CN105673497A - Standby energy-saving system and method for frequency-conversion screw compressor - Google Patents
Standby energy-saving system and method for frequency-conversion screw compressor Download PDFInfo
- Publication number
- CN105673497A CN105673497A CN201610202431.5A CN201610202431A CN105673497A CN 105673497 A CN105673497 A CN 105673497A CN 201610202431 A CN201610202431 A CN 201610202431A CN 105673497 A CN105673497 A CN 105673497A
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- CN
- China
- Prior art keywords
- gas tank
- oil gas
- temperature
- compressor
- emptying
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/06—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids specially adapted for stopping, starting, idling or no-load operation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/24—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2270/00—Control; Monitoring or safety arrangements
- F04C2270/19—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2270/00—Control; Monitoring or safety arrangements
- F04C2270/58—Valve parameters
- F04C2270/585—Controlled or regulated
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2270/00—Control; Monitoring or safety arrangements
- F04C2270/90—Remote control, e.g. wireless, via LAN, by radio, or by a wired connection from a central computer
Abstract
The invention discloses a standby energy-saving system and method for a frequency-conversion screw compressor. The energy-saving system comprises the screw compressor, an oil gas tank connected with the screw compressor, a temperature sensor arranged in the oil gas tank and a high-pressure gas evacuation control mechanism. The temperature sensor monitors the temperature in the oil gas tank. The high-pressure gas evacuation control mechanism is connected with the temperature sensor. The temperature sensor monitors the temperature in the oil gas tank. When the temperature in the oil gas tank is lower than the set temperature, the high-pressure gas evacuation control mechanism controls evacuation of high-pressure gas in the oil gas tank. By means of the standby energy-saving system and method for the frequency-conversion screw compressor, the possibility of energy losses and excessive environment pollution which are caused by frequent evacuation of the high-pressure gas in the oil gas tank when the screw compressor is in a standby state frequently is avoided. Due to the fact that dew point temperature evacuation control under the current exhaust pressure is set, the phenomenon that water is separated out from the high-pressure gas in the oil gas tank due to the reduction of the temperature under the pressure maintaining condition, and consequently damage is caused to the overall safety operation of the system is avoided.
Description
Technical field
The invention belongs to Compressor Technology field, relate to a kind of helical-lobe compressor, particularly relate to a kind of inverter screw compressor standby energy-saving system; Meanwhile, the invention still further relates to a kind of inverter screw compressor standby energy-saving method.
Background technology
Compressor provides the compression gas with certain pressure according to the demand of user. A kind of common scenario is that user uses helical-lobe compressor to realize, it constantly changes by gas demand, it is no longer necessary to compression air in a certain period, helical-lobe compressor is then in holding state, and system oil gas tank gases at high pressure need emptying, energy waste can be caused, can inevitably discharge a certain amount of lubricating oil in emptying process, to environment simultaneously.
In view of this, nowadays in the urgent need to designing a kind of new compressor arrangement, in order to overcome the drawbacks described above that existing compressor exists.
Summary of the invention
The technical problem to be solved is: provide a kind of inverter screw compressor standby energy-saving system, and the helical-lobe compressor frequently standby energy loss causing the oil gas tank frequent emptying of inner high voltage gas to cause and too much environmental pollution can be avoided to be likely to.
Additionally, the present invention also provides for a kind of inverter screw compressor standby energy-saving method, the helical-lobe compressor frequently standby energy loss causing the oil gas tank frequent emptying of inner high voltage gas to cause and too much environmental pollution can be avoided to be likely to.
For solving above-mentioned technical problem, the present invention adopts the following technical scheme that
A kind of inverter screw compressor standby energy-saving system, described energy conserving system includes: oil gas tank, frequency conversion system that helical-lobe compressor is connected with described helical-lobe compressor, be arranged at the temperature sensor of described oil gas tank, gases at high pressure emptying controlling organization;
Temperature in described temperature sensor monitors oil gas tank, gases at high pressure emptying controlling organization is connected with temperature sensor;
When user sets and need not compress air in the time and cause that helical-lobe compressor is in holding state, described gases at high pressure emptying controlling organization controls oil gas tank inner high voltage gas and keeps pressure and not emptying at once;
Temperature in described temperature sensor monitors oil gas tank, when in oil gas tank temperature lower than current exhaust pressure under dew point temperature time, gases at high pressure emptying controlling organization control oil gas tank inner high voltage gas emptying;
Described compressor needs to restart, and when the oil gas tank being connected with described helical-lobe compressor is in high pressure packing state, described frequency conversion system controls described compressor band load low rate start, reduces compressor start load, it is ensured that described compressor assembly normally starts;
Described gases at high pressure emptying controlling organization includes valve, valve control mechanism, valve control mechanism connecting valve, controls valve switch according to the temperature data of temperature sensor senses.
A kind of inverter screw compressor standby energy-saving system, described energy conserving system includes: oil gas tank that helical-lobe compressor is connected with described helical-lobe compressor, be arranged at the temperature sensor of described oil gas tank, gases at high pressure emptying controlling organization;
Temperature in described temperature sensor monitors oil gas tank, gases at high pressure emptying controlling organization is connected with temperature sensor;
Temperature in described temperature sensor monitors oil gas tank, when in oil gas tank, temperature is lower than design temperature, gases at high pressure emptying controlling organization controls oil gas tank inner high voltage gas emptying.
As a preferred embodiment of the present invention, when in oil gas tank temperature lower than current exhaust pressure under dew point temperature time, gases at high pressure emptying controlling organization control oil gas tank inner high voltage gas emptying.
As a preferred embodiment of the present invention, described gases at high pressure emptying controlling organization includes valve, valve control mechanism, valve control mechanism connecting valve, controls valve switch according to the temperature data of temperature sensor senses.
As a preferred embodiment of the present invention, when user sets and need not compress air in the time and cause that helical-lobe compressor is in holding state, described gases at high pressure emptying controlling organization controls oil gas tank inner high voltage gas and keeps pressure and not emptying at once.
As a preferred embodiment of the present invention, described system also includes frequency conversion system; When described compressor needs to restart, when the oil gas tank being connected with described helical-lobe compressor is in high pressure packing state, described frequency conversion system controls described compressor band load low rate start, reduces compressor start load, it is ensured that described compressor assembly normally starts.
A kind of inverter screw compressor standby energy-saving method, described power-economizing method includes: be arranged at temperature in the temperature sensor monitors oil gas tank of oil gas tank; When in oil gas tank temperature lower than current exhaust pressure under dew point temperature time, gases at high pressure emptying controlling organization control oil gas tank inner high voltage gas emptying.
As a preferred embodiment of the present invention, when in oil gas tank temperature lower than current exhaust pressure under dew point temperature time, gases at high pressure emptying controlling organization control oil gas tank inner high voltage gas emptying.
The beneficial effects of the present invention is: the inverter screw compressor standby energy-saving system of present invention proposition and method, it is to avoid the helical-lobe compressor frequently standby energy loss causing the oil gas tank frequent emptying of inner high voltage gas to cause and too much environmental pollution are likely to. The present invention controls by arranging under current exhaust pressure dew point temperature emptying, it is to avoid because the reduction of temperature causes precipitating out in water gases at high pressure from oil gas tank being likely in pressurize situation, the whole safe operation of system is caused damage. Additionally, oil gas tank pressurize can cause when compressor restarts startup load relatively big and cannot start, by variable frequency adjustment, motor low frequency starts and reduces compressor start load, it is ensured that the smooth startup of compressor.
Accompanying drawing explanation
Fig. 1 is the composition schematic diagram of inverter screw compressor standby energy-saving system of the present invention.
Detailed description of the invention
The preferred embodiments of the present invention are described in detail below in conjunction with accompanying drawing.
Embodiment one
Refer to Fig. 1, present invention is disclosed a kind of inverter screw compressor standby energy-saving system, described energy conserving system includes: oil gas tank 2, frequency conversion system that helical-lobe compressor 1 is connected with described helical-lobe compressor 1, be arranged at the temperature sensor 3 of described oil gas tank, gases at high pressure emptying controlling organization 4.
Temperature in oil gas tank 2 is monitored in described temperature sensor 3, and gases at high pressure emptying controlling organization 4 is connected with temperature sensor 3.
When user sets and need not compress air in the time and cause that helical-lobe compressor is in holding state, described gases at high pressure emptying controlling organization controls oil gas tank inner high voltage gas and keeps pressure and not emptying at once.
Temperature in described temperature sensor monitors oil gas tank, when in oil gas tank temperature lower than current exhaust pressure under dew point temperature time, gases at high pressure emptying controlling organization control oil gas tank inner high voltage gas emptying.
When described compressor needs to restart, when the oil gas tank being connected with described helical-lobe compressor is in high pressure packing state, described frequency conversion system controls described compressor band load low rate start, reduces compressor start load, it is ensured that described compressor assembly normally starts.
Described gases at high pressure emptying controlling organization includes valve, valve control mechanism, valve control mechanism connecting valve, controls valve switch according to the temperature data of temperature sensor senses.
Embodiment two
A kind of inverter screw compressor standby energy-saving system, described energy conserving system includes: oil gas tank that helical-lobe compressor is connected with described helical-lobe compressor, be arranged at the temperature sensor of described oil gas tank, gases at high pressure emptying controlling organization.
Temperature in described temperature sensor monitors oil gas tank, gases at high pressure emptying controlling organization is connected with temperature sensor.
Temperature in described temperature sensor monitors oil gas tank, when in oil gas tank, temperature (is preferably dew point temperature under current exhaust pressure lower than design temperature, can certainly be other temperature) time, gases at high pressure emptying controlling organization controls oil gas tank inner high voltage gas emptying.
The present invention also discloses a kind of inverter screw compressor standby energy-saving method, and described power-economizing method includes: be arranged at temperature in the temperature sensor monitors oil gas tank of oil gas tank; When in oil gas tank temperature lower than current exhaust pressure under dew point temperature time, gases at high pressure emptying controlling organization control oil gas tank inner high voltage gas emptying.
Embodiment three
The present embodiment and embodiment one are distinctive in that, in the present embodiment, described helical-lobe compressor includes: compressor housing, intake valve, rotor, and intake valve includes intake valve valve body, piston, electromagnetic valve, connection pipeline, and compressor housing, intake valve valve bodyization design; Described helical-lobe compressor is Singe stage screw compressor.
Described compressor housing is provided with working chamber, and the working chamber at helical-lobe compressor arranges a pressure tappings, is connected with the piston rear end of intake valve by pressure tappings.
After described helical-lobe compressor starts, operating pressure is set up rapidly in the region at the pressure tappings place that helical-lobe compressor working chamber place is arranged.
Controlling connection pipeline ventilation by electromagnetic valve, the compression air will with certain pressure enters intake valve piston rear end, and by piston jack-up so that normally opened intake valve cuts out, thus reaching helical-lobe compressor to start the normally opened intake valve of closedown, thus starting smoothly; After startup, control to connect pipeline by electromagnetic valve and die, open normally opened intake valve.
The present embodiment is by arranging a pressure tappings in a certain position, compressor operating chamber, by pressure tappings and intake valve valve plate rear end UNICOM, after compressor start, operating pressure is set up rapidly in the region at the pressure tappings place that Singe stage screw compressor working chamber place is arranged, the compression air by connecting tube road with certain pressure is entered intake valve valve plate rear end and valve plate jack-up is closed, thus reaching Singe stage screw compressor to start the purpose closing normally opened intake valve, it can be ensured that compressor starts smoothly.
In sum, the present invention proposes inverter screw compressor standby energy-saving system and method, it is to avoid the helical-lobe compressor frequently standby energy loss causing the oil gas tank frequent emptying of inner high voltage gas to cause and too much environmental pollution are likely to. The present invention controls by arranging under current exhaust pressure dew point temperature emptying, it is to avoid because the reduction of temperature causes precipitating out in water gases at high pressure from oil gas tank being likely in pressurize situation, the whole safe operation of system is caused damage. Additionally, oil gas tank pressurize can cause when compressor restarts startup load relatively big and cannot start, by variable frequency adjustment, motor low frequency starts and reduces compressor start load, it is ensured that the smooth startup of compressor.
Here description of the invention and application is illustrative, is not wishing to limit the scope of the invention in above-described embodiment. The deformation of embodiments disclosed herein and change are possible, for those skilled in the art embodiment replace and the various parts of equivalence are known. It should be appreciated by the person skilled in the art that when without departing from the spirit of the present invention or substitutive characteristics, the present invention can in other forms, structure, layout, ratio, and realize with other assembly, material and parts. When without departing from the scope of the invention and spirit, it is possible to embodiments disclosed herein is carried out other deformation and changes.
Claims (8)
1. an inverter screw compressor standby energy-saving system, it is characterized in that, described energy conserving system includes: oil gas tank, frequency conversion system that helical-lobe compressor is connected with described helical-lobe compressor, be arranged at the temperature sensor of described oil gas tank, gases at high pressure emptying controlling organization;
Temperature in described temperature sensor monitors oil gas tank, gases at high pressure emptying controlling organization is connected with temperature sensor;
When user sets and need not compress air in the time and cause that helical-lobe compressor is in holding state, described gases at high pressure emptying controlling organization controls oil gas tank inner high voltage gas and keeps pressure and not emptying at once;
Temperature in described temperature sensor monitors oil gas tank, when in oil gas tank temperature lower than current exhaust pressure under dew point temperature time, gases at high pressure emptying controlling organization control oil gas tank inner high voltage gas emptying;
Described compressor needs to restart, and when the oil gas tank being connected with described helical-lobe compressor is in high pressure packing state, described frequency conversion system controls described compressor band load low rate start, reduces compressor start load, it is ensured that described compressor assembly normally starts;
Described gases at high pressure emptying controlling organization includes valve, valve control mechanism, valve control mechanism connecting valve, controls valve switch according to the temperature data of temperature sensor senses.
2. an inverter screw compressor standby energy-saving system, it is characterised in that described energy conserving system includes: oil gas tank that helical-lobe compressor is connected with described helical-lobe compressor, be arranged at the temperature sensor of described oil gas tank, gases at high pressure emptying controlling organization;
Temperature in described temperature sensor monitors oil gas tank, gases at high pressure emptying controlling organization is connected with temperature sensor;
Temperature in described temperature sensor monitors oil gas tank, when in oil gas tank, temperature is lower than design temperature, gases at high pressure emptying controlling organization controls oil gas tank inner high voltage gas emptying.
3. inverter screw compressor standby energy-saving system according to claim 2, it is characterised in that:
When in oil gas tank temperature lower than current exhaust pressure under dew point temperature time, gases at high pressure emptying controlling organization control oil gas tank inner high voltage gas emptying.
4. inverter screw compressor standby energy-saving system according to claim 2, it is characterised in that:
Described gases at high pressure emptying controlling organization includes valve, valve control mechanism, valve control mechanism connecting valve, controls valve switch according to the temperature data of temperature sensor senses.
5. inverter screw compressor standby energy-saving system according to claim 2, it is characterised in that:
When user sets and need not compress air in the time and cause that helical-lobe compressor is in holding state, described gases at high pressure emptying controlling organization controls oil gas tank inner high voltage gas and keeps pressure and not emptying at once.
6. inverter screw compressor standby energy-saving system according to claim 2, it is characterised in that:
Described system also includes frequency conversion system; When described compressor needs to restart, when the oil gas tank being connected with described helical-lobe compressor is in high pressure packing state, described frequency conversion system controls described compressor band load low rate start, reduces compressor start load, it is ensured that described compressor assembly normally starts.
7. an inverter screw compressor standby energy-saving method, it is characterised in that described power-economizing method includes: be arranged at temperature in the temperature sensor monitors oil gas tank of oil gas tank; When in oil gas tank temperature lower than current exhaust pressure under dew point temperature time, gases at high pressure emptying controlling organization control oil gas tank inner high voltage gas emptying.
8. inverter screw compressor standby energy-saving method according to claim 7, it is characterised in that:
When in oil gas tank temperature lower than current exhaust pressure under dew point temperature time, gases at high pressure emptying controlling organization control oil gas tank inner high voltage gas emptying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610202431.5A CN105673497A (en) | 2016-04-01 | 2016-04-01 | Standby energy-saving system and method for frequency-conversion screw compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610202431.5A CN105673497A (en) | 2016-04-01 | 2016-04-01 | Standby energy-saving system and method for frequency-conversion screw compressor |
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| Publication Number | Publication Date |
|---|---|
| CN105673497A true CN105673497A (en) | 2016-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610202431.5A Pending CN105673497A (en) | 2016-04-01 | 2016-04-01 | Standby energy-saving system and method for frequency-conversion screw compressor |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000291561A (en) * | 1999-03-31 | 2000-10-17 | Mitsubishi Heavy Ind Ltd | Air compressor |
| CN202023716U (en) * | 2011-03-04 | 2011-11-02 | 北京复盛机械有限公司 | Dew-point temperature control and heat recovery air compressor |
| CN102650279A (en) * | 2011-02-23 | 2012-08-29 | 上海慎邦电子科技有限公司 | Control method for variable frequency and constant pressure air supply of air compressor |
| 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 |
| US20130045118A1 (en) * | 2007-04-06 | 2013-02-21 | Quincy Compressor Llc | Smart Blow-Down System for Variable Frequency Drive Compressor Units |
-
2016
- 2016-04-01 CN CN201610202431.5A patent/CN105673497A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000291561A (en) * | 1999-03-31 | 2000-10-17 | Mitsubishi Heavy Ind Ltd | Air compressor |
| US20130045118A1 (en) * | 2007-04-06 | 2013-02-21 | Quincy Compressor Llc | Smart Blow-Down System for Variable Frequency Drive Compressor Units |
| CN102650279A (en) * | 2011-02-23 | 2012-08-29 | 上海慎邦电子科技有限公司 | Control method for variable frequency and constant pressure air supply of air compressor |
| CN202023716U (en) * | 2011-03-04 | 2011-11-02 | 北京复盛机械有限公司 | Dew-point temperature control and heat recovery air compressor |
| 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 |
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Application publication date: 20160615 |
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| RJ01 | Rejection of invention patent application after publication |