阅读说明：本技术 一种矿井排风余热利用装置及其方法 (Mine exhaust waste heat utilization device and method ) 是由 孙猛 吴学慧 岳丰田 高涛 魏京胜 张勇 石荣剑 陆路 于 2019-10-11 设计创作，主要内容包括：本发明公开了一种矿井排风余热利用装置及其方法,包括风-风换热装置、与所述风-风换热装置相连通的凝结水固化取热装置；所述风-风换热装置的内部设置有换热管；所述凝结水固化取热装置的入风口和出风口上均设置有阀门,所述凝结水固化取热装置的底部设置有排水泵。本发明将风-风换热装置与凝结水固化换热装置设置为一体的上下结构,减小了凝结水输送能耗与热损,提高了换热效率,缩减了换热系统的体积；凝结水排出方便,并对凝结水的显热与部分潜热进行再次回首利用,提高了排风余热的利用效率；整体系统简单,体积小,易于建造,维护方便操作方便,效果明显。(The invention discloses a mine exhaust waste heat utilization device and a method thereof, wherein the mine exhaust waste heat utilization device comprises a wind-wind heat exchange device and a condensed water solidification heat extraction device communicated with the wind-wind heat exchange device; a heat exchange tube is arranged in the wind-wind heat exchange device; the air inlet and the air outlet of the condensed water curing and heat-taking device are both provided with valves, and the bottom of the condensed water curing and heat-taking device is provided with a drainage pump. According to the invention, the wind-wind heat exchange device and the condensed water solidification heat exchange device are arranged into an integrated upper and lower structure, so that the energy consumption and heat loss of condensed water conveying are reduced, the heat exchange efficiency is improved, and the volume of a heat exchange system is reduced; the condensed water is convenient to discharge, and the sensible heat and part latent heat of the condensed water are recycled again, so that the utilization efficiency of the exhaust waste heat is improved; the whole system is simple, small in size, easy to build, convenient to maintain and operate and obvious in effect.)

1. A mine exhaust waste heat utilization device is characterized by comprising a wind-wind heat exchange device and a condensed water solidification heat-taking device communicated with the wind-wind heat exchange device; the wind-wind heat exchange device and the condensed water curing and heat taking device are of an integrated up-and-down structure;

a heat exchange tube is arranged in the wind-wind heat exchange device, the wind-wind heat exchange device is provided with an exhaust inlet and an exhaust outlet, one end of the heat exchange tube is communicated with the fresh air inlet, and the other end of the heat exchange tube is communicated with the condensed water solidification heat-taking device;

the condensed water curing and heat-taking device is provided with an air inlet communicated with the fresh air inlet and an air outlet communicated with the heat exchange tube; condensed water generated in the wind-wind heat exchange device flows into the condensed water solidification heat-taking device through the U-shaped communicating pipe; the air inlet and the air outlet of the condensed water curing and heat-taking device are both provided with valves, and the bottom of the condensed water curing and heat-taking device is provided with a drainage pump.

2. The mine exhaust waste heat utilization device according to claim 1, wherein the bottom wall of the wind-wind heat exchange device is a conical end closure, the bottom of the end closure is provided with the U-shaped communication pipe, and the U-shaped communication pipe is communicated with the wind-wind heat exchange device.

3. The mine exhaust waste heat utilization device according to claim 2, wherein a motor is fixed at the center of the bottom of the end enclosure baffle, an output shaft of the motor is provided with an agitating ice crushing blade which rotates coaxially with the motor, a gap is formed between the agitating ice crushing blade and the bottom wall of the condensed water solidifying and heat extracting device, and an air outlet and an air inlet of the condensed water solidifying and heat extracting device are higher than the agitating ice crushing blade.

4. The mine exhaust air waste heat utilization device according to claim 2 or 3, wherein the wind-wind heat exchange device is communicated with the condensed water curing heat extraction device through a U-shaped pipe, one end of the U-shaped pipe is communicated with a heat exchange pipe of the wind-wind heat exchange device, and the other end of the U-shaped pipe is communicated with an air outlet of the condensed water curing heat extraction device.

5. A method for utilizing mine exhaust waste heat is characterized by comprising the following steps:

the mine fresh air is divided into two parts, one part enters a heat exchange pipe of the air-air heat exchange device to exchange heat with mine exhaust air in the air-air heat exchange device, and condensed water generated in the heat exchange process enters the condensed water solidification heat taking device through a U-shaped communicating pipe filled with water in advance; the other part of the condensed water enters the condensed water solidification heat-taking device through an air inlet of the condensed water solidification heat-taking device to exchange heat with the condensed water;

when the water surface in the condensed water solidification heat-taking device reaches the height of the stirring crushed ice blades, air valves of an air inlet and an air outlet of the condensed water solidification heat-taking device are opened, fresh air enters the condensed water solidification heat-taking device to exchange heat with the condensed water, meanwhile, the stirring crushed ice blades are driven to rotate by the stirring crushed ice motor, and the crushed ice and cold water after heat exchange are periodically discharged through the drainage pump.

Technical Field

The invention relates to the technical field of mine exhaust, in particular to a mine exhaust waste heat utilization device and a mine exhaust waste heat utilization method.

Background

Mine ventilation is a measure which must be taken to ensure the safety of mining production, the total ventilation volume of fresh air is generally 3000-20000m3/min, and the ventilation temperature of fresh air at a wellhead is required to be not lower than 2 ℃ according to the specification, so that a large amount of heat energy is required for wellhead heat preservation in winter in cold regions. The mine exhaust air volume is equivalent to the fresh air volume under normal conditions. In winter, the exhaust air temperature is generally 15-25 ℃, the relative humidity is more than 90%, and the composite material contains a large amount of sensible heat and latent heat and is an excellent renewable green energy source. The full utilization of the mine exhaust waste heat has obvious economic and environmental protection values. Because the humidity of the mine exhaust air is high, condensed water can be generated in the waste heat utilization process, the temperature of the condensed water is 5-10 ℃ generally, and the water amount is 3-20 t/h. The full utilization of sensible heat and latent heat of the water has considerable economic value.

Disclosure of Invention

Aiming at the technical defects, the invention aims to provide a mine exhaust waste heat utilization device and a method thereof, which are simple in structure, suitable for cold and severe cold areas, capable of fully acquiring solidification latent heat of condensed water generated in exhaust and heat exchange processes thereof, and capable of safely, reliably and efficiently utilizing exhaust waste heat.

In order to solve the technical problems, the invention adopts the following technical scheme:

the invention provides a mine exhaust waste heat utilization device, which comprises a wind-wind heat exchange device and a condensed water solidification heat-taking device communicated with the wind-wind heat exchange device; the wind-wind heat exchange device and the condensed water curing and heat taking device are of an integrated up-and-down structure;

a heat exchange tube is arranged in the wind-wind heat exchange device, the wind-wind heat exchange device is provided with an exhaust inlet and an exhaust outlet, one end of the heat exchange tube is communicated with the fresh air inlet, and the other end of the heat exchange tube is communicated with the condensed water solidification heat-taking device;

the condensed water curing and heat-taking device is provided with an air inlet communicated with the fresh air inlet and an air outlet communicated with the heat exchange tube; condensed water generated in the wind-wind heat exchange device flows into the condensed water solidification heat-taking device through the U-shaped communicating pipe; the air inlet and the air outlet of the condensed water curing and heat-taking device are both provided with valves, and the bottom of the condensed water curing and heat-taking device is provided with a drainage pump.

Preferably, the bottom wall of the wind-wind heat exchange device is a conical end enclosure baffle, the bottom of the end enclosure baffle is provided with the U-shaped communicating pipe, and the U-shaped communicating pipe is communicated with the wind-wind heat exchange device.

Preferably, the bottom center of head baffle is fixed with the motor, be provided with on the output shaft of motor rather than coaxial pivoted stirring trash ice blade, stirring trash ice blade with the clearance has between the diapire of condensate water solidification heat extraction device, the air outlet and the air intake of condensate water solidification heat extraction device all are higher than stirring trash ice blade.

Preferably, the wind-wind heat exchange device is communicated with the condensed water curing heat-taking device through a U-shaped pipe, one end of the U-shaped pipe is communicated with a heat exchange pipe of the wind-wind heat exchange device, and the other end of the U-shaped pipe is communicated with an air outlet of the condensed water curing heat-taking device.

A method for utilizing mine exhaust waste heat specifically comprises the following steps:

the mine fresh air is divided into two parts, one part enters a heat exchange pipe of the air-air heat exchange device to exchange heat with mine exhaust air in the air-air heat exchange device, and condensed water generated in the heat exchange process enters the condensed water solidification heat taking device through a U-shaped communicating pipe filled with water in advance; the other part of the condensed water enters the condensed water solidification heat-taking device through an air inlet of the condensed water solidification heat-taking device to exchange heat with the condensed water;

when the water surface in the condensed water solidification heat-taking device reaches the height of the stirring crushed ice blades, air valves of an air inlet and an air outlet of the condensed water solidification heat-taking device are opened, fresh air enters the condensed water solidification heat-taking device to exchange heat with the condensed water, meanwhile, the stirring crushed ice blades are driven to rotate by the stirring crushed ice motor, and the crushed ice and cold water after heat exchange are periodically discharged through the drainage pump.

The invention has the beneficial effects that: the wind-wind heat exchange device and the condensed water solidification heat exchange device are arranged into an integral upper and lower structure, so that the energy consumption and heat loss of condensed water conveying are reduced, the heat exchange efficiency is improved, and the volume of a heat exchange system is reduced; the condensed water is convenient to discharge, and the sensible heat and part latent heat of the condensed water are recycled again, so that the utilization efficiency of the exhaust waste heat is improved; the whole system is simple, small in size, easy to build, convenient to maintain and operate and obvious in effect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram (a transparent shell schematic) of an asphalt sampling device according to an embodiment of the present invention;

fig. 2 is a sectional view taken along the line a-a in fig. 1.

Description of reference numerals:

1-an exhaust inlet, 2-a fresh air inlet, 3-a motor, 4-a stirring crushed ice blade, 5-an air outlet, 6-an exhaust outlet, 7-a U-shaped pipe, 8-a wind-wind heat exchange device, 9-a drainage pump, 10-a U-shaped communicating pipe, 11-a sealing head baffle, 14-a condensed water surface, 15-a heat exchange pipe, 16-a condensed water solidification heat-taking device and 17-a valve.

Detailed Description

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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.