CN202023716U - Dew-point temperature control and heat recovery air compressor - Google Patents
Dew-point temperature control and heat recovery air compressor Download PDFInfo
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- CN202023716U CN202023716U CN2011200568825U CN201120056882U CN202023716U CN 202023716 U CN202023716 U CN 202023716U CN 2011200568825 U CN2011200568825 U CN 2011200568825U CN 201120056882 U CN201120056882 U CN 201120056882U CN 202023716 U CN202023716 U CN 202023716U
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- point temperature
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- dew point
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Abstract
The utility model discloses a dew-point temperature control and heat recovery air compressor, which comprises a compressor main body and an oil gas barrel, wherein the oil outlet pipeline of the oil gas barrel passes by an oil filter to be connected with the compressor main body, the air compressor is provided with a dew-point temperature controller, the oil gas barrel is provided with a temperature sensor, and the temperature sensor is connected with the dew-point temperature controller; and a temperature control valve, a heat recovery heat exchanger, a pneumatic valve, an oil cooler and the like are arranged on the oil outlet pipeline of the oil gas barrel. The dew-point temperature controller applies the dew-point temperature control technology on the exhaust temperature of the air compressor, and according to the variation of the dew point under the pressures, the exhaust temperature of the air compressor is automatically adjusted and controlled online. Not only is the temperature of the mixture of the oil and the gas prevented from being lower than the dew point of the water vapour under the pressure, but also the exhaust temperature is prevented from being overhigh when the air compressor operates.
Description
Technical field
The utility model relates to a kind of air compressor, relates in particular to a kind of dew point temperature control energy recovery air compressor.
Background technique
The exhaust end base of oil injection threaded bolt air compressor is widely used in all trades and professions at present, produce a large amount of heat of compression in the pressurized air process, the most of heat of exhaust end base of oil injection threaded bolt air compressor by oil cooler but device take away, by in the air compressor oil circuit, increasing heat exchanger and control corresponding device, with originally by oil cooler but the heat collection taken away of device get up to realize energy recovery, heated hot water can be used as the domestic hot-water, be used for that employee's hot water is had a bath or as the boiler replenishing water preheating, can reduce the fuel cost in the boiler using process greatly.
Energy recovery air compressor of the prior art:
As shown in Figure 1, be air-cooled air compressor of the prior art; As shown in Figure 2, be water-cooled air compressor of the prior art.
During the compressor cold start, oily temperature is lower, and lubricant oil enters main frame 4 through thermostat valve 2, oil strainer 3 in the barrel of oil and gas 1, and energy recovery heat exchanger 5, oil cooler 6 are by bypass at this moment.When the oil temperature rise reached thermostat valve 2 control temperature, lubricant oil flowed into energy recovery heat exchanger 5, the water that heat transferred need be heated.Oily Wen Ruo after the heat exchange is lower than the control temperature of second thermostat valve 7, and then the bypass oil cooler 6, enters main frame 4 through oil strainer 3.
If oily temperature reaches the control temperature of second thermostat valve 7, then enter oil cooler 6, enter main frame 4 through oil strainer 3 again.If the oil temperature descends, judge successively after oil cooler 6 heat exchange, so go round and begin again and circulate through thermostat valve 2, second thermostat valve 7.
6 outlets of compressor oil cooler are provided with a temperature transducer 8, and air-cooled air compressor is provided with fan frequency variator 9, according to the variation realization fan frequency control of motor speed of oil temperature, the size of control cooling air quantity; Water-cooled air compressor cooling water channel is provided with pump variable frequency device (not shown), and warm variation realizes the frequency control of motor speed of water pump, the size of control cooling water flow according to oil cooler oil.
There is following shortcoming at least in above-mentioned energy recovery air compressor of the prior art:
Stipulate according to JB/T 6430-2002 " generally using the exhaust end base of oil injection threaded bolt air compressor ": " compressed-air actuated minimum temperature should be not less than its dew point temperature ", this just requires the delivery temperature of air compressor higher (general 75 ℃～95 ℃), to avoid in the pressurized air moisture to separate out, emulsification of lubricant causes the oil product life-span to be reduced.The variation of thermostat valve induction oil temperature, can only control by constant temperature, when air compressor moves in hot and humid environment, for example: 35 ℃ of ambient temperatures, relative moisture 50%, exhaust pressure 0.8MPa (G), the pressure leak source temperature is 65 ℃, if ambient temperature and relative moisture raise, be difficult to avoid separating out of moisture in the pressurized air.Otherwise, weather is cool, when relative moisture is hanged down operation, for example: 15 ℃ of ambient temperatures, relative moisture 30%, exhaust pressure 0.8MPa (G), the pressure leak source temperature only is 31.5 ℃, adopts the air compressor of thermostat valve, and delivery temperature still maintains higher numerical value, lubricating oil temperature height, long-time running cause the oil product life-span to be reduced.In addition, the high gas atomization of delivery temperature is unfavorable for Oil-gas Separation, and separating effect is bad, air compressor outlet oil content height.
Summary of the invention
The purpose of this utility model provides the dew point that a kind of temperature that can avoid gas mixture is lower than water vapour under its pressure of living in, can avoid the dew point temperature control energy recovery air compressor of the excessive discharge temperature of compressor operation again.
The purpose of this utility model is achieved through the following technical solutions:
Dew point temperature control energy recovery air compressor of the present utility model, comprise compressor host, barrel of oil and gas, the fuel-displaced pipeline of described barrel of oil and gas is connected to described compressor host through oil strainer, this air compressor is provided with dew point temperature control controller, described barrel of oil and gas is provided with temperature transducer, and described temperature transducer is connected with described dew point temperature control controller;
The fuel-displaced pipeline of described barrel of oil and gas is provided with thermostat valve, and the outlet of described thermostat valve divides two-way, and one the tunnel directly is connected with described oil strainer, and another road is connected with the energy recovery heat exchanger, and the outlet of described energy recovery heat exchanger is connected with pneumatic valve;
The outlet of described pneumatic valve divides two-way, and one the tunnel directly is connected with described oil strainer, and another road is connected with described oil strainer through oil cooler;
The heat recovery water pipeline of described energy recovery heat exchanger is provided with the heat recovery water control valve, and the control gas circuit of described pneumatic valve is provided with solenoid valve, and the control wiring of described dew point temperature control controller is connected respectively with solenoid valve with described heat recovery water control valve.
The technological scheme that is provided by above-mentioned the utility model as can be seen, the dew point temperature control energy recovery air compressor that the utility model embodiment provides, because air compressor is provided with dew point temperature control controller, the energy recovery air compressor is when realizing energy recovery, the air compressor delivery temperature is taked the dew point temperature control technique, promptly according to the variation of pressure leak source, the delivery temperature of air compressor is controlled in on-line automatic adjusting.Can avoid the temperature of gas mixture to be lower than the dew point of water vapour under its pressure of living in, can avoid the excessive discharge temperature of compressor operation again.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment's technological scheme, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is embodiments more of the present utility model, 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.
Fig. 1 is the schematic flow sheet of the air-cooled air compressor of energy recovery in the prior art;
Fig. 2 is the schematic flow sheet of energy recovery water-cooled air compressor in the prior art;
The dew point temperature control energy recovery water-cooled air compressor schematic representation that Fig. 3 provides for the utility model embodiment;
The air-cooled air compressor schematic representation of dew point temperature control energy recovery that Fig. 4 provides for the utility model embodiment.
Among the figure:
1, barrel of oil and gas, 2, thermostat valve, 3, oil strainer, 4, main frame, 5, the energy recovery heat exchanger, 6, oil cooler, 7, second thermostat valve, 8, temperature transducer, 9, the fan frequency variator;
10, dew point temperature control controller, 11, temperature transducer, 12, pneumatic valve, 13, solenoid valve, 14, temperature transducer, 15, temperature transducer;
CV1, heat recovery water control valve, CV2, cooling water control valve.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technological scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiments.Based on embodiment of the present utility model, those of ordinary skills belong to protection domain of the present utility model not making the every other embodiment who is obtained under the creative work prerequisite.
Dew point temperature control energy recovery air compressor of the present utility model, its preferable embodiment be as shown in Figure 3, Figure 4:
Comprise compressor host 4, barrel of oil and gas 1, the fuel-displaced pipeline of described barrel of oil and gas 1 is connected to described compressor host 4 through oil strainer 3, this air compressor is provided with dew point temperature control controller 10, described barrel of oil and gas 1 is provided with temperature transducer 11, and described temperature transducer 11 is connected with described dew point temperature control controller 10;
The fuel-displaced pipeline of described barrel of oil and gas 1 is provided with thermostat valve 2, and the outlet of described thermostat valve 2 divides two-way, and one the tunnel directly is connected with described oil strainer 3, and another road is connected with energy recovery heat exchanger 5, and the outlet of described energy recovery heat exchanger 5 is connected with pneumatic valve 12;
The outlet of described pneumatic valve 12 divides two-way, and one the tunnel directly is connected with described oil strainer 3, and another road is connected with described oil strainer 3 through oil cooler 6;
The heat recovery water pipeline of described energy recovery heat exchanger 5 is provided with heat recovery water control valve CV1, the control gas circuit of described pneumatic valve 12 is provided with solenoid valve 13, and the control wiring of described dew point temperature control controller 10 is connected respectively with solenoid valve 13 with described heat recovery water control valve CV1.
As shown in Figure 3, it is the water-cooled air compressor among the utility model embodiment, described oil cooler 6 is a water to oil cooler, described water to oil cooler is provided with cooling water pipeline, described cooling water pipeline is provided with cooling water control valve CV2, and the control wiring of described dew point temperature control controller 10 is connected with described cooling water control valve CV2.
Described cooling water pipeline is provided with cooling waterpump, and the control wiring of described dew point temperature control controller 10 is connected with the frequency variator of described cooling waterpump.
Described cooling water control valve CV2 can be located on the export pipeline of described cooling water pipeline.
As shown in Figure 4, be the air-cooled air compressor among the utility model embodiment, described oil cooler 6 is air-cooled oil cooler, and described air-cooled oil cooler is provided with fan, described fan is provided with frequency variator 9, and the control wiring of described dew point temperature control controller 10 is connected with described frequency variator 9.
Described heat recovery water pipeline is provided with the heat recovery water pump, and the control wiring of described dew point temperature control controller 10 can be connected with the frequency variator of described heat recovery water pump.
Described heat recovery water control valve CV1 can be located on the export pipeline of described heat recovery water pipeline.
Can be provided with temperature transducer 14,15 on the described heat recovery water pipeline.
Exhaust end base of oil injection threaded bolt air compressor lubricant oil plays very crucial effect to the normal operation of unit, owing to contain moisture in the atmospheric air, if the temperature of gas mixture is lower than the dew point of water vapour under its pressure of living in the unit, just having liquid water occurs, liquid water with will make the compressor lubricant oil emulsion deterioration after lubricant oil mixes, improve as delivery temperature compressor operation, though can avoid moisture separates out, avoid oil emulsion, but can quicken the oxidation rate of oil product, shorten the working life of lubricant oil.
In the utility model, the energy recovery air compressor is taked the dew point temperature control technique to the air compressor delivery temperature when realizing energy recovery, promptly according to the variation of pressure leak source, and the delivery temperature of on-line automatic adjusting control air compressor.Can avoid the temperature of gas mixture to be lower than the dew point of water vapour under its pressure of living in, can avoid the excessive discharge temperature of compressor operation again.
Dew point temperature control device monitoring of environmental temperature and relative moisture calculate the pressure leak source temperature in conjunction with exhaust pressure, thereby control air compressor delivery temperature is controlled at certain temperature on the pressure leak source temperature all the time with it.Compare with thermostat valve constant temperature control mode,,, regulate the delivery temperature of air compressor automatically, guarantee that lubricant oil can emulsification according to the variation of working environment because the pressure leak source temperature is to calculate.When ambient temperature, humidity reduced, delivery temperature reduced, and lubricating oil temperature decreases, and can improve Oil-gas Separation efficient, prolonged oil product working life.
Control principle of the present utility model is:
During the compressor cold start, oily temperature is lower, and lubricant oil enters head through thermostat valve, oil strainer in the barrel of oil and gas, and energy recovery heat exchanger, oil cooler are by bypass at this moment.
When the oil temperature rise reaches thermostat valve control temperature, lubricant oil flows into the energy recovery heat exchanger, during pneumatic valve bypass oil cooler (hereinafter to be referred as oil cooling), dew point temperature control controller is relatively controlled the water yield that heat recovery water control valve (CV1) passes through by the lubricating oil temperature (T oil) of induction with the pressure leak source temperature of calculating (T dew point).When delivery temperature (T exhaust) was low, if T oil was less than the T dew point, and CV1 opens and closes angle and diminishes gradually, and water flow reduces, the T exhaust ↑; If the T exhaust raises, T oil surpasses certain temperature on the T dew point, and CV1 opens and closes angle and becomes gradually greatly, and water flow strengthens, the T exhaust ↓.The delivery temperature of air compressor is controlled at certain temperature on the pressure leak source temperature all the time.
Along with the water temperature in the water tank progressively heats rising, when the heat recovery water-exit temperature surpasses setting value, the solenoid valve dead electricity, pneumatic valve is connected oil cooling.If the heat recovery water-exit temperature is lower than following certain temperature of setting value, solenoid valve gets electric, and pneumatic valve is the bypass oil cooling again, so goes round and begins again and circulates.
Air-cooled machines configurations fan frequency variator, water-cooled machines configurations cooling water control valve (CV2), T oil is relatively realized the water yield that fan frequency control of motor speed or control CV2 pass through with the T dew point.Control principle is identical with CV1, and the variation that CV1 is opened and closed angle is interpreted as that the rotation speed change of fan or the variation that CV2 opens and closes angle get final product.The heat recovery water route also can be removed CV1 the pump variable frequency device is set in addition, and T oil is relatively realized the pump variable frequency speed governing with the T dew point.
Be provided with a thermostat valve in the oil-way system two effects are arranged: the first is by the oil circuit crushing minimum of thermostat valve, and flow process is the shortest, when air compressor starts, can realize the oil circuit Rapid Cycle, sets up oil pressure rapidly.Two to be that this thermostat valve is compared the control temperature with conventional energy recovery used for air compressor thermostat valve low for it, guarantees that air compressor keeps minimum delivery temperature and get final product.
When heat recovery water route water pump fault or other abnormal factors cause delivery temperature to reach dew point temperature control controller high temperature alarm value, force pneumatic valve to connect oil cooling, CV2 unlatching.
The beneficial effect that a specific embodiment of the present utility model brings is:
Air compressor is implemented the energy recovery remarkable benefit, is example with a power of motor 120kW air compressor, and the heat of the recyclable 302MJ of operation 1h per hour is equivalent to: save diesel oil: 7.82kg (diesel oil calorific value 42915kJ/kg, combustion efficiency 90%); Save rock gas: 9.98m3 (heating value of natural gas 35588kJ/m3, heat utilization efficiency 85%); Save: 83.9 degree; Reduce 83.6 kilograms of CO2 emissions, reduce 2.5 kilograms 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).
The dew point temperature control technique is applied on the heat recovery air compressor, makes improve greatly the working life of lubricant oil, is increased to 9000h the working life by original 6000h, and life-saving reaches 50% relatively, greatly reduces the more maintenance cost of oil change of user.In addition, because delivery temperature reduces, it is about 30% that complete machine improves working life, good oil gas separation effect, and the air outlet slit oil content is reduced to 1～2ppm by 3ppm.
The above; it only is the preferable embodiment of the utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claims.
Claims (8)
1. dew point temperature control energy recovery air compressor, comprise compressor host, barrel of oil and gas, the fuel-displaced pipeline of described barrel of oil and gas is connected to described compressor host through oil strainer, it is characterized in that, this air compressor is provided with dew point temperature control controller, described barrel of oil and gas is provided with temperature transducer, and described temperature transducer is connected with described dew point temperature control controller;
The fuel-displaced pipeline of described barrel of oil and gas is provided with thermostat valve, and the outlet of described thermostat valve divides two-way, and one the tunnel directly is connected with described oil strainer, and another road is connected with the energy recovery heat exchanger, and the outlet of described energy recovery heat exchanger is connected with pneumatic valve;
The outlet of described pneumatic valve divides two-way, and one the tunnel directly is connected with described oil strainer, and another road is connected with described oil strainer through oil cooler;
The heat recovery water pipeline of described energy recovery heat exchanger is provided with the heat recovery water control valve, and the control gas circuit of described pneumatic valve is provided with solenoid valve, and the control wiring of described dew point temperature control controller is connected respectively with solenoid valve with described heat recovery water control valve.
2. dew point temperature control energy recovery air compressor according to claim 1, it is characterized in that, described oil cooler is a water to oil cooler, described water to oil cooler is provided with cooling water pipeline, described cooling water pipeline is provided with the cooling water control valve, and the control wiring of described dew point temperature control controller is connected with described cooling water control valve.
3. dew point temperature control energy recovery air compressor according to claim 2 is characterized in that described cooling water pipeline is provided with cooling waterpump, and the control wiring of described dew point temperature control controller is connected with the frequency variator of described cooling waterpump.
4. dew point temperature control energy recovery air compressor according to claim 3 is characterized in that described cooling water control valve is located on the export pipeline of described cooling water pipeline.
5. dew point temperature control energy recovery air compressor according to claim 1, it is characterized in that described oil cooler is air-cooled oil cooler, described air-cooled oil cooler is provided with fan, described fan is provided with frequency variator, and the control wiring of described dew point temperature control controller is connected with described frequency variator.
6. according to each described dew point temperature control energy recovery air compressor of claim 1 to 5, it is characterized in that described heat recovery water pipeline is provided with the heat recovery water pump, the control wiring of described dew point temperature control controller is connected with the frequency variator of described heat recovery water pump.
7. dew point temperature control energy recovery air compressor according to claim 6 is characterized in that described heat recovery water control valve is located on the export pipeline of described heat recovery water pipeline.
8. dew point temperature control energy recovery air compressor according to claim 7 is characterized in that described heat recovery water pipeline is provided with temperature transducer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011200568825U CN202023716U (en) | 2011-03-04 | 2011-03-04 | Dew-point temperature control and heat recovery air compressor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200568825U CN202023716U (en) | 2011-03-04 | 2011-03-04 | Dew-point temperature control and heat recovery air compressor |
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| CN202023716U true CN202023716U (en) | 2011-11-02 |
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| CN2011200568825U Expired - Lifetime CN202023716U (en) | 2011-03-04 | 2011-03-04 | Dew-point temperature control and heat recovery air compressor |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102767521A (en) * | 2012-07-27 | 2012-11-07 | 复盛实业(上海)有限公司 | Oil amount adjusting method and system of oil jet screw compressor, and oil jet screw compressor |
| CN105673497A (en) * | 2016-04-01 | 2016-06-15 | 上海开山能源装备有限公司 | Standby energy-saving system and method for frequency-conversion screw compressor |
| CN106438364A (en) * | 2016-12-13 | 2017-02-22 | 萨震压缩机（上海）有限公司 | Compression ratio adjustable two-stage energy-saving air compressor |
| EP3315780B1 (en) | 2016-10-28 | 2018-12-26 | ALMiG Kompressoren GmbH | Oil-injected screw air compressor |
| CN113201374A (en) * | 2021-05-10 | 2021-08-03 | 开封黄河空分集团有限公司 | Gas inlet system for biogas purification and biogas treatment method |
| CN114962216A (en) * | 2022-03-30 | 2022-08-30 | 宁波鲍斯能源装备股份有限公司 | Medium-voltage machine capable of automatically controlling exhaust temperature and control method thereof |
-
2011
- 2011-03-04 CN CN2011200568825U patent/CN202023716U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102767521A (en) * | 2012-07-27 | 2012-11-07 | 复盛实业(上海)有限公司 | Oil amount adjusting method and system of oil jet screw compressor, and oil jet screw compressor |
| CN105673497A (en) * | 2016-04-01 | 2016-06-15 | 上海开山能源装备有限公司 | Standby energy-saving system and method for frequency-conversion screw compressor |
| EP3315780B1 (en) | 2016-10-28 | 2018-12-26 | ALMiG Kompressoren GmbH | Oil-injected screw air compressor |
| CN106438364A (en) * | 2016-12-13 | 2017-02-22 | 萨震压缩机（上海）有限公司 | Compression ratio adjustable two-stage energy-saving air compressor |
| CN106438364B (en) * | 2016-12-13 | 2018-05-08 | 萨震压缩机（上海）有限公司 | A kind of adjustable two-stage energy-saving air compressor of pressure ratio |
| CN113201374A (en) * | 2021-05-10 | 2021-08-03 | 开封黄河空分集团有限公司 | Gas inlet system for biogas purification and biogas treatment method |
| CN114962216A (en) * | 2022-03-30 | 2022-08-30 | 宁波鲍斯能源装备股份有限公司 | Medium-voltage machine capable of automatically controlling exhaust temperature and control method thereof |
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| CX01 | Expiry of patent term |
Granted publication date: 20111102 |