CN110821788A - Oil storage device, compressor comprising same and oil supply amount adjusting method - Google Patents
Oil storage device, compressor comprising same and oil supply amount adjusting method Download PDFInfo
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- CN110821788A CN110821788A CN201911000281.XA CN201911000281A CN110821788A CN 110821788 A CN110821788 A CN 110821788A CN 201911000281 A CN201911000281 A CN 201911000281A CN 110821788 A CN110821788 A CN 110821788A
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- oil
- oil storage
- storage tank
- compressor
- control valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/02—Lubrication
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/02—Lubrication
- F04B39/0284—Constructional details, e.g. reservoirs in the casing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/04—Measures to avoid lubricant contaminating the pumped fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/06—Cooling; Heating; Prevention of freezing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/10—Adaptations or arrangements of distribution members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention provides an oil storage device, a compressor comprising the oil storage device and an oil supply amount adjusting method, wherein the oil storage device comprises at least one oil storage tank, a control module, an oil supply way connected between two adjacent oil storage tanks, and a state detection assembly arranged on oil demand equipment, wherein the control module is internally stored with operation data and oil demand data of the oil demand equipment under different working conditions; the state detection assembly is in signal connection with the control module, and the control module controls the connection or disconnection of the oil supply channel according to state information provided by the state detection assembly so as to ensure that the oil storage amount in an oil storage tank directly connected with the oil demand equipment is equal to the oil demand of the oil demand equipment all the time. The oil storage amount in the oil storage tank connected with the compressor is always kept at the oil demand amount under the operation working condition of the compressor, the problem that the oil storage amount in the oil storage tank is too much and is taken away by exhaust stirring is solved, too much refrigerating oil does not participate in the oil circulation of the whole unit, and the pressure of the oil separator is not increased.
Description
Technical Field
The invention relates to the technical field of compressors, in particular to an oil storage device, a compressor comprising the oil storage device and an oil supply amount adjusting method.
Background
Compressors with built-in oil content are usually provided with an oil reservoir, and the oil in the oil reservoir is used for lubricating and cooling compressor bearings and rotors, and is an important substance for normal operation of the compressor. During the operation of the compressor, a part of the refrigerant oil in the oil storage tank is discharged out of the compressor along with the exhaust gas, separated from the system oil, and then sprayed through the suction pipe, and enters the compressor again along with the suction gas.
The applicant has found that the prior art has at least the following technical problems:
the compressor operation is under the pressure differential operating mode of difference, and the freezing oil mass of demand also is different, and if when freezing oil was more than the actual demand of compressor in the compressor oil storage tank, the exhaust can stir and take away partly freezing oil, causes the liquid level to rock in the oil storage tank easily, and the compressor wrong report is alert, and the freezing oil of taking away participates in the oil cycle of whole unit, increases unit oil separator's pressure.
Disclosure of Invention
The invention aims to provide an oil storage device, a compressor comprising the same and an oil supply amount adjusting method, which aim to solve the technical problems that when the oil demand of the compressor is low, the compressor is agitated by exhaust gas caused by the refrigerant oil in an oil storage tank and the redundant refrigerant oil is discharged out of the compressor along with the exhaust gas in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides an oil storage device which comprises at least one oil storage tank, a control module, an oil supply channel connected between two adjacent oil storage tanks and a state detection assembly arranged on oil demand equipment, wherein the control module stores the operation data and the oil demand data of the oil demand equipment under different working conditions; the state detection assembly is in signal connection with the control module, and the control module controls the connection or disconnection of the oil supply channel according to state information provided by the state detection assembly so as to ensure that the oil storage amount in one oil storage tank directly connected with the oil demand equipment is always equal to the oil demand of the oil demand equipment.
As a further improvement of the present invention, the number of the oil storage tanks is two, and the oil storage tanks are respectively a first oil storage tank and a second oil storage tank, the control module is disposed in the first oil storage tank, the first oil storage tank is connected to an oil demand device, a first control valve is disposed on the oil supply path communicated between the first oil storage tank and the second oil storage tank, and the control module can control the first control valve to open or close, so as to ensure that the oil storage amount in the first oil storage tank is equal to the oil demand of the oil demand device.
As a further improvement of the present invention, a flow rate detector is provided on the first control valve.
As a further improvement of the present invention, there is a height difference between the second oil reservoir and the first oil reservoir, and the second oil reservoir is installed at a position higher than the first oil reservoir.
As a further improvement of the present invention, a back-pumping assembly capable of back-pumping the oil stored in the first oil storage tank into the second oil storage tank is disposed on the second oil storage tank, the back-pumping assembly includes a back-pumping pipeline, a back-pumping power source disposed at a tail end of the back-pumping pipeline, and a third control valve disposed on the back-pumping pipeline, and the control module is electrically connected to the third control valve to control communication or interruption of the back-pumping pipeline.
As a further improvement of the invention, the second oil storage tank is also provided with an oil inlet assembly, the oil inlet assembly comprises an oil inlet pipe and a second control valve, and the control module is electrically connected with the second control valve.
As a further improvement of the invention, the maximum oil storage capacity of the second oil storage tank is greater than the maximum demand of the oil demand equipment, and the oil storage capacity of the first oil storage tank is not greater than the oil storage capacity of the second oil storage tank.
As a further improvement of the invention, a heating element for heating the oil reservoir is arranged on the second oil reservoir.
As a further improvement of the present invention, the condition detecting unit includes a pressure sensor for detecting suction and discharge pressures of the oil requiring equipment.
The invention provides a compressor which comprises a compressor body and an oil separator connected with an exhaust section of the compressor body, wherein two ends of an oil storage device are respectively connected with the compressor body and the oil separator.
The invention provides an oil supply amount adjusting method for adjusting the oil amount of a compressor provided with an oil storage device, which comprises the following steps:
step 100, preparation: connecting an oil outlet of the first oil storage tank with an oil-requiring position in the compressor by using a pipeline, connecting the tail end of a pumpback pipeline into an air suction section of the compressor, and connecting the tail end of an oil inlet pipe to an oil separator of the compressor; the second oil storage tank is filled with refrigeration oil, and the first oil storage tank is empty
Step 200, presetting oil storage: the control module controls the first control valve to be opened, so that the oil stored in the second oil storage tank automatically flows into the first oil storage tank under the action of gravity, the inflow amount is a system preset value, and the preset oil storage amount is controlled through the flow detector;
step 300, starting the compressor: in the step 200, the oil storage amount in the first oil storage tank is known, the control module judges the current operation working condition of the compressor through the suction and exhaust pressure of the compressor detected by the pressure sensor in real time, and obtains the oil demand of the current compressor after comparing the working condition with the stored data, and finally, the oil amount between the first oil storage tank and the second oil storage tank is adjusted by controlling the opening and closing of the first control valve, so that the oil amount of the first oil storage tank is maintained at the oil amount required by each working condition of the compressor;
step 400, increasing oil quantity: when the working condition of the compressor is switched from a small oil quantity demand working condition A to a large oil quantity demand working condition B, the control module controls the first control valve to be opened, and the oil quantity in the second oil storage tank flows into the first oil storage tank under the action of gravity; a flow detector on the first control valve synchronously detects the flow of oil flowing into the first oil storage tank, and when the flow of the oil reaches the difference value between the working condition A and the working condition B, the first control valve is closed;
step 500, oil volume reduction: when the working condition of the compressor is switched from a large oil quantity demand working condition B to a small oil quantity demand working condition A, the control module controls the second control valve to be closed, the first control valve and the third control valve to be opened, the pressure in the second oil storage tank is suction pressure, the pressure in the first oil storage tank is discharge pressure, and the refrigerant oil in the first oil storage tank is pumped back to the second oil storage tank due to the action of differential pressure; the flow detector on the first control valve synchronously detects the flow of the oil pumped back into the second oil storage tank, when the oil flow reaches the difference value between the working condition A and the working condition B, the third control valve and the first control valve are closed, and the second control valve is opened;
step 600, shutdown preparation: before the compressor is stopped, the control module controls the second control valve to be closed, the first control valve and the third control valve to be opened, all the refrigerating oil in the first oil storage tank is pressed back to the second oil storage tank, and the first control valve and the third control valve are closed.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the oil storage device with the plurality of oil storage tanks is arranged, one of the oil storage devices is connected with the compressor and used for providing the refrigerating oil for the compressor, and the oil storage in the other oil storage tanks is adjusted in real time according to the running state of the compressor, so that the oil storage quantity in the oil storage tank connected with the compressor is always kept at the oil demand quantity under the running working condition of the compressor, the problem that the oil storage quantity in the oil storage tank is too much and is taken away by exhaust stirring is avoided, the too much refrigerating oil does not participate in the oil circulation of the whole unit, and the pressure of the oil separator is not increased.
In the further improvement scheme of the invention, two oil storage tanks, namely a first oil storage tank and a second oil storage tank are arranged on the compressor, the first oil storage tank is used as a common oil storage tank, the second oil storage tank is used as a standby oil storage tank, and the amount of the refrigerant oil in the common oil storage tank is always kept at the actual oil demand of the compressor through the oil amount regulation of the two oil storage tanks; secondly, the oil mass of storing in the reserve oil storage tank is more than the highest oil storage capacity of compressor operation in-process demand, when maintaining the unit and meet abominable operating mode, the many oil mass demands of compressor in the unit adjustment period.
In the further improvement scheme of the invention, the scheme that the common oil storage tank is arranged on the casting to heat the refrigeration oil through the oil heater in the prior art is changed, the second oil storage tank is not arranged on the compressor casting, the oil heater is arranged on the second oil storage tank, and before the compressor is started, the oil heating element can be firstly opened to heat the oil stored in the second oil storage tank and then flows into the first oil storage tank for the compressor to use, so that the problem of low efficiency of the oil heater for heating the casting in the prior art is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic view of the structure of the compressor of the present invention.
FIG. 1, a first oil reservoir; 2. a second oil reservoir; 3. an oil separator; 4. a first control valve; 5. a second control valve; 6. and a third control valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
The invention provides an oil storage device, which comprises at least one oil storage tank, a control module, an oil supply channel connected between two adjacent oil storage tanks, and a state detection assembly arranged on oil demand equipment, wherein the control module is internally stored with operation data and oil demand data of the oil demand equipment under different working conditions; the state detection assembly is in signal connection with the control module, and the control module controls the connection or disconnection of the oil supply channel according to state information provided by the state detection assembly so as to ensure that the oil storage amount in an oil storage tank directly connected with the oil demand equipment is equal to the oil demand of the oil demand equipment all the time.
As shown in fig. 1, as an embodiment of the present invention, the number of the oil storage tanks is two, which are a first oil storage tank 1 and a second oil storage tank 2, the control module is disposed in the first oil storage tank 1, and the first oil storage tank 1 is connected to an oil demand device, in this embodiment, the oil demand device is a compressor, a first control valve 4 is disposed on an oil supply path communicated between the first oil storage tank 1 and the second oil storage tank 2, and the control module can control the first control valve 4 to open or close, so as to ensure that the oil storage amount in the first oil storage tank 1 is equal to the oil demand amount of the compressor.
The control module is implemented by programming using prior art products.
In order to ensure the precision of the adjustment, the first control valve 4 is provided with a flow rate detection meter. In the process of adjusting the flow, the flow detector can detect the amount of the flowing freezing oil so as to ensure that the amount of the freezing oil flowing into or out of the first oil storage tank 1 meets the requirement.
In order to make the equipment more economical, environment-friendly and energy-saving, a height difference exists between the second oil storage tank 2 and the first oil storage tank 1, and the installation position of the second oil storage tank 2 is higher than that of the first oil storage tank 1. With the structure design, the refrigeration oil in the second oil storage tank 2 can automatically flow into the first oil storage tank 1 under the action of gravity; the second oil reservoir 2 may be attached to the compressor or may be attached to a position other than the compressor.
In order to expand the application range of the device, a pumpback component capable of pumpback the oil stored in the first oil storage tank 1 into the second oil storage tank 2 is arranged on the second oil storage tank 2, the pumpback component comprises a pumpback pipeline, a pumpback power source arranged at the tail end of the pumpback pipeline and a third control valve 6 arranged on the pumpback pipeline, and the control module is electrically connected with the third control valve 6 to control the communication or interruption of the pumpback pipeline. In an embodiment of the present invention, the end of the pumping-back pipeline is connected to the air suction section of the compressor, the pumping-back power source is the air suction section of the compressor, and the air suction section can provide negative pressure suction for the second oil storage tank 2 through the pumping-back pipeline.
Further, still be provided with the oil feed subassembly on the second oil storage tank 2, the oil feed subassembly is including advancing oil pipe and second control valve 5, control module and 5 electric connection of second control valve. The tail end of the oil inlet pipe is connected to an oil separator of the compressor, the exhaust gas of the exhaust section of the compressor is discharged into the oil separator, and the refrigeration oil brought out by the exhaust gas enters the second oil storage tank 2 through the oil inlet pipe after being separated in the oil separator.
In order to guarantee that the compressor can stably operate under the severe working condition, the maximum oil storage amount of the second oil storage tank 2 is larger than the maximum refrigerating oil demand of the compressor, and the oil storage amount of the first oil storage tank 1 is not larger than the oil storage amount of the second oil storage tank 2.
In order to heat the refrigeration oil and to facilitate the stable operation of the compressor in winter, the second oil storage tank 2 is provided with a heating element for heating the oil storage. Here, the heating element is an oil heater. Of course, other heating elements may be used as long as the refrigeration oil can be heated.
Further, the state detection assembly comprises a pressure sensor for detecting the suction and discharge pressure of the compressor. The pressure sensor transmits the data of the suction pressure and the exhaust pressure of the compressor to the control module, and the control module compares the stored data according to the transmitted data to judge the running state of the compressor.
The invention provides a compressor, which comprises a compressor body and an oil separator 3 connected with an exhaust section of the compressor body, wherein two ends of an oil storage device are respectively connected with the compressor body and the oil separator 3.
Specifically, the compressor is a screw compressor.
The invention provides an oil supply amount adjusting method for adjusting the oil amount of a compressor provided with an oil storage device, which comprises the following steps:
step 100, preparation: connecting an oil outlet of the first oil storage tank with an oil-requiring position in the compressor by using a pipeline, connecting the tail end of a pumpback pipeline into an air suction section of the compressor, and connecting the tail end of an oil inlet pipe to an oil separator of the compressor; the second oil storage tank is filled with refrigeration oil, and the first oil storage tank is empty
Step 200, presetting oil storage: the control module controls the first control valve to be opened, so that the oil stored in the second oil storage tank automatically flows into the first oil storage tank under the action of gravity, the inflow amount is a system preset value, and the preset oil storage amount is controlled through the flow detector; the state before the compressor is started is that the first oil storage tank is empty and the second oil storage tank is full; before the compressor is started, the second oil storage tank can supply a fixed oil quantity to the first oil storage tank, the oil quantity in the first oil storage tank is in a known state from the beginning, the subsequent inflow and outflow oil quantities are all related to the working condition, and the oil quantity is controllable;
step 300, starting the compressor: in the step 200, the oil storage amount in the first oil storage tank is known, the control module judges the current operation working condition of the compressor through the suction and exhaust pressure of the compressor detected by the pressure sensor in real time, and obtains the oil demand of the current compressor after comparing the working condition with the stored data, and finally, the oil amount between the first oil storage tank and the second oil storage tank is adjusted by controlling the opening and closing of the first control valve, so that the oil amount of the first oil storage tank is maintained at the oil amount required by each working condition of the compressor;
step 400, increasing oil quantity: when the working condition of the compressor is switched from a small oil quantity demand working condition A to a large oil quantity demand working condition B, the control module controls the first control valve to be opened, and the oil quantity in the second oil storage tank flows into the first oil storage tank under the action of gravity; a flow detector on the first control valve synchronously detects the flow of oil flowing into the first oil storage tank, and when the flow of the oil reaches the difference value between the working condition A and the working condition B, the first control valve is closed;
step 500, oil volume reduction: when the working condition of the compressor is switched from a large oil quantity demand working condition B to a small oil quantity demand working condition A, the control module controls the second control valve to be closed, the first control valve and the third control valve to be opened, the pressure in the second oil storage tank is suction pressure, the pressure in the first oil storage tank is discharge pressure, and the refrigerant oil in the first oil storage tank is pumped back to the second oil storage tank due to the action of differential pressure; the flow detector on the first control valve synchronously detects the flow of the oil pumped back into the second oil storage tank, when the oil flow reaches the difference value between the working condition A and the working condition B, the third control valve and the first control valve are closed, and the second control valve is opened; when the working condition is switched to A, more refrigerating oil in the system returns to the second oil storage tank through the second control valve, so that the refrigerating oil quantity of the compressor is kept unchanged;
step 600, shutdown preparation: before the compressor is stopped, the control module controls the second control valve to be closed, the first control valve and the third control valve to be opened, all the refrigerating oil in the first oil storage tank is pressed back to the second oil storage tank, and the first control valve and the third control valve are closed.
According to the invention, the oil storage device with the plurality of oil storage tanks is arranged, one of the oil storage devices is connected with the compressor and used for providing the refrigerating oil for the compressor, and the oil storage in the other oil storage tanks is adjusted in real time according to the running state of the compressor, so that the oil storage quantity in the oil storage tank connected with the compressor is always kept at the oil demand quantity under the running working condition of the compressor, the problem that the oil storage quantity in the oil storage tank is too much and is taken away by exhaust stirring is avoided, the too much refrigerating oil does not participate in the oil circulation of the whole unit, and the pressure of the oil separator is not increased.
In the further improvement scheme of the invention, two oil storage tanks, namely a first oil storage tank and a second oil storage tank are arranged on the compressor, the first oil storage tank is used as a common oil storage tank, the second oil storage tank is used as a standby oil storage tank, and the amount of the refrigerant oil in the common oil storage tank is always kept at the actual oil demand of the compressor through the oil amount regulation of the two oil storage tanks; secondly, the oil mass of storing in the reserve oil storage tank is more than the highest oil storage capacity of compressor operation in-process demand, when maintaining the unit and meet abominable operating mode, the many oil mass demands of compressor in the unit adjustment period.
In the further improvement scheme of the invention, the scheme that the common oil storage tank is arranged on the casting to heat the refrigeration oil through the oil heater in the prior art is changed, the second oil storage tank is not arranged on the compressor casting, the oil heater is arranged on the second oil storage tank, and before the compressor is started, the oil heating element can be firstly opened to heat the oil stored in the second oil storage tank and then flows into the first oil storage tank for the compressor to use, so that the problem of low efficiency of the oil heater for heating the casting in the prior art is solved.
It should be noted that "inward" is a direction toward the center of the accommodating space, and "outward" is a direction away from the center of the accommodating space.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in fig. 1 to facilitate the description of the invention and to simplify the description, but are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (11)
1. The oil storage device is characterized by comprising at least one oil storage tank, a control module, an oil supply channel connected between two adjacent oil storage tanks and a state detection assembly installed on oil demand equipment, wherein the control module stores operating data and oil demand data of the oil demand equipment under different working conditions; the state detection assembly is in signal connection with the control module, and the control module controls the connection or disconnection of the oil supply channel according to state information provided by the state detection assembly so as to ensure that the oil storage amount in one oil storage tank directly connected with the oil demand equipment is always equal to the oil demand of the oil demand equipment.
2. The oil storage device according to claim 1, wherein the number of the oil storage tanks is two, namely a first oil storage tank and a second oil storage tank, the control module is arranged in the first oil storage tank, the first oil storage tank is connected with an oil demand facility, a first control valve is arranged on the oil supply path communicated between the first oil storage tank and the second oil storage tank, and the control module can control the first control valve to be opened or closed so as to ensure that the oil storage amount in the first oil storage tank is equal to the oil demand of the oil demand facility.
3. The oil storage device according to claim 2, wherein a flow rate detector is provided on the first control valve.
4. The oil storage device according to claim 2, wherein there is a height difference between the second oil reservoir and the first oil reservoir, and the second oil reservoir is installed at a position higher than the first oil reservoir.
5. The oil storage device according to claim 2, 3 or 4, wherein a back-pumping assembly capable of pumping the oil stored in the first oil storage tank back into the second oil storage tank is arranged on the second oil storage tank, the back-pumping assembly comprises a back-pumping pipeline, a back-pumping power source arranged at the tail end of the back-pumping pipeline and a third control valve arranged on the back-pumping pipeline, and the control module is electrically connected with the third control valve to control the connection or the disconnection of the back-pumping pipeline.
6. The oil storage device of claim 5, wherein the second oil storage tank is further provided with an oil inlet assembly, the oil inlet assembly comprises an oil inlet pipe and a second control valve, and the control module is electrically connected with the second control valve.
7. An oil storage device according to claim 2, characterized in that the maximum oil capacity of the second oil reservoir is greater than the maximum demand of the oil demand equipment, and the oil capacity of the first oil reservoir is not greater than the oil capacity of the second oil reservoir.
8. An oil storage device according to claim 2, characterized in that the second oil reservoir is provided with a heating element for heating the oil reservoir.
9. The oil storage device of claim 1, wherein the condition detection assembly comprises a pressure sensor for detecting suction and discharge pressures of an oil requiring device.
10. A compressor comprising a compressor body and an oil separator connected to a discharge section of the compressor body, wherein both ends of the oil storage device according to any one of claims 1 to 9 are connected to the compressor body and the oil separator, respectively.
11. A method for adjusting an amount of oil supply to a compressor equipped with an oil storage device as claimed in any one of claims 1 to 9, comprising the steps of:
step 100, preparation: connecting an oil outlet of the first oil storage tank with an oil-requiring position in the compressor by using a pipeline, connecting the tail end of a pumpback pipeline into an air suction section of the compressor, and connecting the tail end of an oil inlet pipe to an oil separator of the compressor; the second oil storage tank is filled with refrigeration oil, and the first oil storage tank is empty
Step 200, presetting oil storage: the control module controls the first control valve to be opened, so that the oil stored in the second oil storage tank automatically flows into the first oil storage tank under the action of gravity, the inflow amount is a system preset value, and the preset oil storage amount is controlled through the flow detector;
step 300, starting the compressor: in the step 200, the oil storage amount in the first oil storage tank is known, the control module judges the current operation working condition of the compressor through the suction and exhaust pressure of the compressor detected by the pressure sensor in real time, and obtains the oil demand of the current compressor after comparing the working condition with the stored data, and finally, the oil amount between the first oil storage tank and the second oil storage tank is adjusted by controlling the opening and closing of the first control valve, so that the oil amount of the first oil storage tank is maintained at the oil amount required by each working condition of the compressor;
step 400, increasing oil quantity: when the working condition of the compressor is switched from a small oil quantity demand working condition A to a large oil quantity demand working condition B, the control module controls the first control valve to be opened, and the oil quantity in the second oil storage tank flows into the first oil storage tank under the action of gravity; a flow detector on the first control valve synchronously detects the flow of oil flowing into the first oil storage tank, and when the flow of the oil reaches the difference value between the working condition A and the working condition B, the first control valve is closed;
step 500, oil volume reduction: when the working condition of the compressor is switched from a large oil quantity demand working condition B to a small oil quantity demand working condition A, the control module controls the second control valve to be closed, the first control valve and the third control valve to be opened, the pressure in the second oil storage tank is suction pressure, the pressure in the first oil storage tank is discharge pressure, and the refrigerant oil in the first oil storage tank is pumped back to the second oil storage tank due to the action of differential pressure; the flow detector on the first control valve synchronously detects the flow of the oil pumped back into the second oil storage tank, when the oil flow reaches the difference value between the working condition A and the working condition B, the third control valve and the first control valve are closed, and the second control valve is opened;
step 600, shutdown preparation: before the compressor is stopped, the control module controls the second control valve to be closed, the first control valve and the third control valve to be opened, all the refrigerating oil in the first oil storage tank is pressed back to the second oil storage tank, and the first control valve and the third control valve are closed.
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| CN201911000281.XA CN110821788B (en) | 2019-10-21 | 2019-10-21 | Oil storage device, compressor comprising same and oil supply quantity adjusting method |
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| CN201911000281.XA CN110821788B (en) | 2019-10-21 | 2019-10-21 | Oil storage device, compressor comprising same and oil supply quantity adjusting method |
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| CN110821788B (en) | 2023-09-29 |
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