CN108317081A - The oil return system of air compressor machine - Google Patents
The oil return system of air compressor machine Download PDFInfo
- Publication number
- CN108317081A CN108317081A CN201810308221.3A CN201810308221A CN108317081A CN 108317081 A CN108317081 A CN 108317081A CN 201810308221 A CN201810308221 A CN 201810308221A CN 108317081 A CN108317081 A CN 108317081A
- Authority
- CN
- China
- Prior art keywords
- oil
- oil return
- head
- air compressor
- compressor machine
- Prior art date
- 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.)
- Pending
Links
Classifications
-
- 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
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
-
- 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
-
- 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
- F04C28/28—Safety arrangements; Monitoring
-
- 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
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
- F04C29/021—Control systems for the circulation of the lubricant
-
- 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
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
- F04C29/026—Lubricant separation
-
- 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
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/04—Heating; Cooling; Heat insulation
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention discloses a kind of oil return systems of air compressor machine, including sequentially connected head, oil eliminator, oil cooler, and the first oil return line and the second oil return line are connected between the oil cooler and head；When the air compressor machine is switched on, first oil return line is connected；When the air compressor machine is shut down, first oil return line disconnects；When the temperature of the head is more than the first setting value, second oil return line is connected；When the temperature of the head is less than the second setting value, second oil return line disconnects.The oil return system of air compressor machine using the present invention can disclosure satisfy that air compressor machine efficiency is high, reliability is high and requirement at low cost according to the fuel delivery of the temperature adjuster head of head.
Description
Technical field
The present invention relates to field of air compressor, in particular to a kind of oil return system of air compressor machine.
Background technology
Air compressor machine is a kind of equipment to compressed gas, is power-equipment most commonly seen in industrial and mining enterprises, can be divided into
Reciprocating, screw and large centrifugal, wherein helical-lobe compressor be widely used it is general.
Currently, helical-lobe compressor needs to meet three requirements：Efficiency is high, reliability is high (it is required that head temperature is less than 95
Degree), (unit floor space wants as small as possible) at low cost.In order to meet the high requirement of efficiency, can by control system resistance, subtract
Lack unit distributive value to realize；, can be by increasing distributive value or using large-scale cooler in order to meet reliability height, but increase spray
Oil mass can reduce unit efficiency, can increase machine packet size using large-scale cooler, cost also can correspondingly increase.Therefore, existing
Air compressor machine oil return system can not meet above three requirement simultaneously, existing air compressor machine is still using reducing distributive value and reduction
The size of cooler to meet efficiency height, requirement at low cost, but cannot be satisfied unit under high temperature environment, by head temperature
In 95 degree of requirements below, head temperature is excessively high, lubricant life can be caused to shorten for degree control, compressed air oil content height, axis
Hold a series of problems, such as being easily damaged.
For the above problem in the presence of the prior art, providing a kind of oil return system of new air compressor machine has important meaning
Justice.
Invention content
To solve the above problems, the present invention provides a kind of oil return system of air compressor machine, it can be according to the temperature tune of head
The fuel delivery for saving head disclosure satisfy that air compressor machine efficiency is high, reliability is high and requirement at low cost.
To achieve the above object, the oil return system of air compressor machine of the invention, including sequentially connected head, oil eliminator,
Oil cooler is connected with the first oil return line and the second oil return line between the oil cooler and head；
When the air compressor machine is switched on, first oil return line is connected；When the air compressor machine is shut down, described first time
Oil pipe line disconnects；
When the temperature of the head is more than the first setting value, second oil return line is connected；When the temperature of the head
When degree is less than the second setting value, second oil return line disconnects.
Preferably, first oil return line is equipped with the oil cut-off valve for controlling the first oil return line break-make.
Further, the oil cut-off valve is mechanical oil cut-off valve.
Preferably, second oil return line is equipped with the control valve for controlling the second oil return line break-make, institute
The temperature sensor for stating the temperature that head is equipped with for detecting the head, connects between the control valve and temperature sensor
There are controller, the controller that can control opening for the control valve according to the temperature signal that the temperature sensor exports
It closes.
Further, the control valve is motor-operated control valve or pneumatic control valve.
Preferably, thermostat valve is equipped between the oil eliminator and oil cooler, there are one oil inlets for the thermostat valve tool
With two oil outlets, the oil inlet of the thermostat valve is connect with the oil outlet of the oil eliminator, and one of the thermostat valve goes out
Hydraulic fluid port is connect with the oil inlet of the oil cooler, another oil outlet is connect with the head.
Preferably, oil strainer is equipped between the oil cooler and head.
Preferably, the air compressor machine is helical-lobe compressor.
Compared with prior art, the advantageous effect of the oil return system of air compressor machine of the invention is：
1, by increasing the second oil return line and control valve so that air compressor machine can at any time be adjusted according to the temperature of head
The fuel delivery of head, it is excessively high to avoid head temperature, and meet high efficiency, reliability height and requirement at low cost simultaneously；
2, by the way that oil cut-off valve is arranged, it can avoid lubricating oil when air compressor machine is shut down and flow to head, to avoid screw rod for a long time
It is immersed in cooling lubricating oil；
3, by the way that thermostat valve is arranged, lubricating oil can be made, which to require no oil cooler when temperature is relatively low again, can enter head,
The energy is saved；
4, by the way that oil strainer is arranged, it can avoid oil cut-off valve and control valve block, so that it is guaranteed that the fuel delivery of head, ensures
The cooling effect of head.
Description of the drawings
Fig. 1 is the system flow chart of the oil return system of the air compressor machine of the present invention.
Specific implementation mode
In the following, in conjunction with attached drawing, structure and operation principle to the present invention etc. are further described.
Referring to Fig. 1, by taking helical-lobe compressor as an example, the oil return system of air compressor machine of the invention, including sequentially connected head
1, oil eliminator 2, oil cooler 4 are connected with the first oil return line 6 and the second oil return line 7 between oil cooler 4 and head 1.
First oil return line 6 and the second oil return line 7 are directly connected to the rotor chamber of head 1.The air-fuel mixture come out by head 1
Object initially enter oil eliminator 2 carry out Oil-gas Separation, the lubricating oil separated by oil eliminator 2 enter back into oil cooler 4 into
Row cooling, lubricating oil after cooling are returned by the first oil return line 6 and the second oil return line 7 in the rotor chamber of head 1 again.
Above-mentioned first oil return line 6 can be according to the startup-shutdown of air compressor machine come the break-make of control system oil circuit, to avoid sky
Press stop moment lubricating oil still flow to head 1, and then screw rod is avoided to be impregnated in cooling lubricating oil for a long time.Specifically,
When air compressor machine is switched on, the first oil return line 6 is connected, and the lubricating oil come out by oil cooler 4 can be flowed through the first oil return line 6
To head 1；When air compressor machine is shut down, the first oil return line 6 disconnects, and the lubricating oil come out by oil cooler 4 can not flow to head
1。
As a kind of mode, the oil cut-off valve 8 for controlling 6 break-make of the first oil return line can be set on the first oil return line 6.
The oil cut-off valve 8 has two kinds of electromagnetic type oil cut-off valve and mechanical oil cut-off valve, wherein 8 poor reliability of electromagnetic type oil cut-off valve, short life,
It is easy to happen malfunction, therefore, preferably, the oil return system of the air compressor machine of the present invention uses mechanical oil cut-off valve, the oil-break
Valve 8 can fuel feeding and oil-break into head 1 accurately and in time, it is practical that the China that notification number is CN201751640U can be used
Pneumatic mechanical type oil cut-off valve disclosed in new patent, or use notification number for the Chinese utility model patent of CN202927443U
A kind of disclosed screw air compressor oil cut-off valve 8.The oil cut-off valve 8 has air inlet, oil inlet and oil outlet, the oil cut-off valve 8
Air inlet is connect with the gas outlet of head 1, and the oil inlet of the oil cut-off valve 8 is connect with the oil outlet of oil cooler 4, the oil cut-off valve 8
Oil outlet connect with head 1.The compressed air generated after air compressor machine is switched on enters the oil cut-off valve by the air inlet of oil cut-off valve 8
In 8, so that the oil inlet and oil outlet of the oil cut-off valve 8 communicate, in the first oil return line 6 under the pressure effect of compressed air
Lubricating oil then flows to head 1 by the oil outlet of the oil cut-off valve 8；After air compressor machine is shut down, non-compressed air is by the oil cut-off valve 8
Air inlet enters the oil cut-off valve 8, so that the oil inlet and oil outlet of the oil cut-off valve 8 are not communicated with, in the first oil return line 6
Lubricating oil can not then flow to head 1.
Above-mentioned second oil return line 7 can adjust the fuel delivery of head 1 according to the temperature level of head 1, thus by head 1
Temperature is controlled in suitable temperature.During compressor operation, 1 temperature of head constantly increases, especially under high temperature environment,
The temperature of head 1 is far more than 95 degree, and the fuel delivery of the first oil return line 6 cannot be satisfied requirement at this time, generates the temperature because of head 1
A series of problems caused by height is spent, at this point, the fuel delivery of head 1 can be increased by connecting the second oil return line 7, is reduced
The temperature of head 1, to improve the reliability of unit.Specifically, when the temperature of head 1 is more than the first setting value, the second oil return
Pipeline 7 is connected；When being decreased to less than the second setting value at a temperature of head 1, the second oil return line 7 disconnects, and reduces the confession of head 2
Oil mass, to improve unit efficiency.
As a kind of mode, the control valve 9 for controlling 7 break-make of the second oil return line can be set on the second oil return line 7,
Meanwhile head 1 is equipped with the temperature sensor (not shown) of the temperature for detecting head 1, control valve 9 and temperature sensing
Controller 10 is connected between device, which can control control valve 9 according to the temperature signal that temperature sensor exports
Opening and closing, i.e., when the temperature of head 1 be more than the first setting value when, the controller 10 control control valve 9 open to connect second time
Oil pipe line 7；When the temperature of head 1 decreases below the second setting value, the controller 10 control control valve 9 is opened to disconnect the
Two oil return lines 7.Wherein, the first setting value and the second setting value according to unit actual conditions and can require to set, for example, the
One setting value is selected as 93 degree, and the second setting value is selected as 88 degree.
Above-mentioned control valve 9 can be motor-operated control valve or pneumatic control valve, since the pipeline of pneumatic control valve is more complex, because
This, the control valve 9 of the oil return system of air compressor machine of the invention is preferably motor-operated control valve, such as 2/2-way solenoid valve.
Due to the starting stage of air compressor machine booting, the lubricating oil temperature in system is relatively low, do not need oil cooler 4 to its into
Row cooling is easy to cause if the lower lubricating oil of temperature also enters back into head 1 after the cooling of oil cooler 4 because of lubricating oil temperature
It is too low and make occur condensed water in machine set system, therefore, in order to avoid generating condensed water, and it is energy saving, as the present invention's
The oil return system of air compressor machine is further improved, and thermostat valve 3, the thermostat valve 3 tool are equipped between oil eliminator 2 and oil cooler 4
There are one oil inlet and two oil outlets, the oil inlet of thermostat valve 3 is connect with the oil outlet of oil eliminator 2, one of thermostat valve 3
Oil outlet is connect with the oil inlet of oil cooler 4, another oil outlet is connect with head 1.The thermostat valve 3 can be detached according to by oil
The temperature level for the lubricating oil that device 2 comes out determines whether lubricating oil needs to cool down.I.e. when the inlet oil temperature of thermostat valve 3 reaches temperature
When controlling the set temperature of valve 3, the oil outlet that thermostat valve 3 is connect with oil cooler 4 is opened, and at this moment, lubricating oil enters oil cooler 4
Head 1 is entered back into after carrying out cooling；When the inlet oil temperature of thermostat valve 3 does not reach the set temperature of thermostat valve 3, thermostat valve 3
The oil outlet being connect with head 1 is opened, and at this moment, lubricating oil can be directly entered head 1.
In the operational process of air compressor machine, the impurity in air inevitably has fraction to be mixed into lubricating oil, is flowing
It is possible to that precipitation is caused to block through above-mentioned oil cut-off valve 8 and when control valve 9, so that oil cut-off valve 8 cannot be with the booting of air compressor machine
And open, control valve 9 can not be opened in time, in closing or semi-closed state, will be reduced the flow of lubricating oil in this way, is made machine
First 1 cooling effect is by serious influence, therefore, as a further improvement, oil is equipped between oil cooler 4 and head 1
Filter 5, specifically, the oil strainer 5 be set between oil cooler 4 and oil cut-off valve 8, control valve 9, can to lubricating oil into
Row filtering, it is ensured that the fuel delivery of head 1 extends the service life of air compressor machine to ensure air compressor machine normal operation.
More than, schematic description only of the invention, it will be recognized by those skilled in the art that in the work without departing from the present invention
On the basis of making principle, a variety of improvement can be made to the present invention, this is all belonged to the scope of protection of the present invention.
Claims (8)
1. a kind of oil return system of air compressor machine, including sequentially connected head, oil eliminator, oil cooler, which is characterized in that institute
It states and is connected with the first oil return line and the second oil return line between oil cooler and head；
When the air compressor machine is switched on, first oil return line is connected；When the air compressor machine is shut down, first oil return pipe
Road disconnects；
When the temperature of the head is more than the first setting value, second oil return line is connected；When the temperature of the head is small
When the second setting value, second oil return line disconnects.
2. the oil return system of air compressor machine as described in claim 1, which is characterized in that first oil return line is equipped with and is used for
Control the oil cut-off valve of the first oil return line break-make.
3. the oil return system of air compressor machine as claimed in claim 2, which is characterized in that the oil cut-off valve is mechanical oil cut-off valve.
4. the oil return system of air compressor machine as described in claim 1, which is characterized in that second oil return line is equipped with and is used for
The control valve of the second oil return line break-make is controlled, the temperature that the head is equipped with the temperature for detecting the head passes
Sensor, is connected with controller between the control valve and temperature sensor, the controller can be according to the temperature sensor
The temperature signal of output controls the opening and closing of the control valve.
5. the oil return system of air compressor machine as claimed in claim 4, which is characterized in that the control valve is motor-operated control valve or gas
Dynamic control valve.
6. the oil return system of air compressor machine as described in claim 1, which is characterized in that between the oil eliminator and oil cooler
Equipped with thermostat valve, thermostat valve tool is there are one oil inlet and two oil outlets, the oil inlet of the thermostat valve and the oil
Oil outlet connection from device, an oil outlet of the thermostat valve are connect with the oil inlet of the oil cooler, another is fuel-displaced
Mouth is connect with the head.
7. the oil return system of air compressor machine as described in claim 1, which is characterized in that be equipped between the oil cooler and head
Oil strainer.
8. the oil return system of air compressor machine as described in claim 1, which is characterized in that the air compressor machine is helical-lobe compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810308221.3A CN108317081A (en) | 2018-04-08 | 2018-04-08 | The oil return system of air compressor machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810308221.3A CN108317081A (en) | 2018-04-08 | 2018-04-08 | The oil return system of air compressor machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108317081A true CN108317081A (en) | 2018-07-24 |
Family
ID=62897865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810308221.3A Pending CN108317081A (en) | 2018-04-08 | 2018-04-08 | The oil return system of air compressor machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108317081A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112253464A (en) * | 2020-11-12 | 2021-01-22 | 意朗实业（上海）有限公司 | Oil path control device, screw compressor system and oil path control method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306981A (en) * | 2012-03-12 | 2013-09-18 | 上海斯可络压缩机有限公司 | Double-screw air compressor |
| JP2014118869A (en) * | 2012-12-17 | 2014-06-30 | Mitsubishi Electric Corp | Oil returning circuit, and air compressor provided with the same |
| CN104454536A (en) * | 2014-10-29 | 2015-03-25 | 复盛实业(上海)有限公司 | Method and system for adjusting oil amount, controller and oil-injected screw compressor |
| CN106382769A (en) * | 2016-11-11 | 2017-02-08 | 珠海格力电器股份有限公司 | Compressor system and compressor control method |
| CN208123066U (en) * | 2018-04-08 | 2018-11-20 | 阿特拉斯·科普柯(无锡)压缩机有限公司 | The oil return system of air compressor machine |
-
2018
- 2018-04-08 CN CN201810308221.3A patent/CN108317081A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306981A (en) * | 2012-03-12 | 2013-09-18 | 上海斯可络压缩机有限公司 | Double-screw air compressor |
| JP2014118869A (en) * | 2012-12-17 | 2014-06-30 | Mitsubishi Electric Corp | Oil returning circuit, and air compressor provided with the same |
| CN104454536A (en) * | 2014-10-29 | 2015-03-25 | 复盛实业(上海)有限公司 | Method and system for adjusting oil amount, controller and oil-injected screw compressor |
| CN106382769A (en) * | 2016-11-11 | 2017-02-08 | 珠海格力电器股份有限公司 | Compressor system and compressor control method |
| CN208123066U (en) * | 2018-04-08 | 2018-11-20 | 阿特拉斯·科普柯(无锡)压缩机有限公司 | The oil return system of air compressor machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112253464A (en) * | 2020-11-12 | 2021-01-22 | 意朗实业（上海）有限公司 | Oil path control device, screw compressor system and oil path control method |
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