Online lubricating oil filling device for refrigeration compressor

Abstract

The online lubricating oil filling device of the refrigeration compressor comprises an oil storage barrel, a first plug valve, a second plug valve, a filter, a filling pump, a first pipeline, a second pipeline and an oil separator, wherein the oil separator is connected into the oil storage barrel through a first pipeline, a first plug valve and a second plug valve are sequentially arranged on the first pipeline, the first plug valve is close to the oil storage barrel, and the second plug valve is close to the oil separator; a filter and a charging pump are sequentially arranged on the second pipeline, the end, close to the filter, of the second pipeline extends into the oil storage barrel, and the end, close to the charging pump, of the second pipeline is connected to the first pipeline between the first plug valve and the second plug valve. Therefore, the pressure and the flow during the lubricating oil filling process of the refrigeration compressor in the operation process can be stabilized, and bubbles possibly generated in the filling process can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the field of machinery, in particular to an on-line lubricating oil filling device for a refrigeration compressor. Background Technique

[0002] A refrigeration compressor is a driven fluid mechanical device that raises low-pressure gas to high-pressure gas, playing a central role in a refrigeration system. Filling lubricating oil means injecting lubricating oil into the refrigeration system using physical or other methods, and shutdown maintenance refers to the device or equipment stopping running for maintenance and repair.

[0003] In the process of implementing the present utility model, it is found that in the existing main lubricating oil filling devices for refrigeration compressors, the oil storage barrel is directly connected to the pump, and the pump transports the lubricating oil to the refrigeration compressor through a pipeline. The filling speed is unstable, and air bubbles are likely to appear, affecting the filling effect. However, if a pressure stabilizing device is provided between the oil storage barrel and the pump, the output pressure of the lubricating oil can be stabilized, but the problems of unstable filling speed and air bubbles cannot be completely solved. In addition, in the existing lubricating oil filling devices for refrigeration compressors, a flow meter and a controller are provided on the pipeline. The flow meter monitors the flow rate of the lubricating oil in real time, and the controller controls the operating state of the pump according to the flow signal, stabilizing the filling speed to a certain extent, but it cannot be operated during the operation of the refrigeration system. Content of the Utility Model

[0004] In view of this, the embodiments of the present utility model provide an energy-saving rectification system, which can solve the technical problems that in the existing lubricating oil filling device for a refrigeration compressor, due to the high pressure during the operation of the refrigeration compressor, the lubricating oil can only be filled after the entire refrigeration system stops, seriously affecting the production and operation of enterprises, as well as the technical problems of inaccurate filling amount and unstable filling speed; in addition, it can effectively avoid a large amount of air and moisture in the air from entering the refrigeration system, causing ice blockage, ice plugging, and corrosion of equipment pipelines, etc., affecting the normal operation and generating air bubbles; at the same time, it can realize real-time monitoring and feedback mechanism of the output state of the lubricating oil, and timely discover and solve problems occurring during the lubricating oil filling process.

[0005] To achieve the above object, according to an embodiment of the present utility model, an on-line lubricating oil filling device for a refrigeration compressor is provided, including an oil storage barrel, a first stop valve, a second stop valve, a filter, a filling pump, a first pipeline, a second pipeline, and an oil separator; wherein, the oil separator is connected to the inside of the oil storage barrel through the first pipeline, and the first stop valve and the second stop valve are sequentially arranged on the first pipeline. The first stop valve is close to the oil storage barrel, and the second stop valve is close to the oil separator; a filter and a filling pump are sequentially arranged on the second pipeline, and one end of the second pipeline close to the filter extends below the oil level of the oil storage barrel, and one end of the second pipeline close to the filling pump is connected to the first pipeline between the first stop valve and the second stop valve.

[0006] Optionally, it includes: a check-type quick connector; wherein, a check-type quick connector is installed on the first pipeline between the oil separator and the second stop valve.

[0007] Optionally, it includes a liquid level gauge; wherein, the liquid level gauge is installed at the upper end of the oil storage barrel.

[0008] Optionally, it includes: a flow sensor and a controller; wherein, a flow sensor is arranged on the second pipeline, and the flow sensor is connected to the controller, and the controller is connected to the filling pump.

[0009] Optionally, it includes: a liquid level sensor and an alarm; wherein, the liquid level sensor is arranged at the liquid level in the oil storage barrel, and the liquid level sensor is connected to the alarm.

[0010] Optionally, it includes: taking the oil storage barrel, the first pipeline, and the second pipeline as a group, and multiple groups are connected in parallel and then connected to the filling pump and the oil separator.

[0011] One embodiment of the above utility model has the following advantages or beneficial effects: The online lubricating oil filling device for a refrigeration compressor provided by the present utility model can stabilize the pressure and flow rate during the filling of lubricating oil when the refrigeration compressor is running, effectively avoid the bubbles that may be generated during the filling process, and operate under the condition that the refrigeration system does not stop, realizing the stable operation of the refrigeration system. In addition, it can monitor the lubricating oil flow rate in real time, control the filling speed stably, and improve the filling effect.

[0012] The further effects of the above non-conventional optional methods will be described below in combination with specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings are used to better understand the present utility model and do not constitute an improper limitation to the present utility model. Among them:

[0014] Figure 1 is a schematic structural diagram of an online lubricating oil filling device for a refrigeration compressor according to an embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The following describes exemplary embodiments of the present utility model with reference to the drawings. Various details of the embodiments of the present utility model are included to facilitate understanding, and they should be considered merely exemplary. Therefore, those of ordinary skill in the art should recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present utility model. Similarly, for the sake of clarity and conciseness, descriptions of well-known functions and structures are omitted below.

[0016] At least one embodiment of the present utility model provides an online lubricating oil filling device for a refrigeration compressor, asFigure 1 As shown in the figure, the on-line lubricating oil filling device for a refrigeration compressor may include an oil storage barrel 1, a first stop valve 3, a second stop valve 4, a filter 7, a filling pump 6, a first pipeline 9, a second pipeline 10, and an oil separator 8. In an embodiment, the oil separator 8 is connected to the inside of the oil storage barrel 1 through the first pipeline 9, and the first stop valve 3 and the second stop valve 4 are sequentially arranged on the first pipeline 9. The first stop valve 3 is close to the oil storage barrel 1, and the second stop valve 4 is close to the oil separator 8. A filter 7 and a filling pump 6 are sequentially arranged on the second pipeline 10. One end of the second pipeline 10 close to the filter 7 extends below the oil surface of the oil storage barrel 1, and one end of the second pipeline 10 close to the filling pump 6 is connected to the first pipeline 9 between the first stop valve 3 and the second stop valve 4. That is to say, the liquid in the oil storage barrel 1 circulates through the second pipeline 10, the filter 7, the filling pump 6, the first stop valve 3, and the first pipeline 9 to discharge the air bubbles in the pipeline and the liquid. Then, the second stop valve 4 is opened, and the first stop valve 3 is closed, and the liquid in the oil storage barrel 1 enters the oil separator 8.

[0017] Exemplary: The oil storage tank 1 used by the manufacturer to store the lubricating oil of the refrigerating machine for easy transportation, through the filling pump 6 that provides power for filling the lubricating oil, conveys the lubricating oil passing through the filter 7 that can filter the impurities contained in the lubricating oil in the oil storage barrel to the first pipeline 9, and then conveys it to the oil separator 8.

[0018] Therefore, the on-line lubricating oil filling device for the refrigeration compressor of the present invention can stabilize the pressure and flow rate during the lubricating oil filling process of the refrigeration compressor during operation, and effectively avoid the air bubbles that may be generated during the filling process.

[0019] In some embodiments worthy of note, the on-line lubricating oil filling device for the refrigeration compressor may be provided with a flow sensor on the second pipeline 10, and the flow sensor is connected to a controller, and the controller is connected to the filling pump 6.

[0020] Exemplary, the filling pump 6 pumps out the lubricating oil from the oil storage barrel 1 and conveys it to the oil separator 8 through the second pipeline 10. The flow sensor is arranged on the second pipeline 10 to real-time monitor the flow rate of the lubricating oil conveyed to the refrigeration compressor and feedback the flow signal to the controller. The controller controls the operating state of the filling pump 6 according to the flow signal (such as on, off, open wide, open small, etc.). For example, the controller may be a switch valve that can be adjusted in size, so as to realize the stable control of the filling speed and avoid the generation of air bubbles.

[0021] In a further embodiment, the present invention may adopt a PLC controller or an embedded controller, which can control the operating state of the filling pump according to the received flow signal, so as to realize the stable control of the filling speed.

[0022] Another embodiment of the present utility model is that the refrigerant compressor lubricating oil filling device may further include a liquid level sensor and an alarm. The liquid level sensor is arranged at the liquid level in the oil storage barrel, and the liquid level sensor is connected with an alarm. The liquid level sensor is used to monitor the state of the lubricating oil transported to the refrigerant compressor. When the amount of lubricating oil transported to the refrigerant compressor is lower than or higher than the set value, the alarm gives an alarm.

[0023] Furthermore, it may further include a display screen for displaying parameters such as the state of the lubricating oil transported to the refrigerant compressor and the filling speed. For example, the display screen is connected to the flow sensor and the liquid level sensor, receives the transmitted signals and displays them, and can observe the operation situation in real time.

[0024] As some other embodiments of the present utility model, as Figure 1 shown, the on-line lubricating oil filling device for the refrigerant compressor includes a check-type quick connector 5. A check-type quick connector 5 is installed on the first pipeline 9 between the oil separator 8 and the second stopcock valve 4, which can be quickly connected and prevent the reverse flow of lubricating oil.

[0025] As a preferred embodiment of the present utility model, the on-line lubricating oil filling device for the refrigerant compressor may further include a portable liquid level gauge 2 installed at the upper end of the oil storage barrel, which can detect the level of the oil in the oil storage tank.

[0026] In still some other embodiments of the present utility model, according to the actual on-site working conditions, the quantity of the lubricating oil and the user's requirements, the on-line lubricating oil filling device for the refrigerant compressor can be adopted in a parallel multi-group manner, and the number of multiple groups can be adjusted, so as to improve the filling efficiency. In the embodiment, there are multiple groups of oil storage barrels, first stopcock valves, second stopcock valves, filters, filling pumps, and oil separators in parallel.

[0027] It should be noted that the present utility model can be specifically aimed at wet refrigerant compressors, and can also be applicable to other compressors. At the same time, the pipeline layout and valve configuration of the present utility model can be adjusted according to the user's requirements.

[0028] Moreover, unless otherwise clearly specified and defined, the contents such as "installation", "connection", and "coupling" can be fixedly connected, detachably connected, or integrally connected. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0029] The above specific implementation manners do not constitute a limitation to the protection scope of the present utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can occur depending on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An on-line lubricating oil filling device for a refrigeration compressor, characterized in that, It includes an oil storage barrel, a first stopcock valve, a second stopcock valve, a filter, a filling pump, a first pipeline, a second pipeline and an oil separator; Among them, the oil separator is connected to the inside of the oil storage barrel through the first pipeline, and the first stopcock valve and the second stopcock valve are sequentially arranged on the first pipeline. The first stopcock valve is close to the oil storage barrel, and the second stopcock valve is close to the oil separator; A filter and a filling pump are sequentially arranged on the second pipeline. One end of the second pipeline close to the filter extends below the oil level in the oil storage barrel, and one end of the second pipeline close to the filling pump is connected to the first pipeline between the first stopcock valve and the second stopcock valve.

2. The online lubricating oil filling device for a refrigeration compressor according to claim 1, characterized in that, It includes a check-type quick connector; Among them, a check-type quick connector is installed on the first pipeline between the oil separator and the second stopcock valve.

3. The on-line lubricating oil filling device for a refrigeration compressor according to claim 1, wherein, It includes: A liquid level gauge; Among them, the liquid level gauge is installed at the upper end of the oil storage barrel.

4. The on-line lubricating oil filling device for a refrigeration compressor according to claim 1, characterized in that, It includes: A flow sensor and a controller; Among them, a flow sensor is arranged on the second pipeline, the flow sensor is connected to the controller, and the controller is connected to the filling pump.

5. The on-line lubricating oil filling device for a refrigeration compressor according to claim 1, characterized in that, It includes: A liquid level sensor and an alarm; Among them, the liquid level sensor is arranged at the liquid level in the oil storage barrel, and the liquid level sensor is connected to an alarm.

6. The on-line lubricating oil filling device for a refrigeration compressor according to any one of claims 1-5, characterized in that, It includes taking the oil storage barrel, the first pipeline and the second pipeline as a group, and multiple groups are connected in parallel and then connected to the filling pump and the oil separator.

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