CN103277312A - Novel screw air compressor - Google Patents
Novel screw air compressor Download PDFInfo
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- CN103277312A CN103277312A CN2013102532766A CN201310253276A CN103277312A CN 103277312 A CN103277312 A CN 103277312A CN 2013102532766 A CN2013102532766 A CN 2013102532766A CN 201310253276 A CN201310253276 A CN 201310253276A CN 103277312 A CN103277312 A CN 103277312A
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Abstract
The invention discloses a novel screw air compressor. An oil air heat exchanger is arranged in a sound-proof shield of a screw air compressor for a coal mine, and is equipment performing heat exchange between lubricating oil and dried compressed gas; the novel screw air compressor can utilize compressed heat energy generated by the air compressor to perform the heat exchange on air; wasted energy sources are fully used; and the procurement cost and the electrical energy consumption of electrical heater equipment are saved.
Description
Technical field
The present invention relates to the electrical equipment technical field, relate in particular to a kind of new screw air compressor.
Background technique
At present, the colliery is the explosion-proof air feed equipment of developing according to environmental conditions under the coal mine with screw air compressor, provides compressed gas source etc. as driving under the coal mine, bolt-spary supports, for nitrogen generator equipment.The colliery is that airborne nitrogen separation is come out with nitrogen generator, enter after the knock out drum, annotate the nitrogen pipeline by the down-hole and be input to working surface goaf or fire district at last, after nitrogen enters the goaf, can cover the goaf rapidly, utilize nitrogen to reduce oxygen content, make the goaf form asphyxiant gas, thereby reach the purpose of anti-extinguish and anti-explosion.And the compressed air temperature that offers nitrogen generator generally requires at 50-55 ℃, to improve nitrogen output to greatest extent.
In the prior art scheme, the pressurized air heating means that the colliery industry is used are to adopt the pattern of coal mine explosion-proof electric heater, yet in the today of being becoming tight world energy sources day, energy-conservation and energy reclaims problem and is paid attention to by every profession and trade, prior art adopts the pattern of electric heater not only to waste the energy, increase electric consumption, simultaneously also increased the discharge amount of carbon dioxide, sulfur dioxide.
Summary of the invention
The purpose of this invention is to provide a kind of new screw air compressor, the compression heat energy that can utilize air compressor to produce carries out heat exchange to air, not only take full advantage of the energy that is wasted, but also saved purchase cost and the power consumption of electric heater equipment.
The objective of the invention is to be achieved through the following technical solutions, a kind of new screw air compressor,
With the inside of screw air compressor sound-insulating cover oily empty heat exchanger is set in the colliery, the empty heat exchanger of described oil is the equipment that utilizes lubricant oil and carry out heat exchange between the pressurized gas of super-dry, specifically comprises:
After air enters into pressing chamber through described colliery with the suction port of screw air compressor, in the process of air-breathing, compression, exhaust, produce a large amount of heat of compression, and in the compressed process of gas, the lubricant oil that the empty heat exchanger of described oil is discharged is injected to described pressing chamber to be mixed with gas, described lubricant oil absorbs a large amount of heat of compression, and together discharges described pressing chamber with pressurized gas;
The gas mixture of high temperature enters into barrel of oil and gas by the body relief opening, through rotation and deaerator make Oil-gas Separation at a high speed, gas after the separation is kept valve through excess pressure and is entered after cooler and cool off, finally discharge described colliery screw air compressor with≤40 ℃ temperature, and carry out the dry and secondary filter processing of dewatering of next step;
Under the lubricant oil liquid level of described barrel of oil and gas, get the feed cover that an oil circuit is connected to the empty heat exchanger of described oil, copper die groupings by the empty heat exchanger of described oil inside, with carry out heat exchange through the pressurized gas that enters the empty heat exchanger shell of described oil inside that dewaters after the filtration treatment, heat described pressurized gas, after having reached predefined temperature, discharge the empty heat exchanger of described oil through the pressurized gas of heat exchange and enter nitrogen generator.
The shell of the empty heat exchanger of described oil is made by seamless steel pipe, and inside is the heat exchange core group that the copper pipe of several proper alignment is formed.
The two ends of the empty heat exchanger staving of described oil are equipped with feed cover and oil return lid, communicate with the heat exchange core group of inside, and separate by the air chamber of seal ring and shell.
The lubricant oil that the empty heat exchanger of described oil is discharged with enter oil cooler after the high temperature grease of described barrel of oil and gas mixes and cool off, being injected to described pressing chamber after the filtration again mixes with gas and is lubricated cooling, so go round and begin again and circulate, constantly cooled pressurized gas is heated, and offer nitrogen generator.
As seen from the above technical solution provided by the invention, with the inside of screw air compressor sound-insulating cover oily empty heat exchanger is set in the colliery, the empty heat exchanger of described oil is the equipment that utilizes lubricant oil and carry out heat exchange between the pressurized gas of super-dry, the compression heat energy that this new screw air compressor can utilize air compressor to produce carries out heat exchange to air, not only take full advantage of the energy that is wasted, but also saved purchase cost and the power consumption of electric heater equipment.
Description of drawings
In order to be illustrated more clearly in the technological scheme of the embodiment of the invention, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite of not paying creative work, can also obtain other accompanying drawings according to these accompanying drawings.
The structural representation of the new screw air compressor that Fig. 1 provides for the embodiment of the invention;
Fig. 2 adopts the system schematic of high temperature grease heating for pressurized gas that the embodiment of the invention gives an actual example.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technological scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiments.Based on embodiments of the invention, those of ordinary skills belong to protection scope of the present invention not making the every other embodiment who obtains under the creative work prerequisite.
The exhaust end base of oil injection threaded bolt air compressor produces a large amount of heat of compression in the pressurized air process, these heat energy are dispersed in the atmosphere or the water that is cooled is taken away, and are not well utilized; And the gas that offers nitrogen generator (film separation and nitrogen-making) also needs to use an independent cover electric heater to heat, and this has increased manufacture cost and waste electric energy virtually.The empty heat exchanger of the described oil of the embodiment of the invention is exactly to utilize between the heat of compression that helical-lobe compressor produces in the course of the work and the nitrogen generator source of the gas (pressurized air) to carry out heat exchange, compressed air temperature is raise, satisfy the technological requirement of nitrogen generator, not only take full advantage of the energy that is wasted, but also saved purchase cost and the power consumption of electric heater equipment.The embodiment of the invention is described in further detail the structural representation of the new screw air compressor that Fig. 1 provides for the embodiment of the invention below in conjunction with accompanying drawing:
New screw air compressor among Fig. 1 is provided with oily empty heat exchanger in traditional colliery with the inside of screw air compressor sound-insulating cover, the empty heat exchanger of described oil is the equipment that utilizes lubricant oil and carry out heat exchange between the pressurized gas of super-dry, and the concrete working procedure of the empty heat exchanger of this oil is:
After air enters into pressing chamber through described colliery with the suction port of screw air compressor, air-breathing, compression, in the process of exhaust, produce a large amount of heat of compression, and in the compressed process of gas, the lubricant oil that the empty heat exchanger of described oil is discharged is injected to described pressing chamber to be mixed with gas, described lubricant oil absorbs a large amount of heat of compression, and together discharge described pressing chamber with pressurized gas, the lubricant oil here not only can play lubricated, sealing, the effect of noise reduction, the more important thing is that lubricant oil can absorb a large amount of heat of compression, protecting rotor and body fuselage can also can not make head control in the knot carbon of general lubricant oil and the cooling action below the degradation temperatures because high temperature expands outside the locking;
The gas mixture of high temperature enters into barrel of oil and gas by the body relief opening, through rotation and deaerator make Oil-gas Separation at a high speed, gas after the separation is kept valve through excess pressure and is entered after cooler and cool off, finally discharge described colliery screw air compressor with≤40 ℃ temperature, and carry out the dry and secondary filter processing of dewatering of next step, the temperature in the above-mentioned air compressor oil-gas barrel is generally about 80 ℃～90 ℃;
Under the lubricant oil liquid level of described barrel of oil and gas, get the feed cover that an oil circuit is connected to the empty heat exchanger of described oil, copper die groupings by the empty heat exchanger of described oil inside, with carry out heat exchange through the pressurized gas that enters the empty heat exchanger shell of described oil inside (temperature is about 30 ℃) that dewaters after the filtration treatment, heat described pressurized gas, after having reached predefined temperature (being generally 50-55 ℃), discharge the empty heat exchanger of described oil through the pressurized gas of heat exchange and enter nitrogen generator.
In specific implementation, the lubricant oil that the empty heat exchanger of described oil is discharged can also with enter oil cooler after the high temperature grease of described barrel of oil and gas mixes and cool off, being injected to described pressing chamber after the filtration again mixes with gas and is lubricated cooling, so go round and begin again and circulate, constantly cooled pressurized gas is heated, and offer nitrogen generator, thus can recycle lubricant oil, further save the energy.
In the specific implementation process, a kind of structure of the empty heat exchanger of above-mentioned oil can for: shell is made by seamless steel pipe, and inside is the heat exchange core group that the copper pipe of several proper alignment is formed; And the two ends of oily empty heat exchanger staving are equipped with feed cover and oil return lid, communicate with the heat exchange core group of inside, and separate by the air chamber of seal ring and shell.
Describe with concrete example below, be illustrated in figure 2 as the system schematic that pressurized gas that the embodiment of the invention gives an actual example adopts the high temperature grease heating, it is the screw air compressor of a power of motor 185kW among Fig. 2, replace electric heater with the oily empty heat exchanger of a cover, and by above-mentioned working procedure pressurized gas is carried out heat treated.By calculating, can save by yuan (1.15 ten thousand yuan of 22kW electric heater costs, 7000 yuan on oily empty heat exchanger) surplus the equipment cost RMB 4500; Consider from the angle of environmental protection simultaneously, operation 1h can utilize waste heat 70MJ, be equivalent to per hour save: 19.4 degree, reduce 19.34 kilograms of CO2 emissions, reduce 0.582 kilogram of SO2 emissions (every saving 1 degree electric weight is with regard to 0.997 kilogram of CO2 emissions of corresponding minimizing disposal of pollutants, 0.03 kilogram of SO2 emissions).
In addition, consider that from the total arrangement of complete sets of equipment oily empty heat exchanger is installed in the sound-insulating cover inside of air compressor, has taken full advantage of the confined space, this also meets the requirement of compactness as far as possible of colliery underground equipment volume; Consider from the underground coal mine electrical equipment requirement of explosion proof, adopt the empty heat exchanger of mechanical oil, guarantee that the security incident that part thus may cause is zero.
In sum, the compression heat energy that the described new screw air compressor of the embodiment of the invention utilizes air compressor to produce carries out heat exchange to air, not only take full advantage of the energy that is wasted, but also saved purchase cost and the power consumption of electric heater equipment.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (4)
1. a new screw air compressor is characterized in that,
With the inside of screw air compressor sound-insulating cover oily empty heat exchanger is set in the colliery, the empty heat exchanger of described oil is the equipment that utilizes lubricant oil and carry out heat exchange between the pressurized gas of super-dry, specifically comprises:
After air enters into pressing chamber through described colliery with the suction port of screw air compressor, in the process of air-breathing, compression, exhaust, produce a large amount of heat of compression, and in the compressed process of gas, the lubricant oil that the empty heat exchanger of described oil is discharged is injected to described pressing chamber to be mixed with gas, described lubricant oil absorbs a large amount of heat of compression, and together discharges described pressing chamber with pressurized gas;
The gas mixture of high temperature enters into barrel of oil and gas by the body relief opening, through rotation and deaerator make Oil-gas Separation at a high speed, gas after the separation is kept valve through excess pressure and is entered after cooler and cool off, finally discharge described colliery screw air compressor with≤40 ℃ temperature, and carry out the dry and secondary filter processing of dewatering of next step;
Under the lubricant oil liquid level of described barrel of oil and gas, get the feed cover that an oil circuit is connected to the empty heat exchanger of described oil, copper die groupings by the empty heat exchanger of described oil inside, with carry out heat exchange through the pressurized gas that enters the empty heat exchanger shell of described oil inside that dewaters after the filtration treatment, heat described pressurized gas, after having reached predefined temperature, discharge the empty heat exchanger of described oil through the pressurized gas of heat exchange and enter nitrogen generator.
2. according to the described new screw air compressor of claim 1, it is characterized in that,
The shell of the empty heat exchanger of described oil is made by seamless steel pipe, and inside is the heat exchange core group that the copper pipe of several proper alignment is formed.
3. according to the described new screw air compressor of claim 2, it is characterized in that,
The two ends of the empty heat exchanger staving of described oil are equipped with feed cover and oil return lid, communicate with the heat exchange core group of inside, and separate by the air chamber of seal ring and shell.
4. according to the described new screw air compressor of claim 1, it is characterized in that, the lubricant oil that the empty heat exchanger of described oil is discharged with enter oil cooler after the high temperature grease of described barrel of oil and gas mixes and cool off, being injected to described pressing chamber after the filtration again mixes with gas and is lubricated cooling, so go round and begin again and circulate, constantly cooled pressurized gas is heated, and offer nitrogen generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102532766A CN103277312A (en) | 2013-06-24 | 2013-06-24 | Novel screw air compressor |
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| CN2013102532766A CN103277312A (en) | 2013-06-24 | 2013-06-24 | Novel screw air compressor |
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| CN103277312A true CN103277312A (en) | 2013-09-04 |
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| CN2013102532766A Pending CN103277312A (en) | 2013-06-24 | 2013-06-24 | Novel screw air compressor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109681428A (en) * | 2018-12-13 | 2019-04-26 | 中山铭科压缩机有限公司 | A kind of explosion-proof screw rod supercharger of underground coal mine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2209661A (en) * | 1937-11-20 | 1940-07-30 | Superheater Co Ltd | Cooling, drying, and reheating compressed air |
| US3191854A (en) * | 1960-06-02 | 1965-06-29 | Atlas Copco Ab | Compressor units |
| US3785755A (en) * | 1971-11-22 | 1974-01-15 | Rogers Machinery Co Inc | Air compressor system |
| EP0230940A2 (en) * | 1986-01-22 | 1987-08-05 | Pressluft-Frantz GmbH | Air compressor provided with a dehumidification device |
| CN2182978Y (en) * | 1993-09-10 | 1994-11-16 | 开封市石油化工设备厂 | Intercooler for air compressor |
| CN101048596A (en) * | 2004-08-30 | 2007-10-03 | 特杰·恩格尔维克 | Arrangement and method for treatment of compressed gas |
-
2013
- 2013-06-24 CN CN2013102532766A patent/CN103277312A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2209661A (en) * | 1937-11-20 | 1940-07-30 | Superheater Co Ltd | Cooling, drying, and reheating compressed air |
| US3191854A (en) * | 1960-06-02 | 1965-06-29 | Atlas Copco Ab | Compressor units |
| US3785755A (en) * | 1971-11-22 | 1974-01-15 | Rogers Machinery Co Inc | Air compressor system |
| EP0230940A2 (en) * | 1986-01-22 | 1987-08-05 | Pressluft-Frantz GmbH | Air compressor provided with a dehumidification device |
| CN2182978Y (en) * | 1993-09-10 | 1994-11-16 | 开封市石油化工设备厂 | Intercooler for air compressor |
| CN101048596A (en) * | 2004-08-30 | 2007-10-03 | 特杰·恩格尔维克 | Arrangement and method for treatment of compressed gas |
Non-Patent Citations (1)
| Title |
|---|
| 张平: "螺杆压缩机油换热器和后换热器的泄漏原因分析及改进措施", 《压缩机技术》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109681428A (en) * | 2018-12-13 | 2019-04-26 | 中山铭科压缩机有限公司 | A kind of explosion-proof screw rod supercharger of underground coal mine |
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