A screw water chiller oil circuit adaptive lubrication system

Abstract

The utility model discloses a screw water chiller oil circuit self -adaptation lubricating system relates to screw water chiller technical field, including screw water chiller body, oil tank and frequency conversion oil pump, the back of screw water chasser body is linked together with oil tank through pipeline, and the screw water chasser body is passed through one side and is connected with the adjusting cooling assembly. The utility model discloses through setting up adjusting cooling assembly cooperation detection conveying assembly to screw water chasser body and the lubricating oil flowing of frequency conversion oil pump are detected and are adjusted, has solved the lack of closed -loop regulation mechanism of current water chiller oil circuit system, leads to lubricating oil temperature control unit to be unable to realize dynamic compensation, is difficult to keep oil viscosity steady in the rated operating condition range, influences oil film formation quality and friction pair lubricating efficiency, and long -term operation can cause the abnormal wear and tear risk of key motion component to rise, reduced the problem of screw water chiller use effect, reached the effect of detection adjustment.

Description

Technical Field

[0001] This utility model relates to the technical field of screw chiller units, specifically to an adaptive lubrication system for screw chiller units. Background Technology

[0002] In screw chillers, the oil circuit refers to the path through which lubricating oil circulates within the unit and the system comprised of related components. The mixture of high-temperature, high-pressure refrigerant gas discharged from the compressor and lubricating oil first enters the oil separator. In the oil separator, the lubricating oil is separated from the gas mixture through centrifugal force, gravity settling, and filtration. The separated lubricating oil collects at the bottom of the oil separator and then flows from the oil separator to the variable frequency oil pump by gravity or the suction of the variable frequency oil pump. The variable frequency oil pump pressurizes the lubricating oil and delivers it to various parts of the unit that require lubrication through oil pipes. These parts include the compressor bearings, the meshing parts of the screw rotor, and shaft seals. The lubricating oil forms an oil film in these parts, which reduces friction, lowers wear, cools, and seals.

[0003] For example, a chiller oil cooling device disclosed in CN219511060U includes a base, a chiller fixedly installed on the left side of the top of the base, and a housing fixedly connected to the right side of the top of the base. A bent pipe is fixedly connected to the middle of the left end of the inner cavity of the housing, and a connecting block is fixedly connected to the right end of the bent pipe. This invention, by setting up a bent pipe, metal plates, fins, and a fan, allows lubricating oil in the chiller's internal oil circuit to enter the interior of the bent pipe through the oil inlet pipe. At this time, the metal plates and fins absorb the heat of the lubricating oil, thereby reducing its temperature. When the fan runs, it draws gas through the air inlet pipe and then discharges it into the interior of the housing through the exhaust pipe. The blown gas can quickly dissipate heat from the metal plates and fins, thus cooling the lubricating oil and preventing its lifespan from being affected by high temperatures.

[0004] Based on the search of patent numbers, and combined with the shortcomings of existing technologies, the following findings were made;

[0005] The existing oil circuit system of the chiller unit lacks a closed-loop regulation mechanism, which makes it impossible for the lubricating oil temperature control unit to achieve dynamic compensation. This makes it difficult to stabilize the oil viscosity within the rated operating range, affecting the quality of oil film formation and the lubrication efficiency of friction pairs. Long-term operation may lead to an increased risk of abnormal wear of key moving parts, reducing the performance of the screw chiller unit. Utility Model Content

[0006] To address the problems mentioned in the background art, the purpose of this utility model is to provide an adaptive lubrication system for screw chiller oil circuits. This system has the advantages of detection and adjustment, solving the problem that existing chiller oil circuit systems lack a closed-loop adjustment mechanism, resulting in the lubricating oil temperature control unit being unable to achieve dynamic compensation, making it difficult to stabilize the oil viscosity within the rated operating range, affecting the quality of oil film formation and the lubrication efficiency of friction pairs, and potentially increasing the risk of abnormal wear of key moving parts during long-term operation, thus reducing the performance of screw chillers.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an adaptive lubrication system for a screw chiller, comprising a screw chiller body, an oil tank, and a variable frequency oil pump. The back of the screw chiller body is connected to the oil tank via a pipe. A cooling adjustment component is connected to one side of the screw chiller body. A detection and conveying component is connected to the output end of the variable frequency oil pump.

[0008] In a preferred embodiment of this invention, the cooling adjustment assembly includes a connecting pipe, a first temperature sensor is installed inside the connecting pipe, the other end of the connecting pipe is connected to a cooling regulator, the suction end of the variable frequency oil pump is connected to a fixed pipe, the other end of the fixed pipe is connected to the cooling regulator, and a second temperature sensor is connected inside the fixed pipe.

[0009] As a preferred embodiment of this utility model, the detection and conveying assembly includes a movable tube, a pressure sensor is installed inside the movable tube, the other end of the movable tube is connected to one side of the screw chiller unit body, a controller is installed on the front of the screw chiller unit body, and the controller is electrically connected to a first temperature sensor, a cooling regulator, a second temperature sensor and a pressure sensor via wires.

[0010] As a preferred embodiment of this invention, a liquid level sensor is installed inside the oil tank, and the liquid level sensor is electrically connected to the controller via a wire.

[0011] In a preferred embodiment of this invention, the controller is electrically connected to a remote controller via a wire. The remote controller is installed on the front of the screw chiller unit body. The controller is electrically connected to an LED light via a wire. The LED light is installed on the front of the screw chiller unit body.

[0012] As a preferred embodiment of this invention, a differential pressure alarm filter is installed inside the connecting pipe, and the differential pressure alarm filter is electrically connected to the controller via a wire.

[0013] As a preferred embodiment of this invention, a heat insulation ring is installed on the surface of the fixed tube, and a heat insulation ring is installed on the surface of the movable tube.

[0014] As a preferred embodiment of this utility model, a protective box is provided on the outside of the variable frequency oil pump, a support plate is installed at the bottom of the protective box, the bottom of the screw chiller body is installed on one side of the top of the support plate, and the bottom of the cooling regulator is installed on the top of the support plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. This utility model uses a cooling adjustment component in conjunction with a detection and conveying component to detect and adjust the lubricating oil flowing in the screw chiller body and the variable frequency oil pump. This solves the problem that the existing chiller oil circuit system lacks a closed-loop adjustment mechanism, which leads to the lubricating oil temperature control unit being unable to achieve dynamic compensation, making it difficult to stabilize the oil viscosity within the rated operating range, affecting the oil film formation quality and friction pair lubrication efficiency. Long-term operation may lead to an increased risk of abnormal wear of key moving parts, reducing the performance of the screw chiller. This invention achieves the effect of detection and adjustment.

[0017] 2. This utility model, by setting up a cooling adjustment component, can efficiently regulate the temperature of lubricating oil. The first temperature sensor inside the connecting pipe collects the temperature of the lubricating oil in real time before it enters the cooling regulator. The cooling regulator adjusts the flow rate of the cooling medium according to the temperature information to cool the lubricating oil in a targeted manner. The cooled lubricating oil is then transported through a fixed pipe, and the second temperature sensor inside the pipe detects the oil temperature again, forming a closed-loop feedback to ensure that the output lubricating oil temperature is stable within a suitable range, providing a stable lubrication and cooling environment for all components of the unit.

[0018] 3. This utility model, by setting up a detection and delivery component, can monitor the pressure status of the lubricating oil in real time. The pressure sensor in the moving tube detects the pressure of the lubricating oil during the delivery process in real time and transmits the pressure data to the controller. When the pressure is abnormal, the controller can issue an alarm in time or adjust the working status of the variable frequency oil pump to ensure that the lubricating oil is delivered stably and evenly to each lubrication point in the system, avoid the problem of poor lubrication caused by unstable oil pressure, and ensure that each friction pair is always in a good lubrication state. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the three-dimensional disassembled structure of this utility model;

[0021] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0022] In the diagram: 1. Screw chiller unit body; 2. Oil tank; 3. Variable frequency oil pump; 4. Cooling adjustment assembly; 41. Connecting pipe; 42. First temperature sensor; 43. Cooling regulator; 44. Fixed pipe; 45. Second temperature sensor; 5. Detection and conveying assembly; 51. Moving pipe; 52. Pressure sensor; 53. Controller; 6. Liquid level sensor; 7. Remote controller; 8. LED light; 9. Differential pressure alarm filter; 10. Insulation ring; 11. Heat insulation ring; 12. Protective box; 13. Support plate. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figures 1 to 3 As shown, the present invention provides an adaptive lubrication system for a screw chiller, including a screw chiller body 1, an oil tank 2, and a variable frequency oil pump 3. The back of the screw chiller body 1 is connected to the oil tank 2 through a pipe, and a cooling adjustment component 4 is connected to one side of the screw chiller body 1. The output end of the variable frequency oil pump 3 is connected to a detection and conveying component 5.

[0025] refer to Figure 3 The cooling adjustment component 4 includes a connecting pipe 41, a first temperature sensor 42 installed inside the connecting pipe 41, and a cooling regulator 43 connected to the other end of the connecting pipe 41. The suction end of the variable frequency oil pump 3 is connected to a fixed pipe 44, the other end of the fixed pipe 44 is connected to the cooling regulator 43, and a second temperature sensor 45 is connected inside the fixed pipe 44.

[0026] As a technical optimization of this utility model, by setting up the regulating cooling component 4, the temperature of the lubricating oil can be efficiently regulated. The first temperature sensor 42 in the connecting pipe 41 collects the temperature of the lubricating oil in real time before entering the cooling regulator 43. The cooling regulator 43 adjusts the flow rate of the cooling medium according to the temperature information to cool the lubricating oil in a targeted manner. The cooled lubricating oil is then transported through the fixed pipe 44. The second temperature sensor 45 in the pipe detects the oil temperature again, forming a closed-loop feedback to ensure that the output lubricating oil temperature is stable within a suitable range, providing a stable lubrication and cooling environment for all components of the unit.

[0027] refer to Figure 3The detection and conveying assembly 5 includes a movable tube 51, and a pressure sensor 52 is installed inside the movable tube 51. The other end of the movable tube 51 is connected to one side of the screw chiller unit body 1. A controller 53 is installed on the front of the screw chiller unit body 1. The controller 53 is electrically connected to the first temperature sensor 42, the cooling regulator 43, the second temperature sensor 45 and the pressure sensor 52 through wires.

[0028] As a technical optimization of this utility model, by setting up the detection and delivery component 5, the pressure status of the lubricating oil can be monitored in real time. The pressure sensor 52 in the movable tube 51 detects the pressure during the lubricating oil delivery process in real time and transmits the pressure data to the controller 53. When the pressure is abnormal, the controller 53 can issue an alarm in time or adjust the working state of the variable frequency oil pump 3 to ensure that the lubricating oil is stably and evenly delivered to each lubrication point in the system, avoid the problem of poor lubrication caused by unstable oil pressure, and ensure that each friction pair is always in a good lubrication state.

[0029] refer to Figure 2 The oil tank 2 is equipped with a liquid level sensor 6, which is electrically connected to the controller 53 via a wire.

[0030] As a technical optimization of this utility model, by setting a liquid level sensor 6, the liquid level of the lubricating oil in the oil tank 2 can be monitored in real time. The liquid level sensor 6 feeds back the liquid level information to the controller 53 in real time. When the liquid level is too low, the controller 53 can issue an alarm to remind the staff to replenish the lubricating oil in time to avoid wear of the unit components due to lack of oil. When the liquid level is too high, the abnormality can also be detected in time to prevent the normal operation of the unit from being affected by the oil level problem, thus ensuring the continuous and stable operation of the lubrication system.

[0031] refer to Figure 2 The controller 53 is electrically connected to the remote controller 7 via wires. The remote controller 7 is installed on the front of the screw chiller unit body 1. The controller 53 is electrically connected to the LED light 8 via wires. The LED light 8 is installed on the front of the screw chiller unit body 1.

[0032] As a technical optimization of this utility model, by setting up a remote controller 7 and LED lights 8, the remote monitoring and status indication functions of the equipment are realized. The staff can obtain the system's operating data in real time, such as oil temperature, oil pressure, and oil level, through the remote controller 7, which is far away from the unit. They can also remotely adjust some parameters, which improves the convenience and timeliness of operation. The LED lights 8 can intuitively display the operating status of the unit, such as normal operation and fault alarm, so that the on-site staff can quickly understand the equipment status and respond in a timely manner.

[0033] refer to Figure 2The differential pressure alarm filter 9 is installed inside the connecting pipe 41, and the differential pressure alarm filter 9 is electrically connected to the controller 53 through a wire.

[0034] As a technical optimization of this utility model, by setting a differential pressure alarm filter 9, the cleanliness of the lubricating oil is effectively guaranteed. When the differential pressure across the filter reaches the set value, it indicates that the filter is clogged. The differential pressure alarm filter 9 will send a signal to the controller 53 to remind the staff to replace the filter element in time. This can prevent impurities from entering the lubrication system, reduce the wear of impurities on the unit components, extend the service life of the unit, and ensure the normal operation of the lubrication system.

[0035] refer to Figure 3 A heat insulation ring 10 is installed on the surface of the fixed tube 44, and a heat insulation ring 11 is installed on the surface of the movable tube 51.

[0036] As a technical optimization of this utility model, by setting the insulation ring 10 and the heat insulation ring 11, heat loss and interference of the external environment on the lubricating oil temperature are reduced. The insulation ring 10 on the surface of the fixed pipe 44 can reduce the heat exchange between the lubricating oil in the pipe and the external environment, and maintain the relative stability of the lubricating oil temperature. The heat insulation ring 11 on the surface of the movable pipe 51 can prevent the heat loss of the lubricating oil during transportation, ensure that the temperature fluctuation of the lubricating oil is small during transportation, and improve the accuracy and stability of oil temperature control.

[0037] refer to Figure 3 A protective box 12 is provided on the outside of the variable frequency oil pump 3, and a support plate 13 is installed at the bottom of the protective box 12. The bottom of the screw chiller unit body 1 is installed on one side of the top of the support plate 13, and the bottom of the cooling regulator 43 is installed on the top of the support plate 13.

[0038] As a technical optimization of this utility model, the protective box 12 and the support plate 13 are set to protect the oil pump, prevent it from being affected by external collisions, dust and other factors, and extend the service life of the oil pump. The support plate 13 at the bottom of the protective box 12 provides a stable installation foundation for the screw chiller unit body 1 and the cooling regulator 43, ensuring the stability of the equipment during operation and reducing the adverse effects on the lubrication system caused by equipment shaking or displacement.

[0039] The working principle and usage process of this utility model are as follows: During operation of the screw chiller unit 1, the separated lubricating oil enters the connecting pipe 41. The first temperature sensor 42 inside the connecting pipe 41 monitors the oil temperature before it enters the cooling regulator 43 and transmits the data to the controller 53. The controller 53 then controls the cooling regulator 43 to adjust the flow rate of the cooling medium. The second temperature sensor 45 inside the fixed pipe 44 then feeds back the cooled oil temperature to the controller 53, forming a closed-loop regulation to precisely control the oil temperature. The pressure sensor 52 monitors the lubricating oil pressure in real time. When the pressure is abnormal, the controller 53 adjusts the output pressure of the variable frequency oil pump 3 to ensure stable delivery of lubricating oil to each lubrication point. The system includes a liquid level sensor 6 in the oil tank 2 to monitor the oil level, and a signal to the controller 53 when abnormal, triggering an alarm via LED light 8. A differential pressure alarm filter 9 in the connecting pipe 41 monitors the oil cleanliness, and an alarm to remind users to replace the filter element when clogged. Thermal insulation rings 11 on the fixed pipe 44 and the movable pipe 51 reduce heat loss from the lubricating oil and external interference. The remote controller 7 facilitates remote monitoring and operation. LED light 8 visually displays the unit status. The protective box 12 protects the variable frequency oil pump 3, and its bottom support plate 13 stably supports the unit body and cooling regulator 43, ensuring stable system operation and achieving the effect of detection and regulation, thus enhancing the performance of the screw chiller unit.

[0040] In summary, this adaptive lubrication system for screw chillers uses a cooling adjustment component 4 in conjunction with a detection and delivery component 5 to detect and regulate the lubricating oil flowing between the screw chiller body 1 and the variable frequency oil pump 3. This solves the problem that existing chiller oil circuit systems lack a closed-loop regulation mechanism, which prevents the lubricating oil temperature control unit from achieving dynamic compensation, making it difficult to stabilize the oil viscosity within the rated operating range. This affects the quality of oil film formation and the lubrication efficiency of friction pairs, and may lead to an increased risk of abnormal wear of key moving parts during long-term operation, thus reducing the performance of the screw chiller.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A screw water chiller oil circuit adaptive lubrication system, comprising a screw water chiller body (1), an oil tank (2) and a variable frequency oil pump (3), characterized in that: The back of the screw chiller unit body (1) is connected to the oil tank (2) through a pipe. The screw chiller unit body (1) is connected to a cooling adjustment component (4) on one side. The output end of the variable frequency oil pump (3) is connected to a detection and conveying component (5).

2. The adaptive lubrication system for a screw chiller unit according to claim 1, characterized in that: The cooling adjustment assembly (4) includes a connecting pipe (41), a first temperature sensor (42) is installed inside the connecting pipe (41), the other end of the connecting pipe (41) is connected to a cooling regulator (43), the suction end of the variable frequency oil pump (3) is connected to a fixed pipe (44), the other end of the fixed pipe (44) is connected to the cooling regulator (43), and the inside of the fixed pipe (44) is connected to a second temperature sensor (45).

3. A screw water chiller oil circuit self-adapting lubrication system according to claim 2, characterized in that: The detection and delivery assembly (5) includes a movable tube (51), inside which a pressure sensor (52) is installed. The other end of the movable tube (51) is connected to one side of the screw chiller unit body (1). A controller (53) is installed on the front of the screw chiller unit body (1). The controller (53) is electrically connected to the first temperature sensor (42), the cooling regulator (43), the second temperature sensor (45), and the pressure sensor (52) via wires.

4. A screw water chiller oil circuit self-adapting lubrication system according to claim 3, characterized in that: The oil tank (2) is equipped with a liquid level sensor (6), which is electrically connected to the controller (53) via a wire.

5. A screw chiller oil circuit self-adapting lubrication system according to claim 3, characterized in that: The controller (53) is electrically connected to a remote controller (7) via a wire. The remote controller (7) is installed on the front of the screw chiller unit body (1). The controller (53) is electrically connected to an LED light (8) via a wire. The LED light (8) is installed on the front of the screw chiller unit body (1).

6. A screw chiller oil circuit self-adapting lubrication system according to claim 3, characterized in that: The differential pressure alarm filter (9) is installed inside the connecting pipe (41), and the differential pressure alarm filter (9) is electrically connected to the controller (53) through a wire.

7. A screw chiller oil circuit self-adapting lubrication system according to claim 3, characterized in that: A heat insulation ring (10) is installed on the surface of the fixed tube (44), and a heat insulation ring (11) is installed on the surface of the movable tube (51).

8. A screw chiller oil circuit self-adapting lubrication system according to claim 2, characterized in that: The variable frequency oil pump (3) is provided with a protective box (12) on the outside, and a support plate (13) is installed at the bottom of the protective box (12). The bottom of the screw chiller unit body (1) is installed on one side of the top of the support plate (13), and the bottom of the cooling regulator (43) is installed on the top of the support plate (13).

Images