CN210033528U - Wellhead anti-freezing system based on coal mine ventilation air methane - Google Patents
Wellhead anti-freezing system based on coal mine ventilation air methane Download PDFInfo
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- CN210033528U CN210033528U CN201920524561.XU CN201920524561U CN210033528U CN 210033528 U CN210033528 U CN 210033528U CN 201920524561 U CN201920524561 U CN 201920524561U CN 210033528 U CN210033528 U CN 210033528U
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Abstract
The utility model relates to the field of coal mining, and discloses a wellhead anti-freezing system based on coal mine ventilation air methane, which comprises a ventilation air methane heating box, a ventilation air methane heating and cleaning device, a first water source heat pump unit, a second water source heat pump unit and a wellhead heater, wherein a first heat exchanger, a second heat exchanger and a spray bar are arranged in the ventilation air methane heating box; the first heat exchanger is communicated with an evaporator of the second water source heat pump unit through a pipeline, and the second heat exchanger is communicated with the evaporator of the first water source heat pump unit through a pipeline; the wellhead heater is internally provided with a first dividing wall type heat exchanger and a second dividing wall type heat exchanger which are used for carrying out two-stage heating on fresh air, and a blower which is used for feeding the heated fresh air into a wellhead; the first dividing wall type heat exchanger and the second dividing wall type heat exchanger are respectively connected with condenser ends of the first water source heat pump unit and the second water source heat pump unit through pipelines. The utility model discloses an adopt clean energy, reduce environmental pollution, but wide application in the colliery field.
Description
Technical Field
The utility model relates to a coal mining field, concretely relates to a well head anti-freezing system based on coal mine ventilation air methane for the colliery.
Background
The existing mine ventilation air methane waste heat recycling technology of coal mines mainly has three completely different technical routes, one is a spraying ventilation air methane heat pump technology, the spraying heat taking has the defects that the heat taking quantity is small, a large amount of dust is easy to accumulate and block a nozzle, and an antifreeze agent is required to be continuously added after the ventilation air methane temperature is lower than 10 ℃, the other is a direct evaporation ventilation air methane source heat pump technology, the direct evaporation heat exchange has the problems that the heat exchanger is easy to block due to the fact that more dust is mixed in ventilation air methane, the air resistance of the ventilation air methane heat exchanger is large, the direct evaporation heat taking also has the defects that the heat exchange area of an evaporator is small, the heating efficiency of the ventilation air methane source heat pump is influenced by the problem that the evaporator is frosted and melted when the ventilation air methane temperature is low, the distance between a ventilation air methane heat taking device and a heat pump unit and the height difference are limited, the application and popularization of the direct evaporation ventilation air methane heat pump source are, with new trend and air return pipeline setting from top to bottom, directly utilize the return air to carry out the direct heating through the heat pipe to the new trend, there is the influence that receives new trend well and air exhaust well distance, simultaneously because there is a large amount of dusts in the ventilation air methane, can gather on the surface of heat pipe, long-term in the past, can influence the heat exchange efficiency of heat pipe, can not guarantee the air inlet temperature of well head new trend.
Meanwhile, the three ventilation air waste heat utilization technologies all have the problems of initial investment or energy conservation in operation, and when part of the ventilation air waste heat utilization technologies are used in coal mines, the coal is saved, energy is not saved, and the problems that the clean energy is adopted for replacing the coal, the energy-saving economic benefit is not obvious, the popularization difficulty is high and the like are solved.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the existing coal mine ventilation air methane waste heat utilization process and the defects in the mine air heating mode, the invention aims to provide a wellhead anti-freezing system based on coal mine ventilation air methane, which has the advantages of small running wind resistance, no influence on the normal running of ventilation air methane, high comprehensive energy efficiency of a ventilation air methane waste heat utilization system, no limitation of use regions and reduced environmental pollution.
In order to solve the technical problem, the utility model discloses a technical scheme be: a wellhead anti-freezing system based on coal mine ventilation air comprises a ventilation air heating box, a ventilation air heating cleaning device, a first water source heat pump unit, a second water source heat pump unit and a wellhead heater, wherein a first heat exchanger, a second heat exchanger and a spray bar are arranged in the ventilation air heating box; refrigerant is arranged in the first heat exchanger and the second heat exchanger, the first heat exchanger is communicated with an evaporator of the second water source heat pump unit through a pipeline, and the second heat exchanger is communicated with the evaporator of the first water source heat pump unit through a pipeline; the first dividing wall type heat exchanger and the second dividing wall type heat exchanger are used for carrying out two-stage heating on fresh air, and a blower is used for sending the heated fresh air into a wellhead; the ventilation air methane heat-taking cleaning device is connected with a spraying row through a pipeline, and the spraying row is opposite to the first heat exchanger and the second heat exchanger.
And a second secondary refrigerant circulating pump is arranged on a pipeline between the second water source heat pump unit and the first heat exchanger, and a first secondary refrigerant circulating pump is arranged on a pipeline between the first water source heat pump unit and the second heat exchanger.
And a second hot water circulating pump is arranged on a pipeline between the second water source heat pump unit and the first dividing wall type heat exchanger, and a first hot water circulating pump is arranged on a pipeline between the first water source heat pump unit and the second hot water circulating pump.
And a cleaning pump is arranged on a pipeline between the ventilation air methane heat-taking cleaning device and the spray row and is used for conveying the ventilation air methane heat-taking cleaning device into the spray row so as to clean or defrost the first heat exchanger and the second heat exchanger.
The ventilation air methane heat-taking cleaning device comprises a sewage drainage tank and a flushing water tank, wherein a water supplementing electromagnetic valve and a water drainage electromagnetic valve are arranged on the sewage drainage tank, and a cleaning pump is arranged on the flushing water tank.
The first heat exchanger and the second heat exchanger are made of stainless steel or red copper or anticorrosive hydrophilic aluminum foil.
A well head anti-freezing system based on coal mine ventilation air methane comprises a plurality of ventilation air methane heat-taking boxes and a plurality of well head heaters.
Compared with the prior art, the utility model following beneficial effect has: the utility model discloses heat in the make full use of colliery ventilation air methane through regarding the ventilation air methane as the heat source, utilizes water source heat pump set, with the heat transport in the ventilation air methane to the technology hot-water aquatic, as the heat source of well head heater, the heating new trend has improved the whole efficiency of the frostproofing air heating system of well head, and energy-concerving and environment-protective compares energy-conserving advantage obvious with the frostproofing mode of traditional pit shaft, can replace coal fired boiler completely. Furthermore, the utility model discloses a water source heat pump unit, because the heat load reduces during the operation, can select many heat pump unit parallel operation, the quantity of the water source heat pump unit who drops into the operation is selected according to outdoor ambient temperature change, can reduce heat pump equipment's working costs, and heat pump unit operating duration reduces, the energy consumption reduces very obviously, the operation is reliable, it is energy-conserving showing, can realize the colliery and subtract coal and reduce discharging, save working costs and adopt clean energy, reduce environmental pollution, effectively utilize ventilation air waste heat resource, energy saving and environmental protection, and the device has good practicality.
Drawings
Fig. 1 is the embodiment of the utility model provides a well head anti-freezing system's based on coal mine ventilation air methane structure schematic diagram.
In the figure, 1 is a ventilation air methane heat-taking box, 2 is a first water source heat pump unit, 3 is a wellhead heater, 4 is a second hot water circulating pump, 5 is a first hot water circulating pump, 6 is a second water source heat pump unit, 7 is a first secondary refrigerant circulating pump, 8 is a cleaning pump, 9 is a ventilation air methane heat-taking cleaning device, 10 is a second secondary refrigerant circulating pump, 11 is a drainage electromagnetic valve, 12 is a water replenishing electromagnetic valve, 21 is a first heat exchanger, 22 is a spray row, 23 is a second heat exchanger, 31 is a first dividing wall type heat exchanger, 32 is a second dividing wall type heat exchanger, and 33 is a blower.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in figure 1, the embodiment of the utility model provides a well head system of preventing frostbite based on coal mine ventilation air methane, including ventilation air methane heat-taking box 1, ventilation air methane heat-taking belt cleaning device 9, first water source heat pump set 2, second water source heat pump set 6 and well head heater 3. The ventilation air methane heating box 1 is connected in series in a ventilation air methane loop of a coal mine, and a first heat exchanger 21, a second heat exchanger 23 and a spray row 22 are arranged in the ventilation air methane heating box 1; refrigerants are arranged in the first heat exchanger 21 and the second heat exchanger 23, the first heat exchanger 21 is communicated with an evaporator of the second water source heat pump unit 6 through a pipeline, and the second heat exchanger 23 is communicated with an evaporator of the first water source heat pump unit 2 through a pipeline; a first dividing wall type heat exchanger 31 and a second dividing wall type heat exchanger 32 for performing double-stage heating on fresh air and a blower 33 for sending the heated fresh air to a wellhead are arranged in the wellhead heater 3, hot water is arranged in the first dividing wall type heat exchanger 31 and the second dividing wall type heat exchanger 32, the first dividing wall type heat exchanger 31 is connected with a condenser end of the first water source heat pump unit 2 through a pipeline, and the second dividing wall type heat exchanger 32 is connected with a condenser end of the second water source heat pump unit 6 through a pipeline; the ventilation air methane heat-taking cleaning device 9 is connected with a spray row 22 through a pipeline, and the spray row 22 is over against the first heat exchanger 21 and the second heat exchanger 23.
Specifically, as shown in fig. 1, a second secondary refrigerant circulating pump 10 is disposed on a pipeline between the second water source heat pump unit 6 and the first heat exchanger 21, and a first secondary refrigerant circulating pump 7 is disposed on a pipeline between the first water source heat pump unit 2 and the second heat exchanger 23. The first secondary refrigerant circulating pump 7 and the second secondary refrigerant circulating pump 10 are used for circulating secondary refrigerants between the evaporator end of the water source heat pump unit and the ventilation air methane heat-taking box. In addition, the whole circulating pipeline also needs a matched constant pressure and water replenishing device and the like.
Specifically, as shown in fig. 1, a second hot water circulation pump 4 is disposed on a pipeline between the second water source heat pump unit 6 and the first dividing wall type heat exchanger 31, and a first hot water circulation pump 5 is disposed on a pipeline between the first water source heat pump unit 2 and the second hot water circulation pump 4. The first hot water circulating pump 5 and the second hot water circulating pump 4 are used for circulating water between the condenser end of the water source heat pump unit and the wellhead heater 3. In addition, the whole circulating pipeline also needs a matched constant pressure and water replenishing device and the like.
Specifically, as shown in fig. 1, a cleaning pump 8 is arranged on a pipeline between the ventilation air methane heat-taking cleaning device 9 and the spray row 22, and the cleaning pump 8 is used for sending the ventilation air methane heat-taking cleaning device 9 into the spray row 22 so as to clean or defrost the first heat exchanger 21 and the second heat exchanger 23.
Specifically, as shown in fig. 1, the ventilation air methane heat-taking cleaning device 9 comprises a sewage drainage tank and a flushing water tank, wherein a water supplementing electromagnetic valve 12 and a water drainage electromagnetic valve 11 are arranged on the sewage drainage tank, and a cleaning pump 8 is arranged on the flushing water tank.
Specifically, in this embodiment, the first heat exchanger 21 and the second heat exchanger 23 in the ventilation air methane heat-extracting box 1 are made of stainless steel, red copper or anticorrosive hydrophilic aluminum foil.
In addition, in this embodiment, the number of the wellhead heaters may be one or more, and the number of the ventilation air methane heat-taking boxes may be more. In the aspect of the water source heat pump unit, because the heat load is reduced, the water source heat pump unit can be operated in parallel, and the number of the water source heat pump units which are put into operation is selected according to the change of the outdoor environment temperature, so that the operation cost of the heat pump equipment can be reduced, the operation time of the heat pump units is reduced, the energy consumption is reduced obviously, and the operation is reliable.
The working principle of the utility model is as follows: the ventilation air methane heating box is connected in series in a ventilation air methane pipeline of a coal mine, waste heat in ventilation air methane of the coal mine can be fully utilized through a condenser, secondary refrigerant in the condenser is heated, the heated secondary refrigerant is conveyed to an evaporator in a water source heat pump unit through a secondary refrigerant circulating pump to release heat and then returns to a heat exchanger in the ventilation air methane heating box, cold water in a wellhead heater enters the heat pump unit through a water circulating pump and is heated at the condenser end of the heat pump unit, then the heated water returns to a dividing wall type heat exchanger of the wellhead heater to heat fresh air, the cold water is conveyed to a wellhead under the action of an air feeder 33 and is mixed with outdoor fresh air, and the air inlet temperature is guaranteed to be higher than 2 ℃. In addition, the ventilation air heat-taking cleaning device is used as an auxiliary device of the ventilation air heat-taking box 1, clean water is used for cleaning the first heat exchanger 21 and the second heat exchanger 23 through the cleaning pump 8 by utilizing the spray row 22, and the ventilation air heat-taking box 9 is cleaned periodically; in the case where frosting occurs in the first heat exchanger 21 and the second heat exchanger 23, the hot water may be sprayed through the spray rows 22 to defrost.
The utility model discloses heat in can make full use of colliery ventilation air methane through regarding the ventilation air methane as the heat source, utilizes water source heat pump set, with the heat transport in the ventilation air methane to the technology hot-water aquatic, as the heat source of well head heater, the heating new trend has improved the frostproofing air heating system's of well head overall efficiency, and is energy-concerving and environment-protective, can replace coal fired boiler completely. The utility model discloses getting hot technique and low temperature heat pump technique, well head heater technique with the ventilation air methane and combining together organically, adopt clean energy to carry out coal fired boiler and replace, reduce environmental pollution, effectively utilize ventilation air methane waste heat resource, the system operation is simple reliable, can realize colliery energy saving and emission reduction, saves the working costs, avoids current ventilation air methane waste heat utilization system or the defect of heat pipe heat transfer technology system in service completely, and it is obvious to compare energy-conserving advantage with traditional well head mode of preventing frostbite.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (7)
1. A wellhead anti-freezing system based on coal mine ventilation air methane is characterized by comprising a ventilation air methane heat-taking box (1), a ventilation air methane heat-taking cleaning device (9), a first water source heat pump unit (2), a second water source heat pump unit (6) and a wellhead heater (3), wherein a first heat exchanger (21), a second heat exchanger (23) and a spray row (22) are arranged in the ventilation air methane heat-taking box (1); refrigerant is arranged in the first heat exchanger (21) and the second heat exchanger (23), the first heat exchanger (21) is communicated with an evaporator of the second water source heat pump unit (6) through a pipeline, and the second heat exchanger (23) is communicated with an evaporator of the first water source heat pump unit (2) through a pipeline; a first dividing wall type heat exchanger (31) and a second dividing wall type heat exchanger (32) which are used for performing double-stage heating on fresh air and a blower (33) which is used for sending the heated fresh air into a wellhead are arranged in the wellhead heater (3), hot water is arranged in the first dividing wall type heat exchanger (31) and the second dividing wall type heat exchanger (32), the first dividing wall type heat exchanger (31) is connected with a condenser end of the first water source heat pump unit (2) through a pipeline, and the second dividing wall type heat exchanger (32) is connected with a condenser end of the second water source heat pump unit (6) through a pipeline; the ventilation air methane heat-taking cleaning device (9) is connected with a spray row (22) through a pipeline, and the spray row (22) is over against the first heat exchanger (21) and the second heat exchanger (23).
2. The coal mine ventilation air methane-based wellhead anti-freezing system as claimed in claim 1, wherein a second secondary refrigerant circulating pump (10) is arranged on a pipeline between the second water source heat pump unit (6) and the first heat exchanger (21), and a first secondary refrigerant circulating pump (7) is arranged on a pipeline between the first water source heat pump unit (2) and the second heat exchanger (23).
3. The coal mine ventilation air methane-based wellhead anti-freezing system as claimed in claim 1, wherein a second hot water circulating pump (4) is arranged on a pipeline between the second water source heat pump unit (6) and the first dividing wall type heat exchanger (31), and a first hot water circulating pump (5) is arranged on a pipeline between the first water source heat pump unit (2) and the second hot water circulating pump (4).
4. The coal mine ventilation air methane-based wellhead anti-freezing system as claimed in claim 1, characterized in that a cleaning pump (8) is arranged on a pipeline between the ventilation air methane heat-taking cleaning device (9) and the spray row (22), and the cleaning pump (8) is used for sending the ventilation air methane heat-taking cleaning device (9) into the spray row (22) to clean or defrost the first heat exchanger (21) and the second heat exchanger (23).
5. The coal mine ventilation air methane-based wellhead anti-freezing system according to claim 1, characterized in that the ventilation air methane heat-extraction cleaning device (9) comprises a sewage drainage tank and a flushing water tank, wherein a water supplementing electromagnetic valve (12) and a water drainage electromagnetic valve (11) are arranged on the sewage drainage tank, and a cleaning pump (8) is arranged on the flushing water tank.
6. The coal mine ventilation air methane-based wellhead anti-freezing system as claimed in claim 1, wherein the first heat exchanger (21) and the second heat exchanger (23) are made of stainless steel or red copper or anticorrosive hydrophilic aluminum foil.
7. The coal mine ventilation air methane-based wellhead anti-freezing system according to claim 1, which is characterized by comprising a plurality of ventilation air methane heat-taking boxes (1) and a plurality of wellhead heaters (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920524561.XU CN210033528U (en) | 2019-04-18 | 2019-04-18 | Wellhead anti-freezing system based on coal mine ventilation air methane |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920524561.XU CN210033528U (en) | 2019-04-18 | 2019-04-18 | Wellhead anti-freezing system based on coal mine ventilation air methane |
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| CN210033528U true CN210033528U (en) | 2020-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920524561.XU Active CN210033528U (en) | 2019-04-18 | 2019-04-18 | Wellhead anti-freezing system based on coal mine ventilation air methane |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117073413A (en) * | 2023-10-16 | 2023-11-17 | 江苏纳奇机电设备工程有限公司 | Mine wind return air cascade heat-taking device utilizing waste heat of ventilation air |
-
2019
- 2019-04-18 CN CN201920524561.XU patent/CN210033528U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117073413A (en) * | 2023-10-16 | 2023-11-17 | 江苏纳奇机电设备工程有限公司 | Mine wind return air cascade heat-taking device utilizing waste heat of ventilation air |
| CN117073413B (en) * | 2023-10-16 | 2023-12-29 | 江苏纳奇机电设备工程有限公司 | Mine wind return air cascade heat-taking device utilizing waste heat of ventilation air |
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Address after: 030032 No.89, Tanghuai Road, Taiyuan Tanghuai Park, comprehensive reform demonstration zone, Taiyuan City, Shanxi Province Patentee after: Taizhong Xiangming Intelligent Equipment Co.,Ltd. Address before: 030000 No.89, Tanghuai Road, Taiyuan Tanghuai Park, Shanxi comprehensive reform demonstration zone, Taiyuan City, Shanxi Province Patentee before: TAIYUAN XIANGMING INTELLIGENT EQUIPMENT Co.,Ltd. |