CN109083673B - Mine on-demand heating system - Google Patents
Mine on-demand heating system Download PDFInfo
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- CN109083673B CN109083673B CN201811220234.1A CN201811220234A CN109083673B CN 109083673 B CN109083673 B CN 109083673B CN 201811220234 A CN201811220234 A CN 201811220234A CN 109083673 B CN109083673 B CN 109083673B
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 32
- 238000009423 ventilation Methods 0.000 claims abstract description 146
- 239000002918 waste heat Substances 0.000 claims abstract description 65
- 238000011084 recovery Methods 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 48
- 238000012544 monitoring process Methods 0.000 claims description 26
- 238000012546 transfer Methods 0.000 claims description 16
- 230000007613 environmental effect Effects 0.000 claims description 13
- 238000004088 simulation Methods 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 5
- 238000005065 mining Methods 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 231100000331 toxic Toxicity 0.000 description 3
- 230000002588 toxic effect Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- NNPPMTNAJDCUHE-UHFFFAOYSA-N isobutane Chemical compound CC(C)C NNPPMTNAJDCUHE-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 206010021143 Hypoxia Diseases 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000003287 bathing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000007954 hypoxia Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000001282 iso-butane Substances 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/006—Ventilation at the working face of galleries or tunnels
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B36/00—Heating, cooling, insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
Abstract
The invention relates to the technical field of mining, and provides a mine on-demand heating system which comprises ventilation equipment, a mine on-demand ventilation device, a return air waste heat collection device and a heating controller, wherein the ventilation equipment is connected with the mine on-demand ventilation device; the mine on-demand ventilation device is connected with ventilation equipment to control the ventilation equipment to work; the return air waste heat collecting device is used for collecting heat in mine return air in the air duct; the heat supply controller calculates the waste heat recovery amount of the return air waste heat collecting device according to control data of the mine on-demand ventilation device for controlling the ventilation equipment to work, and determines the newly-increased heat supply amount according to the waste heat recovery amount and a preset heat supply plan. According to the invention, the recovery amount of the waste heat is calculated according to the ventilation condition of the mine on demand, and when the recovery amount of the waste heat does not meet the preset heat supply plan, the newly-increased heat supply amount is determined according to the recovery amount of the waste heat and the preset heat supply plan, so that the heat supply of the mine on demand is realized by combining the recovery amount of the waste heat and the newly-increased heat supply amount, and the waste of energy sources is reduced.
Description
Technical Field
The invention relates to the technical field of mining, in particular to a mine on-demand heating system.
Background
Ventilation management is an important component in the process of mine safety production. Mine ventilation needs to ensure enough fresh air in the pit, so that underground workers can safely work, discomfort can not be caused by hypoxia, the working environment of the workers is improved, and the life safety of the workers is ensured. Therefore, by combining the actual conditions of mines, systematically and scientifically making mine ventilation safety work is very necessary and significant for mine safety production.
In the production process, various ventilation parameters such as the air quantity, the air speed, the relative humidity, the oxygen concentration and the like of a mine are in dynamic changes, and only when ventilation is carried out by fully considering the parameters in the changes, the necessary quantity of fresh air can be continuously conveyed underground, toxic and harmful gases and mineral dust are diluted and removed, and the safety of personnel and equipment is ensured.
Particularly, the mine shaft in the alpine region has lower working temperature and low oxygen content of workers, and only the necessary amount of wind flow is provided for underground in a high-efficiency and energy-saving manner, so that the health of the workers and the normal operation of equipment can be ensured, and the working production efficiency in the alpine region is improved.
The mine return air is a high-quality waste heat resource, and the waste heat of the return air can be used as an energy source for preheating the mine inlet air after being treated.
When the waste heat energy is insufficient to provide enough preheating energy for the mine air inlet, a heating system with other energy sources is started to heat the mine air inlet.
The determination of the air volume in the mine and the determination of the power consumption of the heating system can greatly influence the safe operation of the mine and the consumption of energy sources.
It should be noted that the information of the present invention in the above background section is only for enhancing the understanding of the background of the present invention and thus may include information that does not form the prior art that is already known to those of ordinary skill in the art.
Disclosure of Invention
The invention aims to provide a mine on-demand heating system which at least solves the problem that heat cannot be supplied on demand during mine operation to a certain extent.
Other features and advantages of the invention will be apparent from the following detailed description, or may be learned by the practice of the invention.
The embodiment of the invention provides a mine on-demand heating system, which comprises ventilation equipment, a mine on-demand ventilation device, a return air waste heat collection device and a heating controller; the mine on-demand ventilation device is connected with the ventilation equipment, and the ventilation equipment is controlled to work according to the total air quantity of the mine, personnel data, equipment data and environmental data of each operation point in the mine, which are acquired by the sensor, wherein the total air quantity of the mine is determined according to a preset ventilation plan; the return air waste heat collection device is connected with an air channel in which the ventilation equipment is positioned and used for collecting heat in mine return air in the air channel; the heat supply controller is connected with the mine on-demand ventilation device and the return air waste heat collection device, calculates waste heat recovery amount of the return air waste heat collection device according to control data of the mine on-demand ventilation device for controlling the ventilation device to work, and determines newly-increased heat supply amount according to the waste heat recovery amount and a preset heat supply plan when the waste heat recovery amount does not meet the preset heat supply plan.
In the above-mentioned scheme, the on-demand ventilation device includes: the simulation unit is used for performing simulation operation according to the personnel data, the equipment data and the environment data to obtain simulated wind flow data, wherein the environment data comprises actual wind flow data; and the control unit is used for determining the target working state of the ventilation equipment of each working point according to the simulated wind flow data, the actual wind flow data and the total air quantity of the mine.
In the above scheme, the ventilation equipment comprises a fan and a ventilation structure, the ventilation equipment comprises the fan, the fan comprises a frequency converter and a fan body which are connected, the mine on-demand ventilation device is connected with the frequency converter, and the mine on-demand ventilation device controls the fan body to work by controlling the frequency converter according to the target working state of the ventilation equipment.
The ventilation equipment also comprises a ventilation structure, the mine on-demand ventilation device is connected with a switch of the ventilation structure, and the mine on-demand ventilation device controls the ventilation structure to work according to the target working state of the ventilation equipment.
In the above scheme, the system further comprises: the personnel positioning sensor is used for monitoring the personnel number of each operation point to obtain personnel data and sending the personnel data to the mine on-demand ventilation device; the equipment state monitoring sensor is used for monitoring the equipment state of each operation point to obtain equipment data and sending the equipment data to the mine on-demand ventilation device; and the environment monitoring sensor is used for monitoring the environment state of each operation point to obtain environment data and sending the environment data to the mine on-demand ventilation device.
In the above scheme, the mine on-demand ventilation device is connected with the personnel positioning sensor, the equipment state monitoring sensor, the environment monitoring sensor and the ventilation equipment through a wired communication network and/or a wireless communication network.
In the above-mentioned scheme, return air waste heat collection device includes: a hot water dispenser; the air guide is connected with an air duct where the ventilation equipment is located; the air heat exchanger is connected with the air guide device and used for collecting heat in mine return air in the air duct; and the water heat exchanger is connected with the wind heat exchanger and is used for conducting the heat collected by the wind heat exchanger to the hot water delivery device.
In the above scheme, the system further comprises a temperature sensor for measuring the return air temperature collected by the return air waste heat collecting device; the heat supply controller is in signal connection with the temperature sensor, and the waste heat recovery amount of the return air waste heat collecting device is calculated according to temperature data measured by the temperature sensor and control data of the mine on-demand ventilation device for controlling the ventilation equipment to work.
In the scheme, the system further comprises a hot water utilization device, wherein the hot water utilization device is connected with the water heat exchanger through a hot water delivery device, and the heat delivered by the hot water delivery device is utilized to preheat the inlet air of the mine once.
In the above scheme, the hot water dispenser comprises a circulating water pump for circulating the circulating water between the water heat exchanger and the hot water utilization device.
In the above scheme, the system further comprises: and the heating device is connected with the heat supply controller and is used for carrying out secondary preheating on the inlet air of the mine according to the newly-increased heat supply quantity determined by the heat supply controller.
The technical scheme provided by the embodiment of the invention can have the following beneficial effects:
according to the technical scheme provided by the exemplary embodiment of the invention, the waste heat recovery amount of the return air waste heat collecting device is calculated according to the on-demand ventilation condition of the mine, when the waste heat recovery amount does not meet the preset heat supply plan, the newly-increased heat supply amount is determined according to the waste heat recovery amount and the preset heat supply plan, and the on-demand heat supply of the mine is realized by combining the waste heat recovery amount and the newly-increased heat supply amount, so that the waste of energy sources is reduced.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention. It is evident that the drawings in the following description are only some embodiments of the present invention and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
FIG. 1 schematically illustrates a block diagram of a mine on-demand ventilation system, in accordance with an embodiment of the present invention;
FIG. 2 schematically illustrates a block diagram of another mine on-demand ventilation system, in accordance with an embodiment of the present invention;
fig. 3 schematically illustrates a block diagram of a return air waste heat collection apparatus according to an embodiment of the present invention;
fig. 4 schematically shows an operation schematic of a wind heat exchanger and a water heat exchanger according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments may be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus detailed descriptions thereof will be omitted.
Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of an icon to another component, these terms are used in this specification for convenience only, such as in terms of the orientation of the examples described in the figures. It will be appreciated that if the modules of the figures are flipped upside down, the components recited as "up" will become "down". Other relative terms such as "high," "low," "top," "bottom," "left," "right," and the like are also intended to have similar meanings. When a structure is "on" another structure, it may mean that the structure is integrally formed with the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure through another structure.
The terms "a," "an," "the" are used to indicate the presence of one or more elements/components/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. in addition to the listed elements/components/etc.
Fig. 1 schematically illustrates a mine on-demand heating system of an exemplary embodiment of the present disclosure, referring to fig. 1, a mine on-demand heating system 100 includes a ventilation apparatus 120, a mine on-demand ventilation apparatus 110, a return air waste heat collection apparatus 130, and a heating controller 140; the mine on-demand ventilation device 110 is connected with the ventilation equipment 120, and the ventilation equipment 120 is controlled to work according to the total air quantity of the mine, personnel data, equipment data and environmental data of each operation point in the mine, which are acquired by the sensor, wherein the total air quantity of the mine is determined according to a preset ventilation plan; the return air waste heat collection device 130 is connected with an air channel where the ventilation equipment 120 is positioned and used for collecting heat in mine return air in the air channel; the heating controller 140 is connected to the mine on-demand ventilation device 110 and the return air waste heat collection device 130, calculates the waste heat recovery amount of the return air waste heat collection device 130 according to control data of the mine on-demand ventilation device 110 controlling the ventilation device 120 to operate, and determines the newly increased heating amount according to the waste heat recovery amount and the preset heating schedule when the waste heat recovery amount does not satisfy the preset heating schedule.
In the scheme, the waste heat recovery amount of the return air waste heat collecting device is calculated according to the on-demand ventilation condition of the mine, when the waste heat recovery amount does not meet a preset heat supply plan, the newly-increased heat supply amount is determined according to the waste heat recovery amount and the preset heat supply plan, and on-demand heat supply of the mine is realized by combining the waste heat recovery amount and the newly-increased heat supply amount, so that the waste of energy sources is reduced.
If the waste heat recovery quantity just meets a preset heat supply plan, the part of return air waste heat is used for heating the air inlet of the mine, and the newly increased heat supply quantity is not required to be determined; if the waste heat recovery amount is more than the preset heat supply plan, the part of return air waste heat can be used for heating the redundant part except the air inlet of the mine and for heating or bathing in a mining area and other heat demands.
Here, the ventilation device 120 includes a fan including a frequency converter and a fan body connected, the mine on-demand ventilation device 110 is connected to the frequency converter, and the mine on-demand ventilation device 110 controls the fan body to operate by controlling the frequency converter according to a target operation state of the ventilation device 120.
The ventilation device 120 further includes a ventilation structure, and the mine on-demand ventilation device 110 is connected to a switch of the ventilation structure, and the mine on-demand ventilation device 110 controls the ventilation structure to work according to a target working state of the ventilation device 120.
According to an exemplary embodiment of the present disclosure, the ventilation device 120 includes a blower and a ventilation structure. These fans and ventilation structures are installed in the mine and can be remotely monitored and controlled by the mine on-demand ventilation device 110.
The fan comprises a frequency converter and a fan body which are connected, the mine on-demand ventilation device 110 is connected with the frequency converter, and the mine on-demand ventilation device 110 controls the fan body to work by controlling the frequency converter according to the target working state of the ventilation equipment 120. The on-demand ventilation device 110 is connected to a switch of the ventilation structure, and the on-demand ventilation device 110 controls the ventilation structure to operate according to the target operating state of the ventilation device 120.
The fans of the mine comprise a main fan, an auxiliary fan and a local fan, and the air quantity of each operation point can be adjusted by controlling the fans. The ventilation area of the ventilation structure can be adjusted by adjusting the on-off state of the ventilation structure, and the ventilation can be realized as required by combining the control of the fan, so that the requirement of underground safe operation is met, and the ventilation energy consumption is reduced.
In an embodiment of the present invention, the system further includes: a personnel positioning sensor 203 for monitoring the personnel number of each operation point to obtain personnel data, and sending the personnel data to the mine on-demand ventilation device 110; an equipment status monitoring sensor 204 for monitoring the equipment status of each operation point to obtain equipment data, and sending the equipment data to the mine on-demand ventilation device 110; environmental monitoring sensors 205 are used to monitor the environmental status of each job site to obtain environmental data and send to the mine on-demand ventilation device 110.
Here, the device data includes a device type, a device model number, a device number, and a device operation state of the device. The type, model, number and running state of the equipment at each working point in the mine can influence the air quantity required by the working point.
The personnel data includes the number of personnel at each job site in the mine. The number of workers at each working point in the mine can also affect the air quantity required by the working point.
The environmental data comprise parameters such as toxic and harmful gas concentration, oxygen content, temperature, humidity, actual wind flow data and the like. These parameters also affect the air demand at the point of operation.
The person positioning sensor 203 may be a radio frequency identification device, a wireless sensor identification device, or a face recognition device installed at each working point, and is not limited thereto. When a wireless radio frequency identification device is adopted to identify a worker, the worker needs to wear a radio frequency tag; when the wireless sensor recognition device is used for recognizing the staff, the staff needs to wear the wireless sensor. For example, radio frequency tags may be provided on purpose-built mining apparel and wireless sensors may be provided in the helmets of personnel.
The equipment status monitoring sensor 204 may be a monitoring module provided on the equipment at each job site. The monitoring module can acquire equipment information such as equipment type, equipment model, equipment number and the like, acquire information such as equipment operation state and the like in real time, and send the information to the mine on-demand ventilation device 110 on the ground.
The environmental monitoring sensor 205 may be a sensor group provided at each operating point, and the sensor group may include a toxic gas concentration sensor, an oxygen concentration sensor, a temperature sensor, a humidity sensor, a wind speed sensor, and the like. The sensor group can acquire environmental data such as toxic and harmful gas concentration, oxygen content, temperature, humidity, actual wind flow speed and the like, and send the environmental data to the mine on-demand ventilation device 110 on the ground.
According to an exemplary embodiment of the present disclosure, the mine on-demand ventilation device 110 is connected to the personnel location sensor 203, the equipment status monitoring sensor 204, the environmental monitoring sensor 205, and the ventilation equipment 120 via a wired communication network and a wireless communication network. In this way, sharing of personnel data, equipment data and environmental data can be achieved, which can be more conveniently transmitted to the mine on-demand ventilation device 110 at the surface.
The on-demand ventilation device comprises a simulation unit and a control unit, wherein the simulation unit performs simulation operation according to personnel data, equipment data and environment data to obtain simulated wind flow data, and the environment data comprises actual wind flow data; and the control unit is used for determining the target working state of the ventilation equipment at each working point according to the simulated wind flow data, the actual wind flow data and the total air quantity of the mine.
The mine on-demand ventilation device 110 calls a three-dimensional ventilation simulation system to perform dynamic simulation according to the acquired local parameters such as personnel data, equipment data, environment data and the like of each operation point of the mine, and obtains simulated wind flow data. The on-demand ventilation device 110 for mines then obtains the difference between the simulated airflow data and the actual airflow data of each working point by comparing the simulated airflow data and the actual airflow data, determines the target working state of the ventilation equipment of each working point according to the difference and the total air volume data, and controls the ventilation equipment to work according to the target working state.
According to an exemplary embodiment of the present disclosure, the on-demand mine ventilation device 110 determines the total air volume of the mine according to a preset ventilation schedule. Specifically, the on-demand ventilation device 110 for a mine first determines working conditions of the mine according to conditions of the mine; determining the total air quantity of the mine according to working conditions and a preset ventilation plan; the ventilation plan represents the corresponding relation between the working condition and the total air quantity of the mine.
Here, the operating conditions include a full load operating condition, a normal load operating condition, a general load operating condition, and a light load operating condition. According to the stoping process and the production plan arrangement, the production capacity of the mine is matched with personnel, equipment and operation points according to time nodes according to a normal working system, and the mine ventilation is divided into the four working conditions. The corresponding relation between various working conditions obtained according to the ventilation plan and the total air quantity of the mine, time and the duty ratio is as follows:
full load: the total required air volume is 650m 3 S, time 2h, 8% of the total;
normal load: the total required air quantity is 560m 3 S, time 12h, 50% of the total;
general load: the total required air quantity is 450m 3 S, time 6h, accounting for 25%;
light load: the total required air quantity is 300m 3 S, time 4h, 17%.
As shown in fig. 3, the return air waste heat collecting apparatus 130 in the exemplary embodiment of the present disclosure includes: a hot water dispenser 134; the air guide 131 is connected with an air duct where the ventilation equipment 120 is positioned; the air heat exchanger 132 is connected with the air guide 131 and used for collecting heat in mine return air in the air duct; the water heat exchanger 133 is connected to the wind heat exchanger 132, and transfers heat collected by the wind heat exchanger 132 to the hot water dispenser 134.
In addition, the system also comprises a temperature sensor for measuring the return air temperature collected by the return air waste heat collection device 130; the heating controller 140 is in signal connection with the temperature sensor, and calculates the recovery amount of the waste heat of the return air waste heat collecting device 130 according to the temperature data measured by the temperature sensor and the control data of the mine on-demand ventilation device 110 for controlling the ventilation device 120 to operate.
The system also comprises a hot water utilization device, the hot water delivery device comprises a circulating water pump, the hot water utilization device is connected with the water heat exchanger through the hot water delivery device, and the hot water delivery device is used for circulating water between the water heat exchanger and the hot water utilization device. The hot water utilizing device preheats the inlet air of the mine for one time by utilizing the heat transmitted by the hot water delivering device.
As shown in fig. 4, the wind heat exchanger 132 includes an evaporator 401 and a compressor 402, and the water heat exchanger 133 includes a condenser 403 and an expansion valve 404. The evaporator 401, the compressor 402, the condenser 403, and the expansion valve 404 constitute an air source heat pump unit. The evaporator 401, the compressor 402, the condenser 403 and the expansion valve 404 may be connected by copper pipes, and heat transfer medium is stored in the copper pipes. The heat transfer working medium can be isobutane, n-butane, freon and the like or a combination of the above substances. The boiling point of the heat transfer working medium is very low under normal pressure and is minus 40 ℃, the solidifying point is minus 100 ℃, and the substance is in a liquid state under the condition of low temperature. Therefore, after the heat transfer working medium contacts with mine return air (the temperature is approximately 8 ℃), the heat transfer working medium is quickly vaporized.
The following details the working principle of how the wind heat exchanger 132 and the water heat exchanger 133 transfer heat from the mine return air to the circulating water when in operation:
the heat transfer medium in the evaporator 401 absorbs heat in the mine return air, the heat transfer medium is vaporized in the evaporator 401, the heat transfer medium in a low-temperature and low-pressure state is compressed by the compressor 402 and then becomes gas in a high-temperature and high-pressure state, and the gas in the high-temperature and high-pressure state is sent to the condenser 403. Because the temperature of the heat transfer working medium is higher than that of the circulating water, the heat transfer working medium is changed from gas to liquid under the action of the circulating water with lower temperature, and simultaneously, heat is released, so that the temperature of the circulating water is increased. After the heat transfer medium in the liquid state is throttled by the expansion valve 404, the heat transfer medium returns to the evaporator 401 under the pressure effect, and the above actions are repeated. In the above cycle, heat transfer from the mine return air to the circulating water is achieved.
The system further comprises a heating device connected with the heat supply controller 140 and used for carrying out secondary preheating on the inlet air of the mine according to the newly increased heat supply quantity determined by the heat supply controller 140.
In the on-demand heating system for the mine provided by the exemplary embodiment of the invention, the waste heat recovery amount of the return air waste heat collecting device is calculated according to the on-demand ventilation condition of the mine, when the waste heat recovery amount does not meet the preset heating plan, the newly-increased heating amount is determined according to the waste heat recovery amount and the preset heating plan, and the on-demand heating of the mine is realized by combining the waste heat recovery amount and the newly-increased heating amount, so that the waste of energy sources is reduced.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It is to be understood that the invention is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (8)
1. The on-demand heating system for the mine is characterized by comprising ventilation equipment, an on-demand ventilation device for the mine, a return air waste heat collection device, a heating controller, a personnel positioning sensor, an equipment state monitoring sensor and an environment monitoring sensor;
the mine on-demand ventilation device is connected with the ventilation equipment, and the ventilation equipment is controlled to work according to the total air quantity of the mine, personnel data, equipment data and environmental data of each operation point in the mine, which are acquired by the sensor, wherein the total air quantity of the mine is determined according to a preset ventilation plan;
the return air waste heat collection device is connected with an air channel in which the ventilation equipment is positioned and used for collecting heat in mine return air in the air channel;
the heat supply controller is connected with the mine on-demand ventilation device and the return air waste heat collection device, calculates the waste heat recovery amount of the return air waste heat collection device according to control data of the mine on-demand ventilation device for controlling the ventilation equipment to work, and determines newly-increased heat supply amount according to the waste heat recovery amount and a preset heat supply plan when the waste heat recovery amount does not meet the preset heat supply plan;
wherein the on-demand ventilation device comprises:
the simulation unit is used for performing simulation operation according to the personnel data, the equipment data and the environment data to obtain simulated wind flow data, wherein the environment data comprises actual wind flow data;
the control unit is used for determining the target working state of the ventilation equipment of each working point according to the simulated wind flow data, the actual wind flow data and the total wind quantity of the mine;
the personnel positioning sensor is used for monitoring the personnel number of each operation point to obtain personnel data and sending the personnel data to the mine on-demand ventilation device;
the equipment state monitoring sensor is used for monitoring the equipment state of each operation point to obtain equipment data and sending the equipment data to the mine on-demand ventilation device;
the environment monitoring sensor is used for monitoring the environment state of each working point to obtain environment data and sending the environment data to the mine on-demand ventilation device.
2. The system of claim 1, wherein the ventilation device comprises a fan and a ventilation structure, the fan comprises a frequency converter and a fan body which are connected, the mine on-demand ventilation device is connected with the frequency converter, and the mine on-demand ventilation device controls the fan body to work by controlling the frequency converter according to the target working state of the ventilation device;
the mine on-demand ventilation device is connected with the switch of the ventilation structure, and the mine on-demand ventilation device controls the ventilation structure to work according to the target working state of the ventilation equipment.
3. The system of claim 1, wherein the mine on-demand ventilation device is connected to the personnel location sensor, the equipment status monitoring sensor, the environmental monitoring sensor, and the ventilation equipment via a wired and/or wireless communication network.
4. A system as set forth in claim 3 wherein said return air waste heat collection assembly comprises:
a hot water dispenser;
the air guide is connected with an air duct where the ventilation equipment is located;
the air heat exchanger is connected with the air guide device and used for collecting heat in mine return air in the air duct;
and the water heat exchanger is connected with the wind heat exchanger and is used for conducting the heat collected by the wind heat exchanger to the hot water delivery device.
5. The system of claim 4, further comprising a temperature sensor that measures the return air temperature collected by the return air waste heat collection device;
the heat supply controller is in signal connection with the temperature sensor, and the waste heat recovery amount of the return air waste heat collecting device is calculated according to temperature data measured by the temperature sensor and control data of the mine on-demand ventilation device for controlling the ventilation equipment to work.
6. The system of claim 5, further comprising a hot water utility connected to the water heat exchanger via a hot water dispenser, the hot water dispenser being configured to transfer heat to pre-heat the intake air of the mine.
7. The system of claim 6, wherein the hot water dispenser includes a circulating water pump for circulating water between the water heat exchanger and the hot water utility.
8. The system of claim 7, wherein the system further comprises:
and the heating device is connected with the heat supply controller and is used for carrying out secondary preheating on the inlet air of the mine according to the newly-increased heat supply quantity determined by the heat supply controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN109958470B (en) * | 2019-03-20 | 2020-07-03 | 东北大学 | Mine is with even low energy consumption circulation heating equipment of heat dissipation |
| CN114320422A (en) * | 2021-12-20 | 2022-04-12 | 中国恩菲工程技术有限公司 | Mine on-demand ventilation heat load control system and method |
| CN114659195B (en) * | 2022-03-24 | 2024-02-09 | 广东省电信规划设计院有限公司 | Heat recycling method and device and computer storage medium |
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