阅读说明：本技术 基于层叠式温差换热器的余热利用发电装置 (Waste heat utilization power generation device based on stacked temperature difference heat exchanger ) 是由 韩怀志 树凌云 高凌宇 郝伟 王伯群 夏聪 于 2018-08-28 设计创作，主要内容包括：本发明提供了一种基于层叠式温差换热器的余热利用发电装置,包括汽油发电机、层叠式温差换热器和水泵,层叠式温差换热器为由多片平行设置的温差半导体发电板片依次固定连接形成长方体状结构,在相邻的两个温差半导体发电板片中,一个作为冷端,另一个作为热端,多片温差半导体发电板片形成冷端和热端交错布置形式,每片温差半导体片的内部均设有温差发电模块,每片温差半导体的外部均设有一个凹腔,作为冷端的温差半导体发电板片上的凹腔为冷却水凹腔,作为热端的温差半导体发电板片上的凹腔为尾气凹腔。本发明层叠式设计,结构紧凑,结构和强度可靠,换热效率高；温差半导体冷端温度提高,热端温度降低,更有助于两端换热。(The invention provides a waste heat utilization power generation device based on a laminated temperature difference heat exchanger, which comprises a gasoline generator, the laminated temperature difference heat exchanger and a water pump, wherein the laminated temperature difference heat exchanger is a cuboid structure formed by sequentially and fixedly connecting a plurality of temperature difference semiconductor power generation plates which are arranged in parallel, one of the two adjacent temperature difference semiconductor power generation plates is used as a cold end, the other one of the two adjacent temperature difference semiconductor power generation plates is used as a hot end, the plurality of temperature difference semiconductor power generation plates form a cold end and hot end staggered arrangement mode, a temperature difference power generation module is arranged inside each temperature difference semiconductor plate, a concave cavity is arranged outside each temperature difference semiconductor, the concave cavity on the temperature difference semiconductor power generation plate used as the cold end is a cooling water concave cavity, and the concave cavity on the temperature difference. The invention has the advantages of laminated design, compact structure, reliable structure and strength and high heat exchange efficiency; the cold end temperature of the temperature difference semiconductor is increased, and the hot end temperature is reduced, so that heat exchange at two ends is facilitated.)

1. The utility model provides a waste heat utilization power generation facility based on range upon range of formula difference in temperature heat exchanger which characterized in that: the laminated thermoelectric generation device comprises a gasoline generator (1), laminated thermoelectric heat exchangers (2) and a water pump (23), wherein the laminated thermoelectric heat exchangers (2) are of a cuboid structure formed by sequentially and fixedly connecting a plurality of thermoelectric semiconductor generation plates which are arranged in parallel, one thermoelectric semiconductor generation plate is used as a cold end (3) and the other thermoelectric semiconductor generation plate is used as a hot end (4), the plurality of thermoelectric semiconductor generation plates form a cold end (3) and hot end (4) staggered arrangement mode, a thermoelectric generation module is arranged inside each thermoelectric semiconductor, a concave cavity is arranged outside each thermoelectric semiconductor, a cooling water concave cavity (5) is arranged on each thermoelectric semiconductor generation plate which is used as the cold end (3), a tail gas concave cavity (6) is arranged on each thermoelectric semiconductor generation plate which is used as the hot end (4), and openings are arranged at four corners of each thermoelectric semiconductor, the openings at the two ends of one diagonal line are an air inlet (7) and an air outlet (8), and the openings at the two ends of the other diagonal line are a water inlet (9) and a water outlet (10);

the tail gas cavity (6) is communicated with the gas inlet (7) and the gas outlet (8) on the same thermoelectric semiconductor power generation plate, the tail gas cavity (6) is isolated from the water inlet (9) and the water outlet (10), the cooling water cavity (5) is communicated with the water inlet (9) and the water outlet (10) on the same thermoelectric semiconductor power generation plate, and the cooling water cavity (5) is isolated from the gas inlet (7) and the gas outlet (8);

the hot tail gas of the gasoline generator (1) is communicated with a gas inlet on a first temperature difference semiconductor power generation plate of the laminated temperature difference heat exchanger (2) through a gas inlet pipe (11), the gas after heat exchange of the laminated temperature difference heat exchanger (2) finally enters a gas outlet pipe (12) through a gas outlet on the first temperature difference semiconductor power generation plate, cooling water of a water pump (23) is communicated with a water inlet on the first temperature difference semiconductor power generation plate of the laminated temperature difference heat exchanger (2) through a water inlet pipe (13), liquid after heat exchange of the laminated temperature difference heat exchanger (2) finally enters a water outlet pipe (14) through a water outlet on the first temperature difference semiconductor power generation plate, and the laminated heat exchanger (2) is electrically connected with electric equipment in a mode that a plurality of temperature difference semiconductor power generation plates which are arranged in parallel are connected.

2. The stacked thermoelectric heat exchanger-based waste heat utilization power generation device according to claim 1, wherein: a plurality of herringbone corrugated plates (15) are arranged in each cooling water concave cavity (5), a plurality of rivet type convex blocks (16) are arranged in each tail gas concave cavity (6), and the rivet type convex blocks (16) are arranged in a fork row mode.

3. The stacked thermoelectric heat exchanger-based waste heat utilization power generation device according to claim 2, wherein: the tail gas cavity (6) on the temperature difference semiconductor power generation plate serving as the hot end (4) is isolated from the water inlet (9) and the water outlet (10) and the cooling water cavity (5) on the temperature difference semiconductor power generation plate serving as the cold end (3) is isolated from the air inlet (7) and the air outlet (8) through a double-channel sealing structure.

4. The stacked thermoelectric heat exchanger-based waste heat utilization power generation device according to claim 3, wherein: two pass seal structure is including separating along (17), seepage cavity (18) and signal hole (19), tail gas cavity (6) and water inlet (9) and delivery port (10) between cooling water cavity (5) and air inlet (7) and gas outlet (8) between all separate along (17), the separation enclose into seepage cavity (18) along two right-angle sides of the angle department of the temperature difference semiconductor electricity generation board piece of (17) and corresponding department and the opening of this angle department, signal hole (19) set up on two right-angle sides of the angle department of temperature difference semiconductor electricity generation board piece.

5. The stacked thermoelectric heat exchanger-based waste heat utilization power generation device according to any one of claims 1 to 4, wherein: the power generation device further comprises a buffer tube (20), two ends of the buffer tube (20) are respectively communicated with the air inlet tube (11) and the air outlet tube (12), and the buffer tube (20) is provided with a regulating valve (21).

6. The stacked thermoelectric heat exchanger-based waste heat utilization power generation device according to claim 5, wherein: the laminated temperature difference heat exchanger (2) is fixed through a fixing plate (22).

7. The stacked thermoelectric heat exchanger-based waste heat utilization power generation device according to claim 6, wherein: the laminated temperature difference heat exchangers (2) are arranged in a plurality of numbers, and the laminated temperature difference heat exchangers (2) are connected in series and then electrically connected with electric equipment.

Technical Field

The invention belongs to the technical field of waste heat utilization power generation, and particularly relates to a waste heat utilization power generation device based on a stacked temperature difference heat exchanger.

Background

The thermoelectric semiconductor waste heat utilization at the present stage is only to attach the thermoelectric semiconductor beside a heat source, the thermoelectric heat exchange is not directly carried out, and the energy utilization rate is not high. In addition, the existing temperature difference heat exchanger is generally cylindrical, and a laminated plate structure is rarely adopted.

The thermoelectric semiconductor power generation is a novel power generation mode for converting heat energy into electric energy by utilizing a Seebeck effect, the Seebeck effect means that when two different metals form a closed loop, if temperature difference exists between two joints, current is generated in the loop, and the thermoelectric semiconductor power generation has the advantages of no pollution, no noise, compact structure, no maintenance, stable performance and the like. The early thermoelectric power generation technology is only used in the special fields of aerospace, military field, ocean operation and the like due to higher cost, and along with the development of thermoelectric semiconductor materials, the technology is applied to the application fields of low-grade energy sources such as geothermal energy, solar energy, industrial waste heat and the like, and the application range is gradually expanded.

The rapid development of global economy accelerates the process of ball industrialization, a large amount of medium-high temperature waste heat exists in industrial production, particularly, energy-consuming households such as metallurgical industry can reasonably utilize the industrial waste heat to change waste into valuable, and a new way for solving the problem of increasingly tense energy and relieving the pressure problem caused by the environment can be found.

The domestic thermoelectric power generation technology is applied to the fields of ships, automobiles, oceans and the like, but the application of the thermoelectric power generation technology in the recovery of the waste heat of the tail gas of the generator is relatively less. In recent years, with the development and progress of science and technology, the thermoelectric semiconductor waste heat utilization of the thermoelectric semiconductor material at the present stage is only to attach the thermoelectric semiconductor beside a heat source, the thermoelectric heat exchange is not directly carried out, and the energy utilization rate is not high.

The existing temperature difference heat exchanger is generally cylindrical, and a laminated plate structure is rarely adopted.

The temperature difference semiconductor heat exchanger can be made into a series of modular structures, and reconfigurable heat exchanger recombination can be carried out according to actual needs; and multiple heat exchange plates can be connected in parallel according to different applicable environments. Therefore, the heat exchanger with the structure has the characteristics of good adaptability, high heat exchange efficiency, compact structure and reconfigurability, and has good market prospect.

Disclosure of Invention

In view of the above, the invention aims to provide a waste heat utilization power generation device based on a stacked temperature difference heat exchanger, which is designed in a stacked manner, and has the advantages of compact structure, reliable structure and strength and high heat exchange efficiency; the cold end temperature of the temperature difference semiconductor is increased, and the hot end temperature is reduced, so that heat exchange at two ends is facilitated.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

a waste heat utilization power generation device based on a laminated temperature difference heat exchanger comprises a gasoline generator, the laminated temperature difference heat exchanger and a water pump, wherein the laminated temperature difference heat exchanger is of a cuboid structure formed by sequentially and fixedly connecting a plurality of temperature difference semiconductor power generation plates which are arranged in parallel, one of the two adjacent temperature difference semiconductor power generation plates is used as a cold end, the other one of the two adjacent temperature difference semiconductor power generation plates is used as a hot end, the plurality of temperature difference semiconductor power generation plates form a cold end and hot end staggered arrangement mode, a temperature difference power generation module is arranged inside each temperature difference semiconductor plate, a concave cavity is arranged outside each temperature difference semiconductor, the concave cavity on the temperature difference semiconductor power generation plate used as the cold end is a cooling water concave cavity, the concave cavity on the temperature difference semiconductor power generation plate used as the hot end is a tail gas concave cavity, and openings are arranged at four, the openings at two ends of one diagonal line are an air inlet and an air outlet, and the openings at two ends of the other diagonal line are a water inlet and a water outlet;

the tail gas concave cavity is communicated with the gas inlet and the gas outlet on the same thermoelectric semiconductor power generation plate, the tail gas concave cavity is isolated from the water inlet and the water outlet, the cooling water concave cavity is communicated with the water inlet and the water outlet on the same thermoelectric semiconductor power generation plate, and the cooling water concave cavity is isolated from the gas inlet and the gas outlet;

the hot tail gas of the gasoline generator is communicated with a gas inlet on a first temperature difference semiconductor power generation plate of the laminated temperature difference heat exchanger through a gas inlet pipe, gas subjected to heat exchange by the laminated temperature difference heat exchanger finally enters a gas outlet pipe through a gas outlet on the first temperature difference semiconductor power generation plate, cooling water of the water pump 3 is communicated with a water inlet on the first temperature difference semiconductor power generation plate of the laminated temperature difference heat exchanger through a water inlet pipe, liquid subjected to heat exchange by the laminated temperature difference heat exchanger finally enters a water outlet pipe through a water outlet on the first temperature difference semiconductor power generation plate, and the laminated temperature difference heat exchanger is electrically connected with electric equipment in a mode that a plurality of temperature difference semiconductor power generation plates arranged in parallel are connected in parallel.

Furthermore, all be equipped with a plurality of chevron shape buckled plate in each cooling water cavity, all be equipped with a plurality of rivet formula lug in each tail gas cavity, a plurality of rivet formula lug is arranged with the fork row form.

Furthermore, the tail gas concave cavity on the temperature difference semiconductor power generation plate serving as the hot end is isolated from the water inlet and the water outlet and the cooling water concave cavity on the temperature difference semiconductor power generation plate serving as the cold end is isolated from the air inlet and the air outlet through a double-channel sealing structure.

Further, two pass seal structure is including separating edge, seepage cavity and signal hole, tail gas cavity and water inlet and delivery port between, cooling water cavity and air inlet and gas outlet between all separate along separating, the separation along two right-angle sides of the angle department of the thermoelectric semiconductor electricity generation slab with corresponding department and the opening of this angle department enclose into the seepage cavity, the signal hole set up on two right-angle sides of the angle department of thermoelectric semiconductor electricity generation slab.

Furthermore, the power generation device also comprises a buffer tube, two ends of the buffer tube are respectively communicated with the air inlet pipe and the air outlet pipe, and the buffer tube is provided with a regulating valve.

Further, the stacked type temperature difference heat exchanger is fixed through a fixing plate.

Furthermore, the laminated temperature difference heat exchangers are arranged in a plurality of numbers, and the plurality of laminated temperature difference heat exchangers are connected in series and then electrically connected with the electric equipment.

Compared with the prior art, the waste heat utilization power generation device based on the stacked temperature difference heat exchanger has the following advantages:

according to the waste heat utilization power generation device based on the stacked temperature difference heat exchanger, the heat exchanger structure is stacked, and is formed by stacking a plurality of single-layer temperature difference power generation devices, so that the structure is compact, the device comprises a plurality of layers of waste heat channels and cooling water channels, the total working area is large, and the tail gas heat energy utilization efficiency is high; the stacked structure can add/delete channels, realize flexible configuration and meet various power requirements; the tail gas and the circulating water adopt a countercurrent mode, the heat transfer coefficient is high, the logarithmic mean temperature difference is large, the flue gas can be discharged at low temperature, and the utilization of energy is increased; the heat exchange plate has reconfigurability, can be combined with semiconductor plates with different temperature differences according to different actual use working conditions, is suitable for different environments to be reconfigured, and is convenient to carry.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural diagram of a waste heat utilization power generation device based on a stacked thermoelectric heat exchanger according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a stacked thermoelectric heat exchanger in the waste heat utilization power generation device based on the stacked thermoelectric heat exchanger according to the embodiment of the present invention;

FIG. 3 is a schematic illustration of a cold end configuration;

FIG. 4 is a schematic diagram of a hot end structure;

FIG. 5 is a schematic view of a thermoelectric generation module connection topology;

fig. 6 is an operational schematic diagram of the stacked type thermoelectric heat exchanger.

Description of reference numerals:

1-gasoline engine generator, 2-laminated temperature difference heat exchanger, 3-cold end, 4-hot end, 5-cooling water cavity, 6-tail gas cavity, 7-air inlet, 8-air outlet, 9-water inlet, 10-water outlet, 11-air inlet pipe, 12-air outlet pipe, 13-water inlet pipe, 14-water outlet pipe, 15-herringbone corrugated plate, 16-rivet type lug, 17-separation edge, 18-leakage cavity, 19-signal hole, 20-buffer pipe, 21-regulating valve, 22-fixing plate and 23-water pump.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1-4, the waste heat utilization power generation device based on the laminated thermoelectric heat exchanger comprises a gasoline generator 1, a laminated thermoelectric heat exchanger 2 and a water pump 23, wherein the laminated thermoelectric heat exchanger 2 is a cuboid structure formed by sequentially and fixedly connecting a plurality of thermoelectric semiconductor power generation plates arranged in parallel, one of the adjacent thermoelectric semiconductor power generation plates is used as a cold end 3, the other is used as a hot end 4, the plurality of thermoelectric semiconductor power generation plates form a cold end 3 and hot end 4 staggered arrangement mode, a thermoelectric power generation module is arranged inside each thermoelectric semiconductor plate, a concave cavity is arranged outside each thermoelectric semiconductor, a concave cavity on the thermoelectric semiconductor power generation plate used as the cold end 3 is a cooling water concave cavity 5, and a concave cavity on the thermoelectric semiconductor power generation plate used as the hot end 4 is a tail gas concave cavity 6, openings are formed in four corners of each temperature difference semiconductor, wherein the openings at two ends of one diagonal line are an air inlet 7 and an air outlet 8, and the openings at two ends of the other diagonal line are a water inlet 9 and a water outlet 10;

the tail gas cavity 6 is communicated with the gas inlet 7 and the gas outlet 8 on the same thermoelectric semiconductor power generation plate, the tail gas cavity 6 is isolated from the water inlet 9 and the water outlet 10, the cooling water cavity 5 is communicated with the water inlet 9 and the water outlet 10 on the same thermoelectric semiconductor power generation plate, and the cooling water cavity 5 is isolated from the gas inlet 7 and the gas outlet 8;

the hot tail gas of the gasoline generator 1 is communicated with a gas inlet on a first temperature difference semiconductor power generation plate of the laminated temperature difference heat exchanger 2 through a gas inlet pipe 11, gas subjected to heat exchange through the laminated temperature difference heat exchanger 2 finally enters a gas outlet pipe 12 through a gas outlet on the first temperature difference semiconductor power generation plate, cooling water of a water pump 23 is communicated with a water inlet on the first temperature difference semiconductor power generation plate of the laminated temperature difference heat exchanger 2 through a water inlet pipe 13, liquid subjected to heat exchange through the laminated temperature difference heat exchanger 2 finally enters a water outlet pipe 14 through a water outlet on the first temperature difference semiconductor power generation plate, and the laminated temperature difference heat exchanger 2 is electrically connected with electric equipment in a mode that a plurality of temperature difference semiconductor power generation plates arranged in parallel are connected in parallel.

A plurality of herringbone corrugated plates 15 are arranged in each cooling water cavity 5, a plurality of rivet type convex blocks 16 are arranged in each tail gas cavity 6, and the rivet type convex blocks 16 are arranged in a fork row mode.

The tail gas concave cavity 6 on the temperature difference semiconductor power generation plate serving as the hot end 4 is isolated from the water inlet 9 and the water outlet 10, and the cooling water concave cavity 5 on the temperature difference semiconductor power generation plate serving as the cold end 3 is isolated from the air inlet 7 and the air outlet 8 through a double-channel sealing structure.

Two pass seal structure is including separating along 17, seepage cavity 18 and signal hole 19, tail gas cavity 6 and water inlet 9 and delivery port 10 between all separate along 17 through separating between cooling water cavity 5 and air inlet 7 and the gas outlet 8, the separation enclose into seepage cavity 18 along two right-angle sides of the angle department of 17 and the corresponding thermoelectric semiconductor electricity generation slab and the opening of this angle department, signal hole 19 set up on two right-angle sides of the angle department of thermoelectric semiconductor electricity generation slab.

The power generation device also comprises a buffer tube 20, two ends of the buffer tube 20 are respectively communicated with the air inlet tube 11 and the air outlet tube 12, the buffer tube 20 is provided with a regulating valve 21, and the arrangement is mainly that hot tail gas is discharged into the air outlet tube 12 through the buffer tube 20 when the heat exchanger does not work.

The stacked type thermoelectric heat exchanger 2 is fixed by a fixing plate 22.

The laminated thermoelectric heat exchangers 2 are arranged in plurality, and the laminated thermoelectric heat exchangers 2 are connected in series and then electrically connected with electric equipment, and the connection topology structure diagram is shown in fig. 5.

As shown in fig. 6, the operating principle of the waste heat utilization power generation device based on the stacked temperature difference heat exchanger is as follows: taking four thermoelectric semiconductor power generation plates as an example, a first thermoelectric semiconductor power generation plate and a third thermoelectric semiconductor power generation plate are cold ends, and a second thermoelectric semiconductor power generation plate and a fourth thermoelectric semiconductor power generation plate are hot ends;

the hot tail gas from the gasoline generator 1 is communicated with an air inlet 7 on a first temperature difference semiconductor power generation plate (as a cold end) of the laminated temperature difference heat exchanger 2 through an air inlet pipe 11, after the hot tail gas enters the air inlet 7 on a second temperature difference semiconductor power generation plate (as a hot end) through the air inlet 7 on the first temperature difference semiconductor power generation plate (as the cold end), part of the hot tail gas is continuously diffused forwards, part of the hot gas enters a tail gas cavity 6 through the air inlet 7, under the action of a plurality of rivet-type convex blocks 16 in the tail gas cavity 6, after the heat exchange between the hot tail gas and the cold end is accelerated, the hot tail gas sequentially passes through an air outlet 8 on the second temperature difference semiconductor power generation plate (as the hot end) and an air outlet 8 on the first temperature difference semiconductor power generation plate (as the cold end) and is discharged through an air outlet pipe 12, and the diffused part of the hot tail gas enters an air inlet 7 on a third Hot end) enters the tail gas cavity 6, accelerates the heat exchange between the flow and the cold end under the action of a plurality of rivet-type convex blocks 16 in the tail gas cavity 6, sequentially passes through a fourth thermoelectric semiconductor power generation plate (serving as the hot end), a third thermoelectric semiconductor power generation plate, a second thermoelectric semiconductor power generation plate and a gas outlet 8 on the first thermoelectric semiconductor power generation plate (serving as the cold end), and is finally discharged through a gas outlet pipe 12;

the circulation of the cooling water is substantially the same as the circulation of the hot tail gas, specifically: cooling water from a water pump 23 is communicated with a water inlet 9 on a first temperature difference semiconductor power generation plate (as a cold end) of the laminated temperature difference heat exchanger 2 through a water inlet pipe 13, part of the cooling water continuously flows forwards after passing through the water inlet 9 on the first temperature difference semiconductor power generation plate (as the cold end), part of the cooling water enters a cooling water cavity 5 through a water inlet 7, after the heat exchange between the cooling water and the hot end is accelerated under the action of a plurality of herringbone corrugated plates 15 in the cooling water cavity 5, the cooling water is discharged through a water outlet pipe 14 through a water outlet 10 on the first temperature difference semiconductor power generation plate (as the cold end), the diffused part of the cooling water enters a water inlet 9 on a third temperature difference semiconductor power generation plate (as the hot end) through a water inlet 9 on a second temperature difference semiconductor power generation plate (as the hot end) and then enters the cooling water cavity 5, under the effect of a plurality of herringbone corrugated plates 15 in the cooling water concave cavity 5, after the heat exchange between the flow and the hot end is accelerated, the cooling water passes through the water outlet 10 on the third thermoelectric semiconductor power generation plate (as the cold end), the second thermoelectric semiconductor power generation plate and the first thermoelectric semiconductor power generation plate (as the cold end) in sequence, and is finally discharged through the water outlet pipe 14.

The temperature difference semiconductor is manufactured into the plate sheet of the plate heat exchanger, the structure and the strength are reliable, the concave cavity is arranged in the middle, the plurality of herringbone corrugated plates 15 and the plurality of rivet type convex blocks 16 are arranged in the concave cavity, the turbulence degree can be increased, and the heat exchange coefficient is improved. Aiming at the waste heat utilization of the tail gas of the engine, one end of the tail gas is cooled by circulating water, the other end of the tail gas exchanges heat with the circulating water through the flue gas, the temperature of the discharged flue gas is low, and the emission of harmful substances can be reduced through a tail gas treatment device.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.