a heat sink type comprises two electricity generation blocks, a supporting frame, two insulating pieces, an electrode tensioning bolt, a head electricity generation electrode, a middle electricity generation electrode, a third insulating gasket and an inter-electrode insulating gasket;

the two power generation modules are arranged on the supporting frame at intervals, the two insulating pieces are perpendicular to the power generation modules and are arranged between the two power generation modules, the two insulating pieces are parallel to each other, the third insulating gasket is arranged between the insulating pieces and the joints of the power generation modules, and the two power generation modules and the two insulating pieces form a hollow cavity;

the power generation module comprises two head power generation electrodes, a plurality of middle power generation electrodes and an inter-electrode insulation gasket, wherein the two head power generation electrodes, the middle power generation electrodes and the inter-electrode insulation gasket are arranged in parallel; the electrode tensioning bolt penetrates through the axle centers of the head power generation electrode, the middle power generation electrode and the inter-electrode insulating gasket to connect the head power generation electrode, the middle power generation electrode and the inter-electrode insulating gasket into a whole.

Preferably, the supporting frame comprises four tensioning screws, eight fastening nuts, two connecting flanges and two transition pieces, the transition pieces are installed between the two connecting flanges which are arranged in parallel, the transition pieces and the connecting flanges are perpendicular to each other, two end faces of the transition pieces, which are close to the connecting flanges, are provided with a stage, the stage is connected with the inner side of the connecting flanges in a laminating manner, and the four tensioning screws penetrate through the two connecting flanges and are compressed through the eight fastening nuts.

Preferably, the power generation module further comprises two first insulating gaskets, wherein the two first insulating gaskets are installed between the two transition pieces and located on two sides of the power generation module, the end faces of the first insulating gaskets are provided with stage stages, and the stage stages are attached and connected with the inner sides of the transition pieces.

Preferably, the power generation device further comprises an upper cover plate, a lower cover plate and two second insulating gaskets, the two second insulating gaskets are oppositely arranged at two ends of the two power generation blocks, the two second insulating gaskets are respectively arranged between the upper cover plate, the lower cover plate and the two power generation blocks, the end faces of the second insulating gaskets are provided with a stage, and the stage is connected with the inner side of the transition piece in a fitting mode.

Preferably, the power generation device further comprises a protection piece and a power generation block fastening bolt, wherein the two side end faces of the middle power generation electrode and the head power generation electrode are provided with stage stages, the stage stages are attached to the insulation piece, the protection piece is installed on the outer side of the insulation piece, and the power generation block fastening bolt extends into the upper cover plate and penetrates through the protection piece to be connected with the lower cover plate.

Preferably, the connecting flange, the transition piece, the upper cover plate, the lower cover plate and the protecting piece are all made of red copper.

Preferably, the first insulating gasket, the second insulating gasket, the third insulating gasket, the inter-electrode insulating gasket, the electrode tightening bolt, the insulating member, and the power generation block fastening bolt are all made of boron nitride ceramics.

Compared with the prior art, the invention has the advantages that:

(1) the invention modularizes the generating electrode which is easy to be lost, is easy to be replaced when in use, reduces the complexity of the work, improves the efficiency and is convenient for industrial application;

(2) the invention provides a heat sink type power generation channel device for magnetofluid power generation aiming at the actual working conditions of a magnetofluid power generation channel, wherein the channel main body is made of materials with better heat conductivity, such as red copper, and the like, and the red copper with excellent heat sink property can quickly transmit and absorb heat, thereby avoiding the use of cooling water, improving the efficiency of the magnetofluid power generation channel, having good machinability of the red copper, assembling the channel, being more convenient for replacing a power generation section and having high reliability of the channel;

(3) the magnetofluid power generation channel is sealed by adopting mechanical sealing modes such as steps, nesting and the like, so that the use of connecting pieces is reduced, and the reliability of the channel is improved;

(4) the invention has the advantages of simple structure, long service life, safety, environmental protection, low cost, time and labor saving and improvement of industrial production efficiency.

Drawings

FIG. 1 is a schematic structural diagram of a Faraday type magnetohydrodynamic generation channel device based on a heat sink type according to the present invention;

FIG. 2 is a schematic structural diagram of a power generation module of a Faraday type magnetic fluid power generation channel device based on a heat sink type according to the present invention;

description of reference numerals:

1. the device comprises a fastening nut 2, a tensioning screw rod 3, an electrode fastening nut 4, a first insulating gasket 5 and a power generation module fastening bolt;

6-1, an upper cover plate, 6-2 and a lower cover plate;

7. the electrode structure comprises a second insulating gasket, 8, an electrode tensioning bolt, 9, a connecting flange, 10, a hollow cavity, 11, a transition piece, 12, a head power generation electrode, 13, an inter-electrode insulating gasket, 14, an intermediate power generation electrode, 15, a third insulating gasket, 16, a protection piece, 17 and an insulating piece.

Detailed Description

The following describes embodiments of the present invention with reference to examples:

it should be noted that the structures, proportions, sizes, and other elements shown in the specification are included for the purpose of understanding and reading only, and are not intended to limit the scope of the invention, which is defined by the claims, and any modifications of the structures, changes in the proportions and adjustments of the sizes, without affecting the efficacy and attainment of the same.

In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.

As shown in figures 1-2, the invention discloses a heat sinking based Faraday type magnetohydrodynamic generation channel device, which comprises two power generation blocks, a supporting frame, two insulating pieces 17, an electrode tensioning bolt 8, a head power generation electrode 12, a middle power generation electrode 14, a third insulating gasket 15 and an inter-electrode insulating gasket 13,

the two power generation modules are arranged on the supporting frame at intervals, the two insulating pieces 17 are perpendicular to the power generation modules and are arranged between the two power generation modules, the two insulating pieces 17 are parallel to each other, the third insulating gasket 15 is arranged between the connecting positions of the insulating pieces 17 and the power generation modules, and the two power generation modules and the two insulating pieces 17 form a hollow cavity;

the power generation module comprises two head power generation electrodes 12, a plurality of middle power generation electrodes 14 and an inter-electrode insulation gasket 13 which are arranged in parallel, wherein the plurality of middle power generation electrodes 14 are arranged between the two head power generation electrodes 12, and the inter-electrode insulation gasket 13 is arranged between the plurality of middle power generation electrodes 14; the electrode tightening bolts 8 pass through the axial centers of the head power generation electrode 12, the intermediate power generation electrode 14 and the inter-electrode insulation spacer 13 to connect them together.

The head generating electrode 12 and the middle generating electrode 14 are made of materials with good electric and thermal conductivity such as tungsten alloy and molybdenum alloy;

specifically, the supporting frame comprises four tensioning screws 2, eight fastening nuts 1, two connecting flanges 9 and two transition pieces 11, the transition pieces 11 are installed between the two connecting flanges 9 which are arranged in parallel, the transition pieces 11 are perpendicular to the connecting flanges 9, two end faces, close to the connecting flanges 9, of the transition pieces 11 are provided with a stage, the stage is connected with the inner sides of the connecting flanges 9 in an attached mode, and the four tensioning screws 2 penetrate through the two connecting flanges 9 and are pressed through the eight fastening nuts 1. Whole electricity generation passageway is fixed through fastening nut 1 and tensioning screw 2, prevents when the temperature is higher that the part can not damage because of the assembly tension, and overall structure is simple, and stability is high.

The connecting flange 9 and the transition piece 11 are made of materials with good heat conductivity such as red copper, and during machining, the transition piece 11 and the connecting flange 9 are in clearance fit, and when the temperature is high, parts cannot be damaged due to over-tight assembly.

Specifically, the power generation module further comprises two first insulating gaskets 4 which are arranged between the two transition pieces 11 and located on two sides of the power generation module, and the end faces of the first insulating gaskets 4 are provided with stage stages which are in fit connection with the inner sides of the transition pieces 11. The first insulating gasket 4 is made of materials such as boron nitride ceramics with good insulativity, temperature resistance and impact resistance, the edge of the boron nitride ceramics is processed into a step shape, when a channel is compressed, the step edge can play a good sealing effect, other connecting pieces are not needed for sealing, and the problem of thermal deformation of the connecting pieces is avoided.

The power generation device comprises an upper cover plate, a lower cover plate and two second insulating gaskets 7, wherein the two second insulating gaskets 7 are oppositely arranged at two ends of two power generation blocks, the two second insulating gaskets 7 are respectively arranged between the upper cover plate 6-1, the lower cover plate 6-2 and the two power generation blocks, the end face of each second insulating gasket 7 is provided with a stage, and the stage is connected with the inner side of a transition piece in a fit mode.

Specifically, the power generation device further comprises a protection piece 16 and a power generation block fastening bolt 5, wherein the two side end faces of the middle power generation electrode 14 and the head power generation electrode 12 are provided with stage stages, the stage stages are attached to and connected with an insulation piece 17, the protection piece 16 is installed on the outer side of the insulation piece, and the power generation block fastening bolt 5 extends into the upper cover plate 6-1 and penetrates through the protection piece 16 to be connected with the lower cover plate 6-2; the cover plate and the protection member 16 are made of a material with good thermal conductivity, such as red copper. The channel sealing mostly adopts mechanical sealing modes such as steps, nesting and the like, so that the use of connecting pieces is reduced, and the reliability of the channel is improved.

The power generation block fastening bolt 5, the electrode fastening nut 3, the inter-electrode insulating gasket 13, the cover plate, the second insulating gasket 7, the electrode tensioning bolt 8, the head power generation electrode 12, the middle power generation electrode 14, the third insulating gasket 15, the protection piece 16 and the insulating piece 17 form a magnetofluid power generation section; wherein, a round hole is arranged in the middle of the head generating electrode 12 and is used for arranging the head of the electrode fastening nut 3 or the electrode tensioning bolt 8;

a round hole is formed in the middle of the middle power generation electrode 14 and used for placing the electrode tensioning bolt 8;

the middle generating electrode 14 and the head generating electrode 12 are stepped, and a protecting piece 16 and an insulating piece 17 are arranged at the step;

an inter-electrode insulating gasket 13 is arranged between the head generating electrode 12 and the intermediate generating electrode 14, and between the intermediate generating electrode 14 and the intermediate generating electrode 14, and the inter-electrode insulating gasket 13 is used for insulating;

the electrode tensioning bolt 8 penetrates through the head power generation electrode 12, the middle power generation electrode 14 and the inter-electrode insulating gasket 13 and is fastened through the electrode fastening nut 3 to form a power generation block, and the cover plate 6 covers the power generation block to avoid overflow of high-temperature gas in a power generation channel;

insulating part 17 constitutes a rectangle passageway as the insulating surface of electricity generation section with the electrode face, and protective member 16 is placed to insulating part 17 outside, and electricity generation chunk fastening bolt 5 passes apron, protective member 16, fixes electricity generation section as a whole, and the electricity generation section that is fragile becomes a whole alone, connects through second insulating gasket 7 and transition piece 11, and it is convenient to change.

Specifically, the connecting flange 9, the transition piece 11, the upper cover plate 6-1, the lower cover plate 6-2 and the protection piece 16 are all made of red copper. The red copper with excellent heat sink property can quickly transmit and absorb heat, avoids the use of cooling water, improves the efficiency of the magnetofluid power generation channel, has good machinability, is convenient for channel assembly and power generation section replacement, and has high channel reliability.

Specifically, the first insulating gasket 4, the second insulating gasket 7, the third insulating gasket 15, the inter-electrode insulating gasket 13, the electrode tightening bolt 8, the insulating member 17, and the power generation block tightening bolt 5 are all made of materials such as boron nitride ceramics with good insulating property, temperature resistance, and impact resistance.

The red copper with excellent heat sink property can quickly transmit and absorb heat, avoids the use of cooling water, improves the efficiency of the magnetofluid power generation channel, has good machinability, is convenient for channel assembly and power generation section replacement, and has high channel reliability. The channel sealing mostly adopts mechanical sealing modes such as steps, nesting and the like, so that the use of connecting pieces is reduced, and the reliability of the channel is improved. The vulnerable power generation section is independently integrated and is connected with the transition piece 11 through the insulating gasket 7, so that the replacement is convenient.

The invention provides a heat sink type power generation channel design method and device for magnetofluid power generation aiming at the actual working conditions of the magnetofluid power generation channel, the method and device are convenient to assemble and low in cost, can stably run under the high-temperature condition, avoids the use of cooling water, improves the efficiency of the magnetofluid power generation channel, has good machinability of red copper, is convenient to assemble the channel, is convenient to replace a power generation section, is high in channel reliability, long in service life, safe, environment-friendly, low in cost, time-saving and labor-saving, and improves the industrial production efficiency.

While the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Many other changes and modifications can be made without departing from the spirit and scope of the invention. It is to be understood that the invention is not to be limited to the specific embodiments, but only by the scope of the appended claims.