CN210087387U - Mine well head system of preventing frostbite - Google Patents
Mine well head system of preventing frostbite Download PDFInfo
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- CN210087387U CN210087387U CN201920990606.2U CN201920990606U CN210087387U CN 210087387 U CN210087387 U CN 210087387U CN 201920990606 U CN201920990606 U CN 201920990606U CN 210087387 U CN210087387 U CN 210087387U
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- return air
- fresh air
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Abstract
The utility model discloses a mine well head anti-freezing system, which comprises a diffusion tower, a diffusion tower fan and a liquid storage tank, and also comprises a spraying device, a heat pump unit, a radiator and a heat pipe exchanger, wherein return air enters the diffusion tower through the diffusion tower fan, the top of the diffusion tower is communicated with the evaporation section of the heat pipe exchanger through a return air duct, the outlet of the heat pipe exchanger is communicated with the diffusion tower fan through a pipeline, and the outlet of the condensation section of the heat pipe exchanger is communicated with the radiator through a fresh air duct; the liquid storage tank is connected with the inlet of an evaporator of the heat pump unit through a solution pump, the outlet of the evaporator of the heat pump unit is connected with the radiator, and a condenser of the heat pump unit is connected with the radiator through a circulating water pump. The utility model discloses rationally distributed, effectively utilize the return air heat to solve under extreme weather, the frost-proof problem of well head that the return air heat is not enough to lead to has eliminated the problem that the heat pipe freezes under extreme weather.
Description
Technical Field
The utility model relates to a mine technical field that prevents frostbite especially relates to a mine well head anti-freezing system.
Background
At present, with the rapid development of economy, the demand of China for energy is greater and greater, coal is the main energy of China, and accounts for about 70% of the primary energy. Therefore, the safety production of the coal mine is very important, the freeze prevention of the wellhead is an important factor for the safety production of the coal mine in winter, the normal operation of production equipment can be influenced by the freezing of the wellhead, and serious accidents such as casualties and the like of underground workers can be caused with serious certainty. In the one hundred and zero regulations of coal mine safety regulations in China, the temperature below an air inlet wellhead must be more than 2 ℃. The heat preservation time of most coal mines in the north is longer, and extreme weather such as extremely low temperature is more frequent. Therefore, how to continuously and effectively ensure that the inlet air temperature of the wellhead meets the requirement is very important.
At present, most coal mines adopt a mode of generating steam to heat fresh air by using a coal-fired boiler, and the method has serious energy waste and great environmental pollution. With the national advocated green energy, coal-fired boilers are gradually banned. And the heat of return air is extracted by a heat pipe exchanger to heat fresh air in part of coal mines, while the return air temperature of some coal mines is lower and is only dozens of degrees or even a few degrees, and air leakage exists during heat exchange through heat pipes. In recent years, the extreme days of our country in winterThe air frequency is generated, when the outdoor fresh air temperature reaches minus ten and twenty degrees, the temperature is controlled by a formula QPut＝(ρ1qh1-ρ1hh2)(1-η)V1、QNeed to＝V2ρ2×Cp(t2h-t2q) The x α can be calculated, when the return air is lower than 10 ℃, the outdoor fresh air temperature reaches about minus 9 ℃, the problem of insufficient heat of the return air is caused, meanwhile, the working temperature of working media in the heat pipes is lower than zero, so that water separated out from the return air at the evaporation side of the heat pipes is frozen, and dust particles of the return air are attached, so that the heat exchange effect is greatly reduced, and the required fresh air temperature cannot be reached.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a mine well head anti-freezing system, when solving prior art and meetting winter extreme weather, the heat transfer effect greatly reduced of well head does not reach the new trend temperature of requirement, and then influences the problem of normal production.
In order to solve the technical problem, the utility model adopts the following technical scheme:
the utility model relates to a mine well head anti-freezing system, including diffusion tower, diffusion tower fan and hydraulic reservoir, the below of diffusion tower is provided with the catchment pond, the catchment pond is connected with hydraulic reservoir through the pipeline, still includes spray set, heat pump set, radiator and heat pipe exchanger, and the return air passes through the diffusion tower fan and gets into in the diffusion tower, the top of diffusion tower is connected with the return air wind channel, the other end of return air channel with heat pipe exchanger's evaporation zone intercommunication, heat pipe exchanger's evaporation zone import department installs the air return side fan, heat pipe exchanger's exit is through pipeline and external intercommunication; a fresh air side fan is arranged at the inlet of the condensation section of the heat pipe exchanger, the outlet of the condensation section of the heat pipe exchanger is communicated with one end of the radiator through a fresh air duct, and the other end of the radiator is placed at a fresh air inlet through a fresh air duct; the liquid storage tank is connected with an evaporator inlet of the heat pump unit through a solution pump, and an evaporator outlet of the heat pump unit is communicated with the spraying device through a pipeline; and a condenser of the heat pump unit is connected with the radiator through a circulating water pump to form a cycle.
Furthermore, a return air inlet temperature sensor is arranged at an inlet of an evaporation section of the heat pipe heat exchanger, and a return air outlet temperature sensor is arranged at an outlet of the heat pipe heat exchanger.
Furthermore, a fresh air inlet temperature sensor is arranged at an inlet of a condensation section of the heat pipe heat exchanger, and a fresh air inlet wellhead temperature sensor is arranged at a fresh air output end of the radiator.
Still further, the solution sprayed by the spraying device adopts a salt solution.
Compared with the prior art, the utility model discloses a beneficial technological effect:
the utility model discloses mine well head anti-freezing system, including diffusion tower, diffusion tower fan and hydraulic reservoir, the below of diffusion tower is provided with the catchment basin, and the catchment basin is connected with the hydraulic reservoir through the pipeline, still includes spray set, heat pump set, radiator and heat pipe exchanger; when the heat pipe heat exchanger works, return air enters the diffusion tower under the action of a fan of the diffusion tower, and enters an evaporation section of the heat pipe heat exchanger upwards under the action of a fan at the return air side to heat fresh air entering from a fan at the fresh air side for the first time after heat exchange through spraying; the sprayed salt solution enters a liquid storage tank through a solution pump, then the high-temperature salt solution enters the evaporation side of a heat pump unit through a pipeline, then enters a radiator to secondarily heat fresh air coming from a fresh air duct, the salt solution after heat release flows back to the condensation side of the heat pump unit under the action of a circulating water pump, and finally enters a spraying device to participate in the next spraying heat exchange cycle.
(1) The spraying solution is not water but a salt solution, so that the moisture absorption effect is obvious, the relative humidity of the return air is reduced to be very low after the return air is sprayed, and the wet working condition when the return air passes through the heat pipe exchanger and the icing condition that the wall surface of the heat pipe exchanger is lower than zero degree due to extreme weather are avoided;
(2) because the specific heat capacity of the salt solution is obviously smaller than that of water, the temperature rise of the sprayed salt solution is higher under the condition of absorbing the same heat of return air, so that the efficiency of a heat pump unit is increased;
(3) the return air is firstly heated once through the spraying system, and is subjected to primary heat exchange with fresh air through the heat pipe heat exchanger, so that the gradient utilization of energy is realized, and the problem of insufficient heat of the return air in extreme weather is solved through the action of the heat pump unit and the circulating water pump.
Drawings
The present invention will be further explained with reference to the following description of the drawings.
FIG. 1 is a front view of the anti-freezing system of the mine wellhead of the present invention;
description of reference numerals: 1. a diffusion tower; 11. a diffusion tower fan; 2. a spraying device; 3. a water collecting pool; 4. a liquid storage tank; 41. a solution pump; 5. a heat pump unit; 51. a water circulating pump; 6. a heat sink; 7. a heat pipe heat exchanger; 8. a fresh air duct; 81. a fresh air inlet temperature sensor; 82. a fresh air side fan; 83. fresh air enters a wellhead temperature sensor; 9. an air return duct; 91. a return air inlet temperature sensor; 92. a return air side fan; 93. return air outlet temperature sensor.
Detailed Description
As shown in fig. 1, the mine wellhead anti-freezing system comprises a diffusion tower 1, a diffusion tower fan 11 and a liquid storage tank 4, wherein a water collecting tank 3 is arranged below the diffusion tower 1, the water collecting tank 3 is connected with the liquid storage tank 4 through a pipeline, the mine wellhead anti-freezing system further comprises a spraying device 2, a heat pump unit 5, a radiator 6 and a heat pipe exchanger 7, return air enters the diffusion tower 1 through the diffusion tower fan 11, the top of the diffusion tower 1 is connected with a return air duct 9, the other end of the return air duct 9 is communicated with an evaporation section of the heat pipe exchanger 7, a return air side fan 92 is installed at an inlet of the evaporation section of the heat pipe exchanger 7, and an outlet of the heat pipe exchanger 7 is communicated with the outside through a pipeline; a fresh air side fan 82 is arranged at an inlet of a condensation section of the heat pipe exchanger 7, an outlet of the condensation section of the heat pipe exchanger 7 is communicated with one end of the radiator 6 through a fresh air duct 8, and the other end of the radiator 6 is placed at a fresh air inlet through the fresh air duct 8; the liquid storage tank 4 is connected with an evaporator inlet of the heat pump unit 5 through a solution pump 41, and an evaporator outlet of the heat pump unit 5 is communicated with the spraying device 2 through a pipeline; the condenser of the heat pump unit 5 is connected with the radiator 6 through a circulating water pump 51 to form a circulation. The solution that spray set 2 sprayed adopts the salt solution, and the moisture absorption effect of salt solution is obvious, and return air drops very low through spraying back relative humidity, has avoided the wet condition when passing through heat pipe exchanger to and because extreme weather heat pipe exchanger 7's wall is less than the freezing condition of zero degree.
Specifically, the first circulating system in the system is a complete salt solution circulating system consisting of the water collecting tank 3, the liquid storage tank 4, the solution pump 41, the evaporator side of the heat pump unit 5, the spraying device 2 and the diffusion tower 1, and the system realizes spraying heat exchange, solution regeneration, solution temperature rise, fresh air heat exchange and solution temperature reduction and returns to the spraying device to participate in spraying operation. The solution is driven by a solution pump 41 to flow back into the liquid storage tank 4 through a pipeline, the liquid storage tank 4 is an existing device, the concentration of the solution can be detected, after the concentration is reduced, corresponding solid salt can be added through a feed inlet to adjust the concentration, the temperature of the salt solution is reduced to 3 ℃ after heat exchange at the evaporator side of the heat pump unit 5, the salt solution enters the spraying device 2 again to participate in spraying operation, and the temperature is raised to about 6 ℃ after spraying.
The other system is a water circulation heat exchange system and comprises a condenser side of the heat pump unit 5, a circulating water pump 51 and the radiator 6 which are connected through pipelines to form a circulation; when the heat pump unit works, the evaporator of the heat pump unit releases heat, the condenser absorbs heat to achieve temperature rise of circulating water, the heated circulating water flows through the radiator 6 to achieve secondary temperature rise of fresh air, the fresh air after secondary temperature rise is input into a mine, and secondary utilization of waste heat in the diffusion tower is achieved.
The other system is a return air flowing system, return air in the diffusion tower 1 enters the return air duct 9 after being subjected to spray heat exchange, enters the evaporation section of the heat pipe heat exchanger 7 through a return air side fan 92, and is discharged into the air through a pipeline after being subjected to heat exchange; the primary heat exchange is realized during spraying, and then the secondary heat exchange is realized with fresh air during passing through the heat pipe exchanger, so that the gradient utilization of heat in return air is realized.
And the other system is a fresh air flowing system, fresh air enters a condensation section of the heat pipe heat exchanger 7 through a fresh air side fan 82, enters the radiator 6 through a fresh air duct 8 after being subjected to primary heat exchange and temperature rise with return air, is subjected to secondary temperature rise through heat exchange of circulating water, and finally enters a mine, so that secondary utilization of waste heat in the diffusion tower is realized. According to calculation, when the temperature of the return air is about 10 ℃ and the humidity is about 90%, the return air is sprayed and then is reduced to the temperature of 8 ℃ and the humidity is about 40%, the fresh air is heated to about 1 ℃ once through the heat pipe heat exchanger, the heat of the return air is extracted through spraying and is heated for a second time through the heat pump, and the requirement of well mouth anti-freezing at 2 ℃ can be met as long as the temperature of the fresh air is higher than about-33 ℃ through calculation. The inlet air temperature of the well mouth can be ensured by heating twice through the system, and the safety redundancy is higher than the 2 ℃ ensured temperature of the traditional system.
An inlet of an evaporation section of the heat pipe heat exchanger 7 is provided with a return air inlet temperature sensor 91, and an outlet of the heat pipe heat exchanger 7 is provided with a return air outlet temperature sensor 93. A fresh air inlet temperature sensor 81 is arranged at an inlet of a condensation section of the heat pipe heat exchanger 7, and a fresh air inlet wellhead temperature sensor 83 is arranged at a fresh air output end of the radiator 6. The heat pump unit 5 and the heat pipe exchanger 7 heat the return air in sequence and release heat in the reverse sequence of the fresh air. The heat pump unit 5 can be manually opened or closed along with the change of the temperatures of return air and fresh air.
The working process of the utility model is as follows:
when the heat pipe heat exchanger works, the total return air in a mine enters the diffusion tower 1 under the action of the diffusion tower fan 11, the return air after primary cooling flows upwards to enter the evaporation section of the heat pipe heat exchanger 7 under the action of the return air side fan 92 after salt solution is sprayed and heat exchanged through the spraying device 2, and the fresh air entering from the fresh air side fan 82 is heated in the heat pipe heat exchanger 7 for the first time; the sprayed salt solution is heated after heat exchange, enters the liquid storage tank 4 through the solution pump 41, then enters the evaporation side of the heat pump unit 5 through a pipeline, emits heat at the evaporation side and then flows back to the spraying device 2 to participate in the next spraying heat exchange cycle; the condenser side of the heat pump unit 5 is communicated with the radiator 6 to realize heat exchange of water circulation, and secondary heating is carried out on fresh air from the fresh air duct 8. A fresh air inlet temperature sensor 81 is arranged at the initial inlet of the fresh air duct 8, a fresh air inlet temperature sensor 83 is arranged at the fresh air outlet, and the initial fresh air temperature and the fresh air temperature after twice heating can be timely monitored; the return air inlet temperature sensor 91 and the return air outlet temperature sensor 93 are arranged on the return air duct, so that the initial temperature of the return air and the temperature of the return air after cooling can be timely monitored. Through this mine well head system of preventing frostbite, can not only rational utilization return air heat, solved under extreme weather, the not enough problem that can not satisfy the frostproofing demand of well head that leads to of return air heat, under extreme weather, solved the problem that the heat pipe freezes moreover.
In addition, theoretically, when new trend income well head temperature sensor 83 was less than 2 ℃, it is not enough to show the heat transfer volume this moment, can not satisfy the well head requirement of preventing frostbite, need open heat pump set 5 to can adjust the water yield that sprays according to new trend temperature, the lower water yield that sprays of new trend wind temperature is big, keeps the new trend to go into the well head temperature to maintain more than 2 ℃ all the time. The fresh air inlet temperature sensor 81 mainly detects the environment temperature, the fresh air inlet temperature sensor 83 detects the temperature of the fresh air inlet to the wellhead, whether the temperature meets the requirement of being more than 2 ℃, the return air inlet temperature sensor 91 and the return air outlet temperature sensor 93 respectively detect the return air temperature after spraying and heat pipe heat exchange, and the heat taking amount of twice heat taking is calculated. This data through processing the temperature and humidity detection device collection of placing at each wind gap is calculated out by the formula and whether single heat pipe heat exchanger system can reach the well head and prevent frostbite the demand, and the heat pipe can not produce and freeze. If the requirement is met, the operation of the heat pump unit 5 can be stopped, and energy waste is avoided. Therefore, the whole system realizes the full utilization of the return air energy.
The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and those skilled in the art should also be able to make various modifications and improvements to the technical solution of the present invention without departing from the spirit of the present invention, and all such modifications and improvements are intended to fall within the scope of the present invention as defined in the appended claims.
Claims (4)
1. The utility model provides a mine well head system of preventing frostbite, includes diffuser tower (1), diffuser tower fan (11) and reservoir (4), the below of diffuser tower (1) is provided with catchment pond (3), catchment pond (3) are connected its characterized in that through pipeline and reservoir (4): the heat pump unit is characterized by further comprising a spraying device (2), a heat pump unit (5), a radiator (6) and a heat pipe exchanger (7), return air enters the diffusion tower (1) through a diffusion tower fan (11), the top of the diffusion tower (1) is connected with a return air duct (9), the other end of the return air duct (9) is communicated with an evaporation section of the heat pipe exchanger (7), a return air side fan (92) is installed at an inlet of the evaporation section of the heat pipe exchanger (7), and an outlet of the heat pipe exchanger (7) is communicated with the outside through a pipeline; a fresh air side fan (82) is arranged at the inlet of the condensation section of the heat pipe heat exchanger (7), the outlet of the condensation section of the heat pipe heat exchanger (7) is communicated with one end of the radiator (6) through a fresh air duct (8), and the other end of the radiator (6) is placed at a fresh air inlet through the fresh air duct (8); the liquid storage tank (4) is connected with an evaporator inlet of the heat pump unit (5) through a solution pump (41), and an evaporator outlet of the heat pump unit (5) is communicated with the spraying device (2) through a pipeline; the condenser of the heat pump unit (5) is connected with the radiator (6) through a circulating water pump (51) to form a circulation.
2. The mine wellhead freeze protection system of claim 1, wherein: and an inlet of an evaporation section of the heat pipe heat exchanger (7) is provided with a return air inlet temperature sensor (91), and an outlet of the heat pipe heat exchanger (7) is provided with a return air outlet temperature sensor (93).
3. The mine wellhead freeze protection system of claim 1, wherein: a fresh air inlet temperature sensor (81) is arranged at an inlet of a condensation section of the heat pipe heat exchanger (7), and a fresh air inlet wellhead temperature sensor (83) is arranged at a fresh air output end of the radiator (6).
4. The mine wellhead freeze protection system of claim 1, wherein: the solution sprayed by the spraying device (2) adopts saline solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920990606.2U CN210087387U (en) | 2019-06-28 | 2019-06-28 | Mine well head system of preventing frostbite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920990606.2U CN210087387U (en) | 2019-06-28 | 2019-06-28 | Mine well head system of preventing frostbite |
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| Publication Number | Publication Date |
|---|---|
| CN210087387U true CN210087387U (en) | 2020-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920990606.2U Expired - Fee Related CN210087387U (en) | 2019-06-28 | 2019-06-28 | Mine well head system of preventing frostbite |
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| CN (1) | CN210087387U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111622799A (en) * | 2020-06-05 | 2020-09-04 | 山西文龙中美环能科技股份有限公司 | Underground cooling and wellhead anti-freezing system based on split heat pipe and heat pump |
| CN114322370A (en) * | 2021-12-23 | 2022-04-12 | 佩高电子电器(德国)技术有限公司 | Heating system utilizing mine ventilation air energy heat pump |
-
2019
- 2019-06-28 CN CN201920990606.2U patent/CN210087387U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111622799A (en) * | 2020-06-05 | 2020-09-04 | 山西文龙中美环能科技股份有限公司 | Underground cooling and wellhead anti-freezing system based on split heat pipe and heat pump |
| CN114322370A (en) * | 2021-12-23 | 2022-04-12 | 佩高电子电器(德国)技术有限公司 | Heating system utilizing mine ventilation air energy heat pump |
| CN114322370B (en) * | 2021-12-23 | 2024-03-19 | 佩高电子电器(德国)技术有限公司 | Heat pump heating system utilizing ventilation air methane of mine |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200218 Termination date: 20200628 |
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| CF01 | Termination of patent right due to non-payment of annual fee |