阅读说明：本技术 微尺度燃烧发电装置及其使用方法 (Micro-scale combustion power generation device and use method thereof ) 是由 温华兵 吴逸锋 杨文明 于 2019-11-08 设计创作，主要内容包括：本发明公开了一种微尺度燃烧发电装置,包括：气体混合腔、燃烧发电腔、尾能吸收腔,甲烷、氧气首先在气体混合腔混合或甲烷、氧气、氢气首先在气体混合腔混合,生成的混合气体进入燃烧发电腔中燃烧发电,燃烧发电腔排出的尾气经过尾能吸收腔将热能吸收。本发明在整体装置上增加尾能吸收腔,通过其中的热能发电机将热燃烧发电腔产生的含有大量热能的尾气进行热电转换,提高了能源的吸收率。(The invention discloses a micro-scale combustion power generation device, which comprises: the methane and the oxygen are firstly mixed in the gas mixing cavity or the methane, the oxygen and the hydrogen are firstly mixed in the gas mixing cavity, the generated mixed gas enters the combustion power generation cavity to be combusted and generated, and the tail gas exhausted from the combustion power generation cavity absorbs the heat energy through the tail energy absorption cavity. The tail energy absorption cavity is added on the whole device, and the tail gas containing a large amount of heat energy generated by the heat combustion power generation cavity is subjected to thermoelectric conversion through the heat energy generator, so that the absorption rate of energy is improved.)

1. A microscale combustion power generation device, comprising: the methane and the oxygen are firstly mixed in the gas mixing cavity or the methane, the oxygen and the hydrogen are firstly mixed in the gas mixing cavity, the generated mixed gas enters the combustion power generation cavity to be combusted and generated, and the tail gas exhausted from the combustion power generation cavity absorbs the heat energy through the tail energy absorption cavity.

2. The micro-scaled combustion power plant of claim 1, wherein the gas mixing chamber comprises: the device comprises a control box, an oxygen inlet, a methane inlet, a hydrogen inlet, a first air inlet valve, a second air inlet valve and a third air inlet valve; an oxygen inlet is formed in the upper end of the gas mixing cavity, a methane inlet and a hydrogen inlet are formed in the lower end of the gas mixing cavity, a first air inlet valve is arranged in the oxygen inlet, a second air inlet valve is arranged in the methane inlet, and a third air inlet valve is arranged in the hydrogen inlet; the upper part in the gas mixing cavity is provided with a first mixing cavity, and the lower part is provided with a second mixing cavity; the controller is connected with the first air inlet valve, the second air inlet valve and the third air inlet valve through circuits; the methane and the hydrogen are mixed by the second mixing cavity, and the oxygen is mixed by the first mixing cavity and then enters the combustion power generation cavity;

the combustion power generation cavity comprises an igniter, an ignition guide pipe, a combustor, a filter and a photovoltaic cell panel; an igniter is arranged at the top part in the combustion power generation cavity; a plurality of burners are arranged below the igniter, one end of the ignition guide pipe is connected with the igniter, and the other end of the ignition guide pipe extends into the burners; the filter and the photovoltaic cell panel are sequentially arranged on the left side and the right side of the combustor from inside to outside;

the tail energy absorption cavity comprises a storage battery, a thermal generator and a power supply output end; the air outlet of the combustion power generation cavity is connected with the air inlet of the thermal power generator; the storage battery is respectively connected with the thermal generator, the photovoltaic cell panel and the power supply output end circuit.

3. The micro-scaled combustion power plant of claim 2, wherein the gas mixing chamber further comprises: a concentration temperature sensor; and the outlet of the second mixing cavity is close to be provided with the concentration temperature sensor, and the concentration temperature sensor is connected with the control box through a circuit.

4. The micro-scaled combustion power plant of claim 2 or 3, wherein the gas mixing chamber further comprises: a fourth air inlet valve, a fifth air inlet valve and a catalytic cavity; the fourth air inlet valve is arranged on the wall of the gas mixing cavity between the methane inlet and the second mixing cavity; the fifth air inlet valve is arranged on the wall of the second mixing cavity; the fourth air inlet valve and the fifth air inlet valve are in circuit connection with the control box; one side of the catalysis cavity is provided with a cabin door, catalyst is loaded into the catalysis cavity through the cabin door, and the other side of the catalysis cavity is provided with a catalysis cavity air inlet and a catalysis cavity air outlet; the assembly of catalysis chamber detachable is in gas mixing chamber one side, the catalysis chamber is equipped when on the gas mixing chamber, the catalysis chamber air inlet with the airtight intercommunication of fourth admission valve, the catalysis chamber gas outlet with the airtight intercommunication of fifth admission valve, methane gas gets into through fourth admission valve, catalysis chamber air inlet the catalysis chamber produces hydrogen, and the mist of methane, hydrogen that generates gets into the second mixing chamber through catalysis chamber gas outlet, fifth admission valve.

5. A method of using a micro-scale combustion power plant, comprising: a using method when methane, hydrogen and oxygen are simultaneously introduced and a using method when methane and oxygen are simultaneously introduced;

the using method when the methane, the hydrogen and the oxygen are simultaneously introduced comprises the following steps:

step A1: opening a first air inlet valve, a second air inlet valve and a third air inlet valve, connecting a load with the power supply output end, introducing methane gas through a methane gas inlet, introducing hydrogen through a hydrogen gas inlet, and introducing oxygen through an oxygen gas inlet;

step A2: when the methane concentration is lower than 80%, regulating a third gas inlet valve through a control box to keep the methane concentration between 80% and 90%;

when the methane concentration is higher than 90%, adjusting a second air inlet valve through a control box to keep the methane concentration between 80% and 90%;

step A3: after ignition, when the temperature in the combustion power generation cavity reaches a preset temperature, the third air inlet valve is closed through the control box;

the use method when simultaneously introducing methane and oxygen comprises the following steps:

step B1: opening the first air inlet valve and the second air inlet valve, connecting the load with the power supply output end, introducing methane gas through a methane gas inlet, and introducing oxygen through an oxygen gas inlet;

step B2: after ignition, when the temperature in the combustion power generation cavity is continuously lower than a preset temperature, a catalytic cavity is assembled on the gas mixing cavity, and a fourth air inlet valve and a fifth air inlet valve are opened through a control box;

step B3: and when the temperature in the combustion power generation cavity reaches the preset temperature, the fourth air inlet valve and the fifth air inlet valve are closed through the control box.

6. The method for using a micro-scaled combustion power generation device according to claim 5, wherein in step A2, when the third air intake valve cannot be adjusted by the control box to keep the methane concentration between 80% and 90%, a catalytic cavity is assembled on the gas mixing cavity, and the fourth air intake valve and the fifth air intake valve are opened by the control box.

7. The method for using a micro-scaled combustion power plant according to claim 5, wherein the step A3 further comprises: when the temperature in the combustion power generation cavity is continuously lower than the preset temperature, a catalytic cavity is assembled on the gas mixing cavity, and a fourth air inlet valve and a fifth air inlet valve are opened through a control box; and when the temperature in the combustion power generation cavity reaches the preset temperature, the fourth air inlet valve and the fifth air inlet valve are opened through the control box.

Technical Field

The invention relates to the technical field of micro-scale power generation, in particular to a micro-scale combustion power generation device and a using method thereof.

Background

Burning fuel to produce energy is the most widely used energy utilization in productive life. 90% of the world's energy is directly or indirectly utilized through combustion. However, in some occasions, due to the limitation of processing technology, fuel combustion cannot be used for portable electronic equipment such as mobile phones, notebook computers and the like, and at present, people mainly rely on batteries to provide energy for the portable electronic equipment. Chemical batteries have a large use of space in these situations due to their small size, portability, etc., but their disadvantages are also apparent, as they have low energy density and short continuous operation time, requiring frequent battery replacement or recharging. Attempts have been made to use combustion in the microcombustor to obtain energy. The micro-burner has, in comparison with the battery: low price, long storage life, capability of providing stable voltage, convenient refueling, environmental friendliness compared with a disposable battery and the like. Thus, the microcombustor is a very potential energy storage device.

The patent number is CN104682769A, and the name is a microscale thermophotovoltaic power generation device and a method for preparing hydrogen by methane conversion. The device converts methane into hydrogen, and utilizes the micro-combustor as a heat source to be applied to thermal photovoltaic power generation to realize heat-electricity conversion. The patent is expert at, there is certain defect in the methane transformation hydrogen, the proportion of methane hydrogen and oxygen can not be adjusted at any time to this system, research surface, methane hydrogen mixes in proper proportion (hydrogen can burn and combustion efficiency is high when hydrogen and methane concentration ratio are 1/9-2/8, and the tail gas that produces can not contain too much vapor, miniature heat engine power generation system can normal operating, if hydrogen is too little then can not normal work, if hydrogen is too much, then can produce the vapor of excessive weight and influence miniature heat engine system performance) can promote the burning and improve efficiency, therefore the generating efficiency of this system can be adjusted indirectly to the condition fuel proportion, power generation facility has further been optimized. In addition, in the patent, after the mixed fuel of methane and hydrogen is combusted, a large amount of high-temperature and high-pressure combustion tail gas is generated, and a large amount of energy tail gas is directly wasted.

Disclosure of Invention

The invention provides a microscale combustion power generation device and a use method thereof, and aims to solve the technical problems that in the prior art, tail gas energy is wasted, a catalyst cannot be replaced, and a catalysis process is uncontrollable.

The invention provides a micro-scale combustion power generation device, which comprises: the methane and the oxygen are firstly mixed in the gas mixing cavity or the methane, the oxygen and the hydrogen are firstly mixed in the gas mixing cavity, the generated mixed gas enters the combustion power generation cavity to be combusted and generated, and the tail gas exhausted from the combustion power generation cavity absorbs the heat energy through the tail energy absorption cavity.

Further, the gas mixing chamber comprises: the device comprises a control box, an oxygen inlet, a methane inlet, a hydrogen inlet, a first air inlet valve, a second air inlet valve and a third air inlet valve; an oxygen inlet is formed in the upper end of the gas mixing cavity, a methane inlet and a hydrogen inlet are formed in the lower end of the gas mixing cavity, a first air inlet valve is arranged in the oxygen inlet, a second air inlet valve is arranged in the methane inlet, and a third air inlet valve is arranged in the hydrogen inlet; the upper part in the gas mixing cavity is provided with a first mixing cavity, and the lower part is provided with a second mixing cavity; the controller is connected with the first air inlet valve, the second air inlet valve and the third air inlet valve through circuits; the methane and the hydrogen are mixed by the second mixing cavity, and the oxygen is mixed by the first mixing cavity and then enters the combustion power generation cavity;

the combustion power generation cavity comprises an igniter, an ignition guide pipe, a combustor, a filter and a photovoltaic cell panel; an igniter is arranged at the top part in the combustion power generation cavity; a plurality of burners are arranged below the igniter, one end of the ignition guide pipe is connected with the igniter, and the other end of the ignition guide pipe extends into the burners; the filter and the photovoltaic cell panel are sequentially arranged on the left side and the right side of the combustor from inside to outside;

the tail energy absorption cavity comprises a storage battery, a thermal generator and a power supply output end; the air outlet of the combustion power generation cavity is connected with the air inlet of the thermal power generator; the storage battery is respectively connected with the thermal generator, the photovoltaic cell panel and the power supply output end circuit.

Further, the gas mixing chamber further comprises: a concentration temperature sensor; and the outlet of the second mixing cavity is close to be provided with the concentration temperature sensor, and the concentration temperature sensor is connected with the control box through a circuit.

Further, the gas mixing chamber further comprises: a fourth air inlet valve, a fifth air inlet valve and a catalytic cavity; the fourth air inlet valve is arranged on the wall of the gas mixing cavity between the methane inlet and the second mixing cavity; the fifth air inlet valve is arranged on the wall of the second mixing cavity; the fourth air inlet valve and the fifth air inlet valve are in circuit connection with the control box; one side of the catalysis cavity is provided with a cabin door, catalyst is loaded into the catalysis cavity through the cabin door, and the other side of the catalysis cavity is provided with a catalysis cavity air inlet and a catalysis cavity air outlet; the assembly of catalysis chamber detachable is in gas mixing chamber one side, the catalysis chamber is equipped when on the gas mixing chamber, the catalysis chamber air inlet with the airtight intercommunication of fourth admission valve, the catalysis chamber gas outlet with the airtight intercommunication of fifth admission valve, methane gas gets into through fourth admission valve, catalysis chamber air inlet the catalysis chamber produces hydrogen, and the mist of methane, hydrogen that generates gets into the second mixing chamber through catalysis chamber gas outlet, fifth admission valve.

The invention also provides a use method of the micro-scale combustion power generation device, which comprises the following steps: a using method when methane, hydrogen and oxygen are simultaneously introduced and a using method when methane and oxygen are simultaneously introduced;

the using method when the methane, the hydrogen and the oxygen are simultaneously introduced comprises the following steps:

step A1: opening a first air inlet valve, a second air inlet valve and a third air inlet valve, connecting a load with the power supply output end, introducing methane gas through a methane gas inlet, introducing hydrogen through a hydrogen gas inlet, and introducing oxygen through an oxygen gas inlet;

step A2: when the methane concentration is lower than 80%, regulating a third gas inlet valve through a control box to keep the methane concentration between 80% and 90%;

when the methane concentration is higher than 90%, adjusting a second air inlet valve through a control box to keep the methane concentration between 80% and 90%;

step A3: after ignition, when the temperature in the combustion power generation cavity reaches a preset temperature, the third air inlet valve is closed through the control box;

the use method when simultaneously introducing methane and oxygen comprises the following steps:

step B1: opening the first air inlet valve and the second air inlet valve, connecting the load with the power supply output end, introducing methane gas through a methane gas inlet, and introducing oxygen through an oxygen gas inlet;

step B2: after ignition, when the temperature in the combustion power generation cavity is continuously lower than a preset temperature, a catalytic cavity is assembled on the gas mixing cavity, and a fourth air inlet valve and a fifth air inlet valve are opened through a control box;

step B3: and when the temperature in the combustion power generation cavity reaches the preset temperature, the fourth air inlet valve and the fifth air inlet valve are closed through the control box.

Further, in step a2, when the third intake valve cannot be adjusted by the control box to keep the methane concentration between 80% and 90%, a catalytic cavity is assembled on the gas mixing cavity, and the fourth intake valve and the fifth intake valve are opened by the control box.

Further, the step a3 further includes: when the temperature in the combustion power generation cavity is continuously lower than the preset temperature, a catalytic cavity is assembled on the gas mixing cavity, and a fourth air inlet valve and a fifth air inlet valve are opened through a control box; and when the temperature in the combustion power generation cavity reaches the preset temperature, the fourth air inlet valve and the fifth air inlet valve are opened through the control box.

The invention has the beneficial effects that:

the tail energy absorption cavity is added on the whole device, and the tail gas containing a large amount of heat energy generated by the heat combustion power generation cavity is subjected to thermoelectric conversion through the heat energy generator, so that the absorption rate of energy is improved.

The invention can selectively introduce hydrogen, and adjust the mixing ratio of methane and hydrogen when introducing hydrogen, thereby adapting to burners with different sizes and improving the working condition adaptability of the invention.

According to the invention, the catalytic cavity is detachably assembled with the gas mixing cavity, when the methane concentration is too high and ignition cannot be carried out or complete ignition is carried out, part of methane is catalyzed to generate hydrogen, ignition is assisted, and the applicability of the device is improved.

Drawings

The features and advantages of the present invention will be more clearly understood by reference to the accompanying drawings, which are illustrative and not to be construed as limiting the invention in any way, and in which:

FIG. 1 is a block diagram of a microscale combustion power plant of the present invention;

FIG. 2 is a cross-sectional view taken at A-A of FIG. 1 in accordance with the present invention;

FIG. 3 is a block diagram of a catalytic chamber of the present invention;

FIG. 4 is a view of the inlet and outlet of the catalytic chamber of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The embodiment of the invention provides a micro-scale combustion power generation device, which comprises: the methane and the oxygen are firstly mixed in the gas mixing cavity or the methane, the oxygen and the hydrogen are firstly mixed in the gas mixing cavity, the generated mixed gas enters the combustion power generation cavity to be combusted and generated, and the tail gas exhausted from the combustion power generation cavity absorbs the heat energy through the tail energy absorption cavity.

The gas mixing chamber includes: the device comprises a control box 1-1, an oxygen inlet 1-2, a methane inlet 1-3, a hydrogen inlet 1-4, a first air inlet valve 1-5, a second air inlet valve 1-6, a third air inlet valve 1-7, a concentration temperature sensor 1-8, a fourth air inlet valve 1-9, a fifth air inlet valve 1-10 and a catalysis cavity 1-11; the upper end of the gas mixing cavity is provided with an oxygen inlet 1-2, the lower end of the gas mixing cavity is provided with a methane inlet 1-3 and a hydrogen inlet 1-4, a first air inlet valve 1-5 is arranged in the oxygen inlet 1-2, a second air inlet valve 1-6 is arranged in the methane inlet 1-3, and a third air inlet valve 1-7 is arranged in the hydrogen inlet 1-4; the upper part in the gas mixing cavity is provided with a first mixing cavity 1-12, and the lower part is provided with a second mixing cavity 1-13; a concentration temperature sensor 1-8 is arranged near the outlet of the second mixing cavity; the fourth air inlet valve 1-9 is arranged on the wall of the gas mixing cavity between the methane inlet 1-3 and the second mixing cavity; the fifth air inlet valve 1-10 is arranged on the wall of the second mixing cavity; one side of the catalysis cavity 1-11 is provided with a cabin door 1-11-1, a catalyst 1-11-2 is loaded into the catalysis cavity 1-11 through the cabin door, and the other side of the catalysis cavity 1-11 is provided with a catalysis cavity air inlet 1-11-3 and a catalysis cavity air outlet 1-11-4; the catalytic cavity 1-11 is detachably assembled at one side of the gas mixing cavity, when the catalytic cavity 1-11 is assembled on the gas mixing cavity, the gas inlet 1-11-3 of the catalytic cavity is hermetically communicated with the fourth gas inlet valve 1-9, the gas outlet 1-11-4 of the catalytic cavity is hermetically communicated with the fifth gas inlet valve 1-10, methane gas enters the catalytic cavity 1-11 through the fourth gas inlet valve 1-9 and the gas inlet 1-11-3 of the catalytic cavity to generate hydrogen, and the generated mixed gas of methane and hydrogen enters the second mixing cavity through the gas outlet 1-11-4 of the catalytic cavity and the fifth gas inlet valve 1-10; the controller is in circuit connection with the first air inlet valve 1-5, the second air inlet valve 1-6, the third air inlet valve 1-7, the concentration temperature sensor 1-8, the fourth air inlet valve 1-9 and the fifth air inlet valve 1-10; the methane and the hydrogen are mixed by the second mixing cavity, and the oxygen is mixed by the first mixing cavity and then enters the combustion power generation cavity;

the combustion power generation cavity comprises an igniter 2-1, an ignition guide pipe 2-2, a combustor 2-3, a filter 2-4 and a photovoltaic cell panel 2-5; an igniter 2-1 is arranged at the top in the combustion power generation cavity; a plurality of burners 2-3 are arranged below the igniter 2-1, one end of the ignition conduit 2-2 is connected with the igniter 2-1, and the other end extends into the burners 2-3; the filter 2-4 and the photovoltaic cell panel 2-5 are sequentially arranged on the left side and the right side of the combustor 2-3 from inside to outside;

the tail energy absorption cavity comprises a tail gas collection chamber 3-1, a storage battery 3-2, a thermal generator 3-3, a power supply output end 3-4 and an exhaust port 3-5; the air outlet of the combustion power generation cavity is connected with the air inlet of the thermal power generator 3-3; the storage battery 3-2 is respectively connected with the thermal generator 3-3, the photovoltaic cell panel 2-5 and the power supply output end 3-4 through circuits.

The using method of the invention comprises the following steps: a using method when methane, hydrogen and oxygen are simultaneously introduced and a using method when methane and oxygen are simultaneously introduced; two using methods correspond to two different working conditions;

the using method when simultaneously introducing methane, hydrogen and oxygen comprises the following steps:

step A1: opening a first air inlet valve 1-5, a second air inlet valve 1-6 and a third air inlet valve 1-7, connecting a load with a power supply output end 3-4, introducing methane gas through a methane gas inlet 1-3, introducing hydrogen through a hydrogen gas inlet 1-4, and introducing oxygen through an oxygen gas inlet 1-2;

step A2: when the concentration of methane detected by the concentration temperature sensor 1-8 is lower than 80%, regulating a third air inlet valve 1-7 through a control box 1-1 to keep the concentration of methane between 80% and 90%;

when the methane concentration detected by the concentration temperature sensor 1-8 is higher than 90%, regulating a second air inlet valve 1-6 through a control box 1-1 to keep the methane concentration between 80% and 90%;

when the concentration of methane can not be kept between 80% and 90% by adjusting the third air inlet valve 1-7 through the control box 1-1, a catalytic cavity 1-11 is assembled on the gas mixing cavity, and the fourth air inlet valve 1-9 and the fifth air inlet valve 1-10 are opened through the control box 1-1;

step A3: after ignition, when the temperature in the combustion power generation cavity detected by the concentration temperature sensor 1-8 reaches a preset temperature, which indicates that all the combustors 2-3 have successfully operated, the third air inlet valve 1-7 is closed through the control box 1-1, so that the consumption is reduced;

when the temperature in the combustion power generation cavity is continuously lower than the preset temperature, which indicates that a part of the combustors 2-3 can not work or the ignition can not be successful due to too much methane, the gas mixing cavity is provided with a catalytic cavity 1-11, and a fourth air inlet valve 1-9 and a fifth air inlet valve 1-10 are opened through a control box 1-1; when the temperature in the combustion power generation cavity reaches the preset temperature, the fourth air inlet valve 1-9 and the fifth air inlet valve 1-10 are opened through the control box 1-1.

The use method when introducing methane and oxygen simultaneously comprises the following steps:

step B1: opening a first air inlet valve 1-5 and a second air inlet valve 1-6, connecting a load with a power supply output end 3-4, introducing methane gas through a methane gas inlet 1-3, and introducing oxygen through an oxygen gas inlet 1-2;

step B2: after ignition, when the temperature in the combustion power generation cavity is continuously lower than a preset temperature, which indicates that a part of combustors 2-3 can not work or the ignition can not be successful due to too much methane, a catalytic cavity 1-11 is assembled on the gas mixing cavity, and a fourth air inlet valve 1-9 and a fifth air inlet valve 1-10 are opened through a control box 1-1;

step B3: and when the temperature in the combustion power generation cavity reaches the preset temperature, the fourth air inlet valve 1-9 and the fifth air inlet valve 1-10 are closed through the control box 1-1.

Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.