CN211503240U - Direct-expansion type shaft anti-freezing heating device - Google Patents
Direct-expansion type shaft anti-freezing heating device Download PDFInfo
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- CN211503240U CN211503240U CN201921906928.0U CN201921906928U CN211503240U CN 211503240 U CN211503240 U CN 211503240U CN 201921906928 U CN201921906928 U CN 201921906928U CN 211503240 U CN211503240 U CN 211503240U
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Abstract
The utility model discloses a direct expansion type shaft anti-freezing heating device, which is applied to the technical field of mine energy-saving modification and comprises an evaporator arranged at a mine air outlet, a condenser arranged at a mine air supply outlet and a pipeline for connecting the evaporator and the condenser, wherein a medium in the evaporator is connected with the condenser through the pipeline provided with a compressor, the medium in the condenser is connected with the evaporator through the pipeline provided with a throttle valve, and the evaporator, the compressor, the condenser and the throttle valve which are connected mutually form a module unit; the utility model discloses rely on the phase transition of refrigerant to realize that the heat is aired exhaust the side by the mine and is shifted to mine air supply side, the medium flow is little, and heat exchange efficiency is high, and can be according to the parameter adjustment modular unit that mine air supply and mine were aired exhaust open stop, the capacity size of module unit, the heater open stop etc. be convenient for regulation and control, have the necessity of popularization.
Description
Technical Field
The utility model relates to a mine energy-saving transformation field, specific formula pit shaft heating device that prevents frostbite that directly expands that says so.
Background
In order to ensure the safe production in the well, air needs to be continuously introduced into the well. The one hundred thirty seven provisions of the coal mine safety regulations stipulate that the air temperature below the air supply port of the mine must be above 2 ℃. Under the condition of low outdoor temperature in winter, outdoor air needs to be heated and can be sent into the well after the requirement is met.
In the process of coal mine production, under the influence of various factors, a large amount of heat can be generated underground, the temperature of mine exhaust air is about 17-22 ℃, the relative humidity generally floats up and down at 90%, and the annual air volume is constant, so that abundant low-temperature heat energy is stored in the mine exhaust air.
At present, a part of mines adopt a mode of combining mine exhaust air spray heat extraction and a water source heat pump to prepare high-temperature hot water to heat mine air supply, the scheme can well utilize mine exhaust air waste heat, electric energy of 1kWh is consumed to generate heat energy of 4kWh, energy-saving benefit is obvious, but some dust or corrosive substances in mine exhaust air can directly enter spray water, and the heat pump and a pipeline are corroded or blocked.
Later, people adopt the dividing wall type heat exchanger to get the heat technology and the water source heat pump combines together, can well utilize the mine waste heat of airing exhaust, consume 1 kWh's electric energy can produce 3.5 kWh's heat energy, and energy-conserving benefit is obvious, has also solved the problem that dust or corrosive substance in the mine air exhaust directly gets into in heat pump or the pipeline simultaneously. However, in the implementation of the solution, the prepared high-temperature hot water needs to be conveyed to the mine air supply outlet, which causes heat loss in the conveying process and consumes a large amount of energy by the water pump.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that needs to solve provides a formula pit shaft heating device that prevents frostbite that directly expands, its phase transition that relies on the refrigerant medium is aired exhaust with the mine waste heat transfer to the mine supply-air outlet and is used for heating the mine air supply, and the system becomes simple, and efficiency promotes.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:
the utility model discloses an including setting up evaporimeter, the condenser of setting in mine air supply vent department and the connection in mine air vent department the pipeline of evaporimeter and condenser, medium in the evaporimeter is connected with the condenser through the pipeline that is equipped with the compressor, medium in the condenser is connected with the evaporimeter through the pipeline that is equipped with the choke valve, and interconnect's evaporimeter, compressor, condenser and choke valve form a modular unit jointly.
The utility model discloses a further improvement lies in: the module units are more than two and are arranged in sequence.
The utility model discloses a further improvement lies in: the number of the module units is four, the evaporators comprise two rows of first evaporators, two rows of second evaporators, three rows of third evaporators and four rows of fourth evaporators, the condensers comprise two rows of first condensers, two rows of second condensers, three condensers and four condensers, media in the first evaporators are connected with the first condensers through pipelines provided with first compressors, and the media in the first condensers are connected with the first evaporators through pipelines provided with first throttle valves; the medium in the second evaporator is connected with a second condenser through a pipeline provided with a second compressor, and the medium in the second condenser is connected with the second evaporator through a pipeline provided with a second throttling valve; the medium in the third evaporator is connected with a third condenser through a pipeline provided with a third compressor, and the medium in the third condenser is connected with the third evaporator through a pipeline provided with a third throttle valve; and a medium in the fourth evaporator is connected with a fourth condenser through a pipeline provided with a fourth compressor, and the medium in the fourth condenser is connected with the fourth evaporator through a pipeline provided with a fourth throttling valve.
The utility model discloses a further improvement lies in: an air duct is arranged at the air outlet of the mine, an air plug is arranged at the top end of the air duct, and an air inlet valve is arranged on one side of the air duct.
The utility model discloses a further improvement lies in: and an evaporator is arranged at the corresponding position of the air inlet valve.
The utility model discloses a further improvement lies in: and an air blower is arranged between the air inlet valve and the evaporator.
The utility model discloses a further improvement lies in: and a temperature measuring device is arranged at the air supply port of the mine.
The utility model discloses a further improvement lies in: and a heater is arranged between the temperature measuring device and the condenser.
The utility model discloses a further improvement lies in: and an air blower blowing to the condenser is arranged on the heating side of the mine air supply outlet.
The utility model discloses a further improvement lies in: the medium is R134 a.
Since the technical scheme is used, the utility model discloses the beneficial effect who gains is:
the utility model discloses compact structure, modern design, unique, the phase transition that relies on the refrigerant realizes that the heat is aired exhaust by the mine and the side shifts to the mine side of sending wind, and medium flow is little, and heat exchange efficiency is high. In the implementation process, the start and stop of the module unit, the capacity of the module unit, the start and stop of the heater and the like can be adjusted according to the mine air supply and mine air exhaust parameters, so that the adjustment and the control are convenient.
Compared with the traditional dividing wall type heat exchanger, the whole device reduces two heat exchange processes, saves two sets of circulating water pumps, greatly improves the efficiency and has the need of vigorous popularization.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Wherein, 1, wind blocking; 2. an air duct; 3. an air inlet valve; 4. a blower; 5-1, a first evaporator; 5-2, a second evaporator; 5-3, a third evaporator; 5-4, a fourth evaporator; 6-1, a first throttle valve; 6-2, a second throttle valve; 6-3, a third throttle valve; 6-4, a fourth throttle valve; 7-1, a first condenser; 7-2, a second condenser; 7-3, a third condenser; 7-4, a fourth condenser; 8-1, a first compressor; 8-2, a second compressor; 8-3, a third compressor; 8-4, a fourth compressor; 9. a mine air supply outlet; 10. a temperature measuring device; 11. a heater.
Detailed Description
The present invention will be described in further detail with reference to the following examples:
a direct-expansion type shaft anti-freezing heating device is shown in figure 1 and comprises an evaporator arranged at a mine air outlet, a condenser arranged at a mine air supply outlet 9 and a pipeline connected with the evaporator and the condenser, wherein a medium in the evaporator is connected with the condenser through the pipeline provided with a compressor, the medium in the condenser is connected with the evaporator through the pipeline provided with a throttle valve, and the medium in the pipeline is an environment-friendly working medium R134 a. The pipeline is made of anticorrosive stainless steel 316L, the size of the pipeline is determined according to the heat transfer capacity of each unit, if the heat loss is neglected, the theoretical energy efficiency ratio of the system reaches 6.8, and considering that the efficiency of the compressor is 0.8, the energy efficiency ratio of the system can still reach about 5.5. In order to prevent the evaporator from being frozen, the evaporation temperature of the heat pump cycle is about 0 ℃, the condensation temperature of the condenser side is about 40 ℃, the pipeline is insulated by 3cm rubber plastic cotton, and the outer protective layer is made of 0.3mm aluminum foil.
The evaporator, the compressor, the condenser and the throttle valve which are connected with each other form a module unit together, the low-temperature low-pressure liquid medium R134a in the evaporator absorbs the waste heat of mine exhaust air at the temperature of 17-22 ℃ and then is changed into low-temperature low-pressure gas state to enter the compressor, the low-temperature low-pressure gas state is changed into high-temperature high-pressure gas state after being compressed by the compressor, the high-temperature high-pressure gas refrigerant releases heat in the condenser, and the mine air supply. The high-temperature high-pressure gas refrigerant emits heat and then becomes a high-temperature high-pressure liquid, the high-temperature high-pressure gas refrigerant is changed into a low-temperature low-pressure gas through the throttle valve and enters the evaporator, the heat is absorbed in the evaporator and is changed into a low-temperature low-pressure gas, the circulation is repeated, and the waste heat of the mine exhaust air is continuously transferred to the mine air supply by utilizing the phase change of the medium R134 a.
As shown in fig. 1, the module units are two or more arranged in sequence. Four module units are taken as an example for detailed description: the evaporators are arranged in two rows and two columns, one side close to the air exhaust outlet is called a high-temperature side, and the other side far away is called a low-temperature side; at the heating side of the mine air supply well, the condensers are arranged in two rows and two columns, one side close to the mine air supply outlet 9 is a high-temperature side, the other side far away is a low-temperature side, the high-temperature side evaporator is connected with the high-temperature side condenser during pipeline connection, and the low-temperature side evaporator is connected with the low-temperature side condenser, so that the regulation and control are convenient, and the whole system can keep high-efficiency operation.
The evaporator comprises two rows of first evaporators 5-1, second evaporators 5-2, third evaporators 5-3 and fourth evaporators 5-4 which are arranged in two rows, the condensers comprise two rows of first condensers 7-1, second condensers 7-2, third condensers 7-3 and fourth condensers 7-4 which are arranged in two rows, a medium in the first evaporator 5-1 is connected with the first condenser 7-1 through a pipeline provided with a first compressor 8-1, and a medium in the first condenser 7-1 is connected with the first evaporator 5-1 through a pipeline provided with a first throttle valve 6-1; the medium in the second evaporator 5-2 is connected with a second condenser 7-2 through a pipeline provided with a second compressor 8-2, and the medium in the second condenser 7-2 is connected with the second evaporator 5-2 through a pipeline provided with a second throttle valve 6-2; the medium in the third evaporator 5-3 is connected with a third condenser 7-3 through a pipeline provided with a third compressor 8-3, and the medium in the third condenser 7-3 is connected with the third evaporator 5-3 through a pipeline provided with a third throttle valve 6-3; the medium in the fourth evaporator 5-4 is connected with a fourth condenser 7-4 through a pipeline provided with a fourth compressor 8-4, and the medium in the fourth condenser 7-4 is connected with the fourth evaporator 5-4 through a pipeline provided with a fourth throttle valve 6-4.
And a temperature measuring device 10 is arranged at the mine air supply outlet 9, and a heater 11 is arranged between the temperature measuring device 10 and the condenser. Firstly, under extreme weather conditions, when the waste heat of mine exhaust air cannot meet the requirement of wellhead anti-freezing, the module unit set is fully started to operate at full load, and when the temperature of an air inlet wellhead cannot meet the requirement, the electric heating is required to be started to adjust the air inlet temperature; and secondly, energy-saving adjustment is performed when mine exhaust waste heat energy meets the requirement of well head anti-freezing, and the system control and adjustment system comprises adjustment of the number of the module unit units and adjustment of the capacity of the unit units. The unit adjustment is controlled according to the starting and stopping of the module unit, and the unit capacity can adjust the power of the unit to meet the requirements.
Specifically, when the waste heat of the mine exhaust air meets the requirement of wellhead anti-freezing, namely the temperature of the mine air supply outlet 9 is higher than 5 ℃, the system starts to control and regulate. The main expression form of the regulation control process is the starting and stopping of the modular unit set. Firstly, a unit capacity adjusting mode is adopted, the module unit comprises two stages of heat exchangers, the lower working temperature of the external low-temperature heat exchanger and the fact that mine exhaust air can uniformly pass through all the heat exchangers in the air duct are considered, and when the mine exhaust air is closed, the outermost heat exchanger is closed from outside to inside. And when the heat of all the heat exchange equipment at the outermost side is still abundant, adopting the number adjustment to stop the modular unit from outside to inside.
The device for heating mine air supply by utilizing mine exhaust air is only used in winter, does not operate in most of the whole year, and if the evaporator is directly arranged right above the mine air outlet, the air exhaust resistance is increased, and the energy consumption of the air blower 4 is increased. A section of air duct 2 is upwards connected with an air outlet of a raw mine, a hydraulic control air plug 1 is additionally arranged at the top of the air duct 2, an opening at one side connected with the air outlet duct 2 is used as an air outlet, and an air inlet valve 3 is arranged at the air outlet of the air outlet.
The evaporator is arranged at an air outlet of the air exhaust, the blown air exchanges heat with the evaporator, when the device runs in winter, the air plug 1 at the top of the air duct 2 is closed, the air inlet valve 3 is opened, and the mine exhaust is blown out from the air outlet of the air exhaust on the side surface; the air plug 1 on the top of the air receiving channel 2 is opened in non-heating seasons, the air inlet valve 3 is closed, and exhaust air is directly blown out without passing through an evaporator, so that the air resistance is reduced, and the energy consumption of the air blower 4 is reduced.
And an air blower 4 is arranged between the air inlet valve 3 and the evaporator. The air blower 4 can uniformly blow the exhaust air at the air exhaust side of the mine to the evaporator, so that the heat exchange efficiency is greatly improved; on the heating side of the mine air supply well, in order to ensure the uniformity of air supply and heating, a plurality of air blowers 4 are uniformly arranged on the front side of the condenser, and hot air generated by the condenser 4 is directly blown to the mine air supply outlet 9.
Finally, it should be noted that: the above examples are given for the sake of clarity and are not intended to be exclusive, nor are they intended to limit the scope of the invention. It will be apparent to those skilled in the art that many more modifications and variations than mentioned above are possible in light of the above teaching, and it is not intended to be exhaustive or to limit the invention to the precise form disclosed.
Claims (10)
1. The utility model provides a formula pit shaft heating device that prevents frostbite that directly expands which characterized in that: the mine air conditioner comprises an evaporator arranged at a mine air outlet, a condenser arranged at a mine air supply outlet (9) and a pipeline connected with the evaporator and the condenser, wherein a medium in the evaporator is connected with the condenser through the pipeline provided with a compressor, the medium in the condenser is connected with the evaporator through the pipeline provided with a throttle valve, and the evaporator, the compressor, the condenser and the throttle valve which are connected mutually form a module unit together.
2. The direct-expansion wellbore anti-freezing heating device as claimed in claim 1, wherein: the module units are more than two and are arranged in sequence.
3. The direct-expansion wellbore anti-freezing heating device as claimed in claim 2, wherein: the number of the module units is four, the evaporators comprise two rows of first evaporators (5-1), two rows of second evaporators (5-2), three rows of third evaporators (5-3) and two rows of fourth evaporators (5-4), the condensers comprise two rows of first condensers (7-1), two rows of second condensers (7-2), three condensers (7-3) and four condensers (7-4), media in the first evaporators (5-1) are connected with the first condensers (7-1) through pipelines provided with first compressors (8-1), and media in the first condensers (7-1) are connected with the first evaporators (5-1) through pipelines provided with first throttle valves (6-1); the medium in the second evaporator (5-2) is connected with a second condenser (7-2) through a pipeline provided with a second compressor (8-2), and the medium in the second condenser (7-2) is connected with the second evaporator (5-2) through a pipeline provided with a second throttle valve (6-2); the medium in the third evaporator (5-3) is connected with a third condenser (7-3) through a pipeline provided with a third compressor (8-3), and the medium in the third condenser (7-3) is connected with the third evaporator (5-3) through a pipeline provided with a third throttle valve (6-3); the medium in the fourth evaporator (5-4) is connected with a fourth condenser (7-4) through a pipeline provided with a fourth compressor (8-4), and the medium in the fourth condenser (7-4) is connected with the fourth evaporator (5-4) through a pipeline provided with a fourth throttle valve (6-4).
4. The direct-expansion wellbore anti-freezing heating device as claimed in claim 1, wherein: an air duct (2) is arranged at the air outlet of the mine, an air plug (1) is arranged at the top end of the air duct (2), and an air inlet valve (3) is arranged on one side of the air duct (2).
5. The direct-expansion wellbore anti-freezing heating device as claimed in claim 4, wherein: an evaporator is arranged at the corresponding position of the air inlet valve (3).
6. The direct-expansion wellbore anti-freezing heating device as claimed in claim 5, wherein: and an air blower (4) is arranged between the air inlet valve (3) and the evaporator.
7. The direct-expansion wellbore anti-freezing heating device as claimed in claim 1, wherein: and a temperature measuring device (10) is arranged at the mine air supply outlet (9).
8. The direct-expansion wellbore anti-freezing heating device as claimed in claim 7, wherein: and a heater (11) is arranged between the temperature measuring device (10) and the condenser.
9. The direct-expansion wellbore anti-freezing heating device as claimed in claim 7, wherein: and an air blower (4) blowing to the condenser is arranged on the heating side of the mine air supply outlet (9).
10. The direct-expansion wellbore anti-freezing heating device according to any one of claims 1-9, wherein: the medium is R134 a.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921906928.0U CN211503240U (en) | 2019-11-07 | 2019-11-07 | Direct-expansion type shaft anti-freezing heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921906928.0U CN211503240U (en) | 2019-11-07 | 2019-11-07 | Direct-expansion type shaft anti-freezing heating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211503240U true CN211503240U (en) | 2020-09-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921906928.0U Expired - Fee Related CN211503240U (en) | 2019-11-07 | 2019-11-07 | Direct-expansion type shaft anti-freezing heating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211503240U (en) |
-
2019
- 2019-11-07 CN CN201921906928.0U patent/CN211503240U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200915 Termination date: 20211107 |
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| CF01 | Termination of patent right due to non-payment of annual fee |