CN219953656U - Oil injection screw compressor with stepless adjustment of oil injection quantity - Google Patents
Oil injection screw compressor with stepless adjustment of oil injection quantity Download PDFInfo
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- CN219953656U CN219953656U CN202320865929.5U CN202320865929U CN219953656U CN 219953656 U CN219953656 U CN 219953656U CN 202320865929 U CN202320865929 U CN 202320865929U CN 219953656 U CN219953656 U CN 219953656U
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- 238000002347 injection Methods 0.000 title claims abstract description 104
- 239000007924 injection Substances 0.000 title claims abstract description 104
- 238000001514 detection method Methods 0.000 claims abstract description 20
- 239000003921 oil Substances 0.000 claims description 285
- 239000010705 motor oil Substances 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 abstract description 21
- 239000010687 lubricating oil Substances 0.000 description 8
- 230000001276 controlling effect Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- Applications Or Details Of Rotary Compressors (AREA)
Abstract
An oil injection screw compressor with stepless adjustment of oil injection quantity, which is characterized in that: the structure of the compressor comprises a low-pressure host, an oil pump, a controller, a rotation speed detection module for detecting the rotation speed of the low-pressure host, an oil injection port arranged on the low-pressure host, and an oil inlet pipe communicated with the oil injection port, wherein the oil pump is arranged on the oil inlet pipe; the rotating speed detection module is in signal connection with the controller, the rotating speed of the oil pump is controlled by the variable frequency speed regulator, and the variable frequency speed regulator is in signal connection with the controller; the scheme of the utility model has the advantages that no flow regulating valve is required to be additionally arranged, the oil injection quantity entering the host can be accurately regulated according to actual needs, and stepless regulation of the oil injection quantity is realized.
Description
Technical Field
The utility model relates to the technical field of oil injection screw compressors, in particular to an oil injection screw compressor with stepless adjustment of oil injection quantity.
Background
The oil injection screw compressor is a compressor device commonly used in industry, wherein an oil supply system of the oil injection screw compressor forcedly injects lubricating oil into the interior of the compressor through an independently arranged oil pump, the injected oil has the functions of cooling, lubricating, sealing, noise reduction, cleaning and the like, but the injection of excessive oil also causes the increase of power consumption.
The oil injection port on the prior art compressor is of a fixed size, the size is designed according to the requirement of the maximum oil injection quantity, and the oil injection quantity cannot be adjusted, so that oil injection is carried out when the oil injection quantity requirement is smaller or the oil injection quantity is required to be the maximum, namely, the oil injection is excessive, and the power consumption of the compressor is overlarge. In order to solve the problem, the patent with the application number of CN201820434241.0 and the utility model name of variable oil injection quantity air compressor discloses a technical scheme that: the variable oil injection quantity air compressor comprises a host, a controller, a rotation speed detection module for detecting the rotation speed of the host, an oil injection port arranged on the host and an oil inlet pipe communicated with the oil injection port, wherein the rotation speed detection module is in signal connection with the controller, a flow regulating mechanism for controlling the flow of the oil inlet pipe is arranged on the oil inlet pipe, and the flow regulating mechanism is in signal connection with the controller; the flow regulating mechanism comprises a flow regulating valve arranged on the oil inlet pipe and a driver for controlling the flow regulating valve, and the driver is in signal connection with the controller; it can be seen from this that this patent discloses a way of realizing the control of the injection quantity by setting up the flow control valve on the oil feed pipe, but this technical scheme still has certain drawbacks: firstly, a flow regulating valve is additionally arranged on an oil inlet pipe, and the flow regulating valves are valve bodies with certain opening flow, and the corresponding flow is fixed once the flow regulating valve is opened, so that the technical scheme can realize the adjustment of the oil injection quantity, but the adjustment mode of adjusting the opening degree through the valve can meet the requirements of different oil injection quantities, but the adjustment structure still has a limited range of oil quantity change, the oil injection quantity cannot be accurately controlled according to the actual lubricating oil requirement, and the situation that the oil injection quantity deviates from the actual requirement still exists; in addition, the scheme is also provided with a conduction oil duct, and the oil duct accounts for 25% -30% of the total oil duct of the oil inlet pipe, so that although the arrangement can ensure the inflow of oil in the state that the regulating valve is closed, the inflow of oil is still a fixed numerical interval, and the oil injection quantity can not be accurately regulated according to the oil quantity required by an actual host.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model provides the oil injection screw compressor which does not need to additionally arrange a flow regulating valve, can accurately regulate the oil injection quantity entering a host according to actual needs and realizes stepless regulation of the oil injection quantity.
In order to solve the technical problems, the utility model adopts the following technical scheme: the structure of the oil injection screw compressor comprises a host, an oil pump, a controller, a rotating speed detection module for detecting the rotating speed of the host, an oil injection port arranged on the host, and an oil inlet pipe communicated with the oil injection port, wherein the oil pump is arranged on the oil inlet pipe; the rotating speed detection module is in signal connection with the controller, the rotating speed of the oil pump is controlled by the variable frequency speed regulator, and the variable frequency speed regulator is in signal connection with the controller.
By adopting the structure, the oil injection quantity adjustable structure of the utility model detects the rotation speed of the host through the rotation speed detection module, and then controls the rotation speed of the oil pump through the variable frequency speed regulator according to the rotation speed of the host, so that the rotation speed of the oil pump is matched with the rotation speed of the host, the control of the rotation speed of the oil pump can realize the control of the oil injection quantity, thereby accurately adjusting the oil supply quantity of the oil pump through the adjustment of the rotation speed of the oil pump, reducing the rotation speed of the oil pump when the oil injection quantity is less in need, thereby reducing the oil supply quantity and further reducing the power consumption of the compressor; the structure of the utility model realizes the adjustment of the oil injection quantity of the oil pump by directly adjusting the rotation speed of the oil pump, and the rotation speed of the oil pump is associated with the oil injection quantity and is simultaneously matched with the rotation speed of the main engine, so that the aim of accurately controlling the oil injection quantity according to the actual oil demand of the main engine is realized, and compared with the structure of adjusting the oil quantity through a flow adjusting valve and a conduction oil duct in two gears or three gears in the prior art, the structure of the utility model is a stepless adjustment mode (the rotation speed of the oil pump is adjusted according to the rotation speed of the main engine, thereby realizing the control of the oil injection quantity of the oil pump) and the oil injection quantity adjustment are more accurate; in addition, the structure of the utility model does not need to additionally arrange a flow regulating valve on the oil inlet pipe and a conduction oil duct.
Further, a temperature sensor is arranged on the oil outlet pipeline of the host, and the temperature sensor is in signal connection with the controller; by adopting the structure, the temperature sensor can detect the temperature of the oil from the main engine in the oil outlet pipeline in real time, so that the controller can judge the oil demand of the main engine at the moment, and the rotating speed of the oil pump can be adjusted through the variable frequency speed regulator, thereby realizing the purpose of adjusting the oil injection quantity of the machine.
Further, the temperature control valve is arranged on the oil inlet pipe between the oil pump and the oil inlet, and the temperature of lubricating oil entering the host can be monitored by the arrangement of the structure, so that the temperature of the lubricating oil entering the host is ensured to be constant.
Further, the radiator is arranged on the oil inlet pipe between the oil pump and the oil inlet, and by adopting the structure, oil can be effectively cooled, and high-temperature lubricating oil is prevented from entering the host.
Further, an oil-gas barrel is arranged between the oil outlet pipeline and the oil pump, an oil-gas separator is arranged in the oil-gas barrel, and the oil pump is communicated with the oil-gas barrel and sucks oil in the oil-gas barrel out to enter the host; by adopting the structure, the oil from the host can be collected into the oil-gas barrel, the oil and the gas are separated through the oil-gas separator, the obtained oil is sucked out through the oil pump and then enters the host again, and the oil can be effectively recycled.
Furthermore, the oil gas barrel is communicated with an oil viewing mirror, and the oil viewing mirror is used for detecting the oil level.
Further, the oil filter is arranged on the oil inlet pipe between the oil pump and the oil inlet, and by adopting the structure, oil processed from the host can be effectively filtered, so that impurity components are prevented from entering the host.
Furthermore, the host is a low-pressure host, namely a low-pressure oil injection screw compressor with the pressure range of 0.05MPa to 0.3MPa, and the scheme for realizing the real-time adjustment of the oil injection quantity by adjusting the rotation speed of the oil pump is more beneficial to the oil quantity adjustment of the low-pressure oil injection screw compressor, and the oil supply quantity (rotation speed) of the oil pump can be reduced when the oil injection quantity requirement is smaller, so that the power consumption of the low-pressure host is reduced.
Drawings
FIG. 1 is a schematic diagram of an exemplary variable injection capacity injection screw compressor according to the present utility model.
FIG. 2 is a schematic diagram of another exemplary variable injection capacity injection screw compressor according to the present utility model.
FIG. 3 is a block diagram of the circuit connections of the variable injection capacity oil screw compressor of the present utility model.
As shown in the accompanying drawings: 1. the engine comprises a host machine, an oil injection port, an oil pump, an oil inlet pipe, an oil outlet pipeline, a temperature sensor, a temperature control valve, a radiator, an oil-gas barrel, an oil-gas separator, an oil-viewing mirror and an engine oil filter.
Detailed Description
The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the embodiments and the accompanying drawings, and it is apparent that the described embodiments are only preferred embodiments, not all embodiments. All other embodiments, based on the embodiments of the utility model, which a person of ordinary skill in the art would obtain without inventive faculty, are within the scope of the utility model;
furthermore, it is to be noted that: when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1-3, the structure of the oil injection screw compressor with variable oil injection quantity comprises a main machine 1 (screw compression main machine), an oil pump 2 (realizing the supply of the oil injection quantity of the main machine), a controller, a rotating speed detection module for detecting the rotating speed of the main machine, an oil injection port 101 arranged on the main machine 1 (used for inputting the oil pumped by the oil pump into the main machine), and an oil inlet pipe 3 communicated with the oil injection port 101, wherein the oil pump 2 is arranged on the oil inlet pipe 3; the rotation speed detection module is in signal connection with the controller (or is electrically connected, the rotation speed of the main engine detected by the rotation speed detection module can be transmitted to the controller in real time and can be suitable for the utility model), the rotation speed of the oil pump 2 is controlled by the variable frequency speed regulator, the variable frequency speed regulator is in signal connection with the controller (or is electrically connected, the rotation speed signal of the main engine obtained by the controller can be transmitted to the variable frequency speed regulator in real time and can be suitable for the utility model), and then the variable frequency speed regulator controls and adjusts the rotation speed of the oil pump after obtaining the main engine rotation speed signal sent by the controller, so that the rotation speed of the oil pump is matched with the main engine rotation speed, and meanwhile, the oil supply amount adjustment of the oil pump is realized.
By adopting the structure, the oil injection quantity adjustable structure of the utility model detects the rotation speed of the host through the rotation speed detection module, and then controls the rotation speed of the oil pump through the variable frequency speed regulator according to the rotation speed of the host, so that the rotation speed of the oil pump is matched with the rotation speed of the host, the control of the rotation speed of the oil pump can realize the control of the oil injection quantity, thereby accurately adjusting the oil supply quantity of the oil pump through the adjustment of the rotation speed of the oil pump, reducing the rotation speed of the oil pump when the oil injection quantity is less in need, and further reducing the oil supply quantity and the power consumption of the compressor; the structure of the utility model realizes the adjustment of the oil injection quantity of the oil pump by directly adjusting the rotation speed of the oil pump, and the rotation speed of the oil pump is associated with the oil injection quantity and is simultaneously matched with the rotation speed of the main engine, so that the aim of accurately controlling the oil injection quantity according to the actual oil demand of the main engine is fulfilled, and compared with the structure of adjusting the oil quantity in two gears or three gears by the structure of a flow adjusting valve and a conduction oil duct, the structure of the utility model is a stepless adjustment mode (the rotation speed of the oil pump is adjusted according to the rotation speed of the main engine, thereby realizing the accurate control of the oil injection quantity of the oil pump) and the oil injection quantity adjustment are more accurate; in addition, the structure of the utility model does not need to additionally arrange a flow regulating valve on the oil inlet pipe and a conduction oil duct; the utility model is mainly characterized in that in an oil supply system of the compressor, the frequency conversion controller is arranged to directly control the rotating speed of the oil pump, so that the rotating speed is matched with the rotating speed of the main engine, the oil injection quantity of the oil pump is directly regulated according to the rotating speed regulation of the oil pump, the oil supply system is a stepless regulation mode, and the oil supply system is more accurate in corresponding to the regulation modes of the flow regulating valve and the conduction oil duct in the prior art, and is more beneficial to reducing the loss of the compressor.
As an example, as shown in fig. 2-3, the oil outlet pipeline 4 of the host 1 is provided with a temperature sensor 5, and the temperature sensor 5 is in signal connection with the controller; by adopting the structure, the temperature sensor can detect the temperature of the oil from the main engine in the oil outlet pipeline in real time, so that the controller can judge the oil demand of the main engine at the moment, and the rotating speed of the oil pump can be adjusted through the variable frequency speed regulator, thereby realizing the purpose of adjusting the oil injection quantity of the machine.
As an example, as shown in fig. 2, a temperature control valve 6 is arranged on an oil inlet pipe between the oil pump 2 and the oil inlet 101, and the arrangement of the structure can realize monitoring of the temperature of lubricating oil entering a host, ensure the constancy of the temperature of the lubricating oil entering the host, and avoid the influence of the excessive temperature entering the host on the operation of the host.
As an example, as shown in fig. 1-2, a radiator 7 is arranged on an oil inlet pipe between an oil pump 2 and an oil inlet 101, and by adopting the structure, oil can be effectively cooled, and high-temperature lubricating oil is prevented from entering a host.
As an example, as shown in fig. 1-2, an oil-gas barrel 8 is arranged between the oil outlet pipeline 4 and the oil pump 2, an oil-gas separator 9 is arranged in the oil-gas barrel 8, and the oil pump 2 is communicated with the oil-gas barrel 8 and sucks oil in the oil-gas barrel 8 out to enter the host 1; by adopting the structure, the oil from the host can be collected into the oil-gas barrel, the oil and the gas are separated through the oil-gas separator, the obtained oil is sucked out through the oil pump and then enters the host again, and the oil can be effectively recycled.
As an example, as shown in fig. 2, an oil-gas barrel 8 of the utility model is communicated with an oil-viewing mirror 10, and the oil-viewing mirror 10 is used for detecting the oil level; the structure can be used for conveniently observing the liquid level of oil in the oil-gas barrel in real time.
As an example, as shown in fig. 2, an engine oil filter 11 is arranged on an oil inlet pipe 3 between an oil pump 2 and an oil inlet 101, and by adopting the structure, oil from a host can be effectively filtered, so that impurity components are prevented from entering the host; the oil pump is positioned at the oil outlet end of the oil-gas barrel, and the oil in the oil-gas barrel is sucked out by the oil pump, flows into the radiator 7 (or called a heat exchanger) for cooling after being sucked out, is filtered to impurities by the engine oil filter 11, and then enters the host 1 through the oil injection port 101, so that the circulation of the oil is realized.
As an example, the host 1 of the present utility model is a low-pressure host, that is, a host of a low-pressure oil injection screw compressor with a pressure range of 0.05MPa to 0.3MPa, because the present utility model implements a scheme of adjusting the oil injection amount in real time by adjusting the rotation speed of the oil pump, which is more beneficial to the oil amount adjustment of the low-pressure oil injection screw compressor; because the working pressure of the low-pressure oil injection screw compressor is small, the oil demand is small and can change in a smaller oil demand interval, the power consumption of a host can be avoided by more accurate oil supply quantity adjustment.
The working principle and the working process of the oil injection screw compressor with variable oil injection quantity are as follows: the structure of the compressor comprises a host, an oil pump, a controller, a rotation speed detection module (the rotation speed detection module can be arranged in the host or a variable frequency speed regulator, not shown in the figure) for detecting the rotation speed of the host, an oil injection port arranged on the host, and an oil inlet pipe communicated with the oil injection port, wherein the oil pump is arranged on the oil inlet pipe; the rotating speed detection module is in signal connection with the controller, the rotating speed of the oil pump is controlled by a variable frequency speed regulator (a speed regulator for controlling the rotating speed of the oil pump), and the variable frequency speed regulator is in signal connection with the controller; the variable-frequency speed regulator is arranged on the control of the rotation speed of the oil pump and then is in signal connection with the controller, so that the rotation speed of the oil pump can be regulated according to the rotation speed of the host machine detected by the host machine rotation speed detection module, the purpose of regulating the oil supply quantity of the oil pump can be directly realized, the rotation speed of the oil pump can be reduced to reduce the oil supply quantity when the oil injection quantity requirement is smaller, and the variable-frequency speed regulator is particularly suitable for a low-pressure host machine, and further the power consumption of a compressor is reduced; in addition, the temperature sensor is arranged to detect the temperature of oil from the main engine in real time, so that the controller can judge whether the temperature is high or low, and the rotating speed of the oil pump can be adjusted through frequency conversion speed regulation, and the adjustment of the oil injection quantity can be realized; therefore, the structure of the utility model can realize the control of the oil injection quantity by directly adjusting the rotation speed of the oil pump, does not need to additionally arrange a flow regulating valve for control, does not need to reserve a conduction oil duct, can realize stepless adjustment and ensures more accurate oil injection quantity supply; the utility model discloses a device capable of realizing the functions of the utility model, which comprises a rotation speed detection module, a controller, a variable frequency speed regulator, a temperature sensor and the like, wherein the specific connection mode and the position of the device in the scheme can realize the detection of the rotation speed of a host machine and the effective transmission of the rotation speed to the controller; the main utility model is characterized in that the rotating speed of the host is detected in real time through the rotating speed detection module and is transmitted to the controller, then the controller transmits the acquired rotating speed signal of the host to the variable frequency speed regulator, the variable frequency speed regulator regulates and controls the rotating speed of the oil pump in real time according to the acquired rotating speed signal of the host, so that the rotating speed of the oil pump is mutually matched with the rotating speed of the host, the oil supply quantity of the oil pump for providing the host with the oil quantity required by the oil pump is enabled to be more accurate, the purpose of accurately regulating the oil supply quantity in real time according to the oil quantity required by the host is realized, and the stepless regulation mode is realized.
Claims (8)
1. An oil injection screw compressor with stepless adjustment of oil injection quantity, which is characterized in that: the structure of the compressor comprises a low-pressure host, an oil pump, a controller, a rotation speed detection module for detecting the rotation speed of the low-pressure host, an oil injection port arranged on the low-pressure host, and an oil inlet pipe communicated with the oil injection port, wherein the oil pump is arranged on the oil inlet pipe; the rotating speed detection module is in signal connection with the controller, the rotating speed of the oil pump is controlled by the variable frequency speed regulator, and the variable frequency speed regulator is in signal connection with the controller.
2. The oil injection screw compressor of claim 1 wherein the oil injection amount is infinitely variable, characterized by: and a temperature sensor is arranged on the oil outlet pipeline of the low-pressure host, and the temperature sensor is in signal connection with the controller.
3. The oil injection screw compressor of claim 1 wherein the oil injection amount is infinitely variable, characterized by: and a temperature control valve is arranged on the oil inlet pipe between the oil pump and the oil inlet.
4. The oil injection screw compressor of claim 1 wherein the oil injection amount is infinitely variable, characterized by: and a radiator is arranged on the oil inlet pipe between the oil pump and the oil inlet.
5. The oil injection screw compressor of claim 2 wherein the oil injection amount is infinitely variable, characterized by: an oil-gas barrel is arranged between the oil outlet pipeline and the oil pump, an oil-gas separator is arranged in the oil-gas barrel, and the oil pump is communicated with the oil-gas barrel and sucks out the oil in the oil-gas barrel so as to enter the host.
6. The oil injection screw compressor of claim 5 wherein the oil injection amount is infinitely variable, characterized by: the oil-gas barrel is communicated with an oil-viewing mirror, and the oil-viewing mirror is used for detecting the oil level.
7. The oil injection screw compressor of claim 1 wherein the oil injection amount is infinitely variable, characterized by: and an engine oil filter is arranged on the oil inlet pipe between the oil pump and the oil inlet.
8. The oil injection screw compressor of claim 1 wherein the oil injection amount is infinitely variable, characterized by: the host is a low-voltage host.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320865929.5U CN219953656U (en) | 2023-04-10 | 2023-04-10 | Oil injection screw compressor with stepless adjustment of oil injection quantity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320865929.5U CN219953656U (en) | 2023-04-10 | 2023-04-10 | Oil injection screw compressor with stepless adjustment of oil injection quantity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219953656U true CN219953656U (en) | 2023-11-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320865929.5U Active CN219953656U (en) | 2023-04-10 | 2023-04-10 | Oil injection screw compressor with stepless adjustment of oil injection quantity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219953656U (en) |
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2023
- 2023-04-10 CN CN202320865929.5U patent/CN219953656U/en active Active
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